9400M vs ATI HD 4670

I will be using CS3, Editing videos, a game or 2 on windows XP Pro ( Say, Grand Theft Auto ).
I'm definitely going to replace my Aging Late 2006 iMac. Will the 9400M Suffice or is the ATI HD 4760 really that much worth it.
I'm thinking of getting the midrange 21.5" model @ 3.06Ghz.
Or
the Mid Range Mac Mini @ 2.53Ghz which only comes in the 9400m.

Definitely the ATI. It's only $50 more, isn't it? Your CPU will thank you.

Similar Messages

  • ATI Raedon 4670 Support

    Does anyone know if the ATI Raedon 4670 is supported on the Mac Pro. Are there any drivers available, supported or not÷

    No. Only the ATI 3870 Mac/PC Edition is supported along with the three cards provided from Apple. No other video cards have the required EFI boot ROM needed for OS X.
    Other third-party cards may be installed additionally but can only be used for Windows.

  • 7640 Media Center No audio after installing ATI HD 4670

    I tried a video card upgrade, I was running  ATI 1950, purchased an  ATI HD4670 so I could make use of HDMI input on my new monitor and improve performance.
    I uninstalled the existing drivers and followed the install info for the 4670. The card appeared to configure correctly and video function was great BUT i had no sound from either front or back outputs. In audio hardware set up I could no longer see Realtek HD only the ATI HD Audio as a choice. I did install teh full Catlyst Control Center version 9.1.1.
    Any help greatly appreciated :-)

    Hi,
    Mjr_Havoc wrote:
    I tried a video card upgrade, I was running  ATI 1950, purchased an  ATI HD4670 so I could make use of HDMI input on my new monitor and improve performance.
    I uninstalled the existing drivers and followed the install info for the 4670. The card appeared to configure correctly and video function was great BUT i had no sound from either front or back outputs. In audio hardware set up I could no longer see Realtek HD only the ATI HD Audio as a choice. I did install teh full Catlyst Control Center version 9.1.1.
    Any help greatly appreciated :-)
    Install the latest ATI drivers, the Microsoft drivers should load by themselves. Install Realtek ATI HDMI drivers (Google "ATI HDMI Audio Device" ). 
    Install "ac3filter" (get it from a google search). Restart your PC after that. In ac3filter Main Tab check "Use SPDIF" and choose 5.1 audio out. In the SPDIF Tab choose the formats your Surround Sound can decode (DTS, AC3, PCM 24bit) . 
    Turn on your receiver. In the Audio control panel choose Realtek HDMI Output as Default, choose Properties, click Supported Formats Tab and verify which formats will play (disable "Microsoft WMA Pro Audio" ) and do the same in Advanced (choose 24bit). Now 5.1 surround should work. 
    regards,
    erico 
    Message Edited by erico on 11-20-2009 09:04 PM
    ****Please click on Accept As Solution if a suggestion solves your problem. It helps others facing the same problem to find a solution easily****
    2015 Microsoft MVP - Windows Experience Consumer

  • Full HD with ATI HD 4670

    I have a HD 4670. My requirement is to have 1920×1080 hd resolution (16:9) up and running. I don't care about compiz or whatever.
    I have tried both open source drivers (ati and radeonhd). According to xrandr none of them seems to be able to display full hd. Is it right ?
    I have ended up installing catalyst and catalyst-utils. I think these packages end up downloading twice the ATI driver from the ATI web site. Does it make sense ?
    A part from this, it works nicely. except that the screen sometimes flicks on the above right side of the screen. This is specially obvious when I have a blank screen (whatever the color is). And it is a real pain.
    FY: I am using the latest catalyst version : 9.8.1 with the arch kernel 2.6.30.  Direct rendering works fine according to "glxinfo | grep direct". Following the wiki, I have generated a xorg with aticonfig and did not bother modifying it. I am using xmonad.
    Despite the excellent ATI wiki entry, I have found it rather difficult to understand how to get a proper ATI driver working to support full hd. For instance,  I am not sure if both ati and radeonhd are supposed to handle it or not.
    I have been reading many of the catalyst comments but it is not always easy to make sense of them. Is there a dedicated help page for catalyst and catalyst-utils. I realise that the install procedure is kind of changing at each version and it is probably a real pain to offer a decent support here.
    Is there any obvious check I could try ? Is the future brighter with kernel 2.6.31 ?
    So this is just a cry for help. In any case, it should be viewed as a critics toward Arch, the Aur package or whatever. On the contrary thanks so much for your work.
    PS I have duplicated this post realizing it was probably harder to search for info in the huge ATI Bar & grill post. Sorry for the inconvenience.

    Hey PierreR,
    I agree with you the ATI wiki is difficult to understand, more over there is a interesting but equally incomprehensible mega post ATI Bar & Grill.  I have Dell XPS 1640 with Radeon Mobility 4670.
    I (like Andrwe) recommend the xf86-video-radeonhd-git.  But and interesting in getting 3d acc to work for Kwin or Compiz woteva any help with that would be great.
    But I here is copy of my xorg.conf with 1080p working modify and enjoy I hope
    ection "ServerLayout"                   
            Identifier     "X.org Configured"
            Screen      0  "Screen0" 0 0     
            InputDevice    "Mouse0" "CorePointer"
            InputDevice    "Keyboard0" "CoreKeyboard"
    EndSection                                       
    Section "Files"
            ModulePath   "/usr/lib/xorg/modules"
            FontPath     "/usr/share/fonts/misc"
            FontPath     "/usr/share/fonts/100dpi:unscaled"
            FontPath     "/usr/share/fonts/75dpi:unscaled"
            FontPath     "/usr/share/fonts/TTF"           
            FontPath     "/usr/share/fonts/Type1"         
    EndSection                                             
    Section "Module"
            Load  "dri2"
            Load  "dbe"
            Load  "dri"
            Load  "extmod"
            Load  "record"                                                                                                                                                     
            Load  "glx"                                                                                                                                                         
    EndSection                                                                                                                                                                 
    Section "InputDevice"                                                                                                                                                       
            Identifier  "Keyboard0"                                                                                                                                             
            Driver      "kbd"                                                                                                                                                   
    EndSection                                                                                                                                                                 
    Section "InputDevice"                                                                                                                                                       
            Identifier  "Mouse0"                                                                                                                                               
            Driver      "mouse"                                                                                                                                                 
            Option      "Protocol" "auto"                                                                                                                                       
            Option      "Device" "/dev/input/mice"                                                                                                                             
            Option      "ZAxisMapping" "4 5 6 7"                                                                                                                               
    EndSection                                                                                                                                                                 
    Section "Monitor"
            Identifier   "Monitor0"
            VendorName   "Monitor Vendor"
            ModelName    "Monitor Model"
    EndSection                           
    Section "Device"
            ### Available Driver options are:-
            ### Values: <i>: integer, <f>: float, <bool>: "True"/"False",
            ### <string>: "String", <freq>: "<f> Hz/kHz/MHz"             
            ### [arg]: arg optional                                     
            #Option     "NoAccel"                   # [<bool>]           
            #Option     "AccelMethod"               # [<str>]           
            #Option     "offscreensize"             # [<str>]           
            #Option     "SWcursor"                  # [<bool>]           
            #Option     "ignoreconnector"           # [<str>]           
            #Option     "forcereduced"              # [<bool>]           
            #Option     "forcedpi"                  # <i>               
            #Option     "useconfiguredmonitor"      # [<bool>]           
            #Option     "HPD"                       # <str>             
            #Option     "NoRandr"                   # [<bool>]           
            #Option     "RROutputOrder"             # [<str>]           
            #Option     "DRI"                       # [<bool>]           
            #Option     "TVMode"                    # [<str>]           
            #Option     "ScaleType"                 # [<str>]           
            #Option     "UseAtomBIOS"               # [<bool>]           
            #Option     "AtomBIOS"                  # [<str>]           
            #Option     "UnverifiedFeatures"        # [<bool>]           
            #Option     "Audio"                     # [<bool>]           
            #Option     "HDMI"                      # [<str>]           
            #Option     "COHERENT"                  # [<str>]
            #Option     "ForceLowPowerMode"         # [<bool>]
            #Option     "LowPowerModeEngineClock"   # <i>
            Identifier  "Card0"
            Driver      "radeonhd"
            VendorName  "ATI Technologies Inc"
            BoardName   "Unknown Board"
            BusID       "PCI:1:0:0"
    EndSection
    Section "Screen"
            Identifier "Screen0"
            Device     "Card0"
            Monitor    "Monitor0"
            SubSection "Display"
                    Viewport   0 0
                    Depth     1
            EndSubSection
            SubSection "Display"
                    Viewport   0 0
                    Depth     4
            EndSubSection
            SubSection "Display"
                    Viewport   0 0
                    Depth     8
            EndSubSection
            SubSection "Display"
                    Viewport   0 0
                    Depth     15
            EndSubSection
            SubSection "Display"
                    Viewport   0 0
                    Depth     16
            EndSubSection
            SubSection "Display"
                    Viewport   0 0
                    Depth     24
            EndSubSection
    EndSection
    This was just made with Xorg -configure, so good luck let me know how you go ?
    Mac
    Last edited by Mac Tzu (2009-09-07 12:49:59)

  • MOVED: Fan Control on ATI HD 4670 Mobility on MSI GX 623 laptop

    This topic has been moved to MSI Notebook.
    https://forum-en.msi.com/index.php?topic=138890.0

    Hi flyby99,
    The VGA module on the laptop does not have a dedicated fan like a regular video card does therefore you don't see a fan control for it.
    The fan is controlled by main BIOS and its speed varies depending by system temperature. There's no way to change its speed, thank you.

  • Is it possible to upgrade the grapic card from ATI 4670 to ATI 4850

    Hello,
    i bought a 27inch iMac with an ATI Radeon 4670 grapic chip. At the moment the peformance in Games is enough for me. But for the upcoming PC-Games like Diablo 3 or Starcraft 2, i need a better grapic chip.
    So is it possible afterwards to upgrade the 4670 to 4850? It must be a MXM Standard. From there it should not be a problem or?
    I hope someone can answer my question.
    Sorry for my bad english
    W. Jacob

    Hi-
    Unfortunately, it is both brutally difficult and (of course) warranty voiding to attempt such a thing.
    If you are adventurous, take a trip to ifixit.com to get an idea of the difficulity for swapping out the daughterboard graphics chip.
    The only way to squeeze the most performance out of your iMac for gaming is to install 64 bit windows 7 via bootcamp, and max out with 16gb ram. Not much you can do besides that.
    Message was edited by: kguy

  • Compositing causes screen tearing with Nvidia, is ATI a better choice?

    So far, every Nvidia card I've used with Ubuntu, Debian and Arch has had intolerable screen tearing with a compositing manager running, while watching any video. I've installed the proprietary driver from Nvidia on a Debian machine but the screen tearing is still there. The cards I've been using are an 8600GT and a 9600GT.
    I've tried xcompmgr, Xfce compositing and Gnome compositing all of which seem to cause the same symptoms.
    It seems like I read somewhere that there's a problem with the Nvidia compositing extension or something like that...
    Two questions...
    1) Do ATI cards tear video with compositing enabled? (I'm hoping they don't...)
    2) Is there any way to cure screen tearing with an nvidia card and compositing enabled?
    Last edited by captainmurphie (2010-02-22 07:30:57)

    ATI Radeon 4670 user here, KDE w/ Arch Linux. While I can't speak for other video cards, this particular card runs absolutely fine using xf86-video-ati and some xorg.conf tweaks. Though I don't play many games, I can tell you Alice runs fine via WINE. As far as OpenGL goes, the screen savers that are supposedly OpenGL work fine, too.
    The only performance difference between this card and the 7600GS I was using beforehand that I can tell (minus the speed improvement) is being forced to view videos using the Xvideo driver in KMPlayer. If I view said videos via OpenGL, they display, however widgets on the desktop tend to offer display glitches while the video is ongoing.
    I understand there's a good deal of reason for the commenting, and yes, ATI drivers aren't nearly up to par with their Nvidia counterparts, however this doesn't mean some folks aren't having success with the available driver(s) using little effort on their parts. As an ATI user, it'd be nice to see some fellow reports of success with ATI drivers, open source or not.

  • Which 21.5 iMac to buy???

    I am going to buy a new iMac today. My choices are the $1199 or the $1499 version. I really don't care that much about the larger hard drive in the $1499 version. My question is whether I would get much benefit out of the ATI Radeon card. For the most part, I am not a gamer. The only game I run with any frequentcy is Flight Simulator. I probably will be running FS with Win7 and Bootcamp. Will the base NVIDIA card do a good job with FS? I notice that the higher end video card says HD. What's that about?
    The $300 difference doesn't mean that much to me, but on the other hand, if I'm not going to get much benefit out of it, I would rather spend the $300 on beer and pleasure.
    NVIDIA GeForce 9400M graphics
    ATI Radeon HD 4670 256MB
    Thanks for any input in helping me make this decision.

    Roger - Thanks. I'm leaning towards your recommendation to go with the 3.06ghz Core Duo and buy the 4GB RAM upgrade for about $90 from OWC.
    Right now I use FSX on a 3-4 year old Toshiba laptop with an integrated graphics card and a 1.6ghz processor. I know I will see some dramatic improvements with the new iMac. I have loaded Windows 7 beta on my MacBook Pro and tried FSX on that -- works pretty well. I need to see if I can get Windows 7 through my daughter in college for $29 before the beta runs out -- not sure if that $29 deal is a full version or an upgrade. I've never bought Windows for any Mac so I need to find a full version (not upgrade).
    Thanks again for your input.

  • Difference between new graphic cards?

    can anyone tell me if there is a big difference between the NVIDIA GeForce 9400M and ATI Radeon HD 4670 with 256MB graphics card?
    I am about to get an imac for my wife. It will be our home computer but she will be using it for World of Warcraft as well. I play on a new macbook and I was just wondering if there is a huge difference in each card.
    Thanks for any help

    Yes. There is a significant difference between those two options. THe NVIDIA 9400M has good performance for the low-end option, but it does not have dedicated VRAM. It uses 256mb of system RAM for that purpose, often called integrated or shared memory. The ATI Radeon HD 4670 has 256mb of dedicated VRAM. That's not the only difference, but for graphically intensives uses, such as WoW and other similar games, the ATI Radeon HD 4670 would provide better performance.
    However, a MacBook (not "Pro") also uses the NVIDIA 9400M. Therefore, if performance is acceptable for doing the same things the iMac will do, then the iMac with NVIDIA 9400M should be fine as well, since it is the same graphics processor paired with a faster CPU.

  • CS4 is Constantly disabling GPU enhancements

    Each time I open CS4 and the initial image I get this message, "Photoshop has encountered a problem with the display driver, and has temporarily disabled GPU enhancements. Check the video card manufacturer's website for the latest software."
    I'm writing to the Adobe Forum because GeForce feels they are not the cause of the problem. Here is what I've done toward resolving this problem:
    As a side note let me add here that after upgrading CS2 to CS4 this error message appeared religiously. That caused me to purchased an Nvidia GeForce 9600 GT display adapter w/ 512mb memory. Prior to installing the new card I downloaded their newest drivers for this card after removing the old drivers. Originally I had a GeForce 7600 card. The error message continued with the new card. I've searched the settings within CS4 trying to find an option that would resolve the problem. This machine has a new motherboard, a D945GNT Intel board. It will support 64-bit however I'm currently running XP Pro 32-bit, SP3. It also has a new Pentium D dual core processor. I have 4 GB of RAM.
    Have I overlooked a setting in the CS4 program that will resolve the issue? The graphics are slow to regenerate if you move in or out. Bridge is slow to generate all images in folders. As I view the tutorials on the Net I see normal regens where mine are slow. And last but certainly not least, other programs are slow to open. I've done several virus scans and turned up nothing. I've run chkdsk /r on all of my drives. I've run defrag on all my drives as well as Disk Cleanup.
    I've got a copy of Vista Ultimate heading my way. I'm prepared to wipe the c-drive and begin over. Do you think my problems will go away after the new operating system in installed or is this my second bad 9600 GT video card?

    Folks,
    I tested several older and newer cards with the new CS4 enhancements on Win XP SP3 workstations. Here my lowdown (or 2 cents):
    Issues on all cards, no matter what:
    -All cards did have the one issue when displaying an image on a 2nd monitor: Background showing through. Just maximize the image window and the problem is gone. This happens to all my 6 video cards, no matter what driver, brand or GPU!
    How to avoid the "GPU Message" and reduce drawing issues:
    Here two cards that deliver a pretty decent price/performance (nothing is perfect, really). Key: The DEVIL IS IN THE GPU SETTINGS DETAILS! With these settings, we had a good performance with brushes, clone/healing, zooming and NO MORE GPU MESSAGE:
    NVidia GeForce 8600 - 512MB
    Use the following settings, and the error messages are gone:
    -Vertical Sync: Yes
    -3D Interaction: Blank/Disabled
    -Force Bilinear Interpolation: No
    -Advanced Drawing: Yes
    -Use for Image Display: Yes
    -Color Matching: Yes
    ATI Radeon 4670 - 1GB
    -Vertical Sync: No
    -3D Interaction: Blank/Disabled
    -Force Bilinear Interpolation: No
    -Advanced Drawing: Yes
    -Use fro Image Display: No
    -Color Matching: Yes
    I really believe that you will encounter issues no matter what brand, type or age of GPU you're using. The Trick is to find the perfect GL settings for your card. Based on my research, the OS seems to have no impact.
    Hope this helps,
    Cheers,
    Bruno

  • Problem Playing Video in Premiere Pro CS4

    I am having a problem playing video in premiere pro. When I input any movie clip and try to play it in both the timeline and in the preview mode, the audio works fine but the video only plays a few seconds worth of footage at a really slow pace so that it takes up the entire time. For instance if I load a 3 minute video, the sound is normal but over the coarse of that 3 minutes I will only see a small number of the frames and they are cycled through in ultra slow motion.
    All the clips play normally outside of premiere. I have uninstalled and reinstalled the program. I have premiere installed on my laptop and it works fine. I have tried rendering the video first and it still doesn't work. I have tried holding shift before the program is loading and it did nothing. I have downloaded all the updates too. Videos seem to play fine in After Effects.
    Also, I am having trouble when importing HD video into premiere and after effects. For some reason the programs freeze when I try to import footage from my Creative Vado HD pocket video camera.
    Here are my computer specs
    Windows Vista Ultimate 32 Bit
    Intel Core2 Quad q8200
    ATI Radeon 4670 Graphics Card
    Gigabyte Motherboard
    4GB of 800 Mhz RAM
    This is really frustrating. Any help would be greatly appreciated

    Keith,
    The file extension .AVI indicate a "wrapper." All sorts of stuff can be in that wrapper *. Some of that stuff will play/edit fine. Much will not and create issues, as you have seen. Your camera uses a CODEC to create those .AVI files. That CODEC is the issue. I recommend G-Spot to find out what the CODEC is. Some times it's just a matter of having the proper CODEC installed on the computer. Most of the time, it takes much more than that - hence Eddie's links on "conversion." At least G-Spot will get us all on the same playing field, and explicit help can follow - probably to study Eddie's links. My guess is that your camera uses some form of DivX CODEC, hence the problem that you see.
    Good luck,
    Hunt
    * Think of .AVI like the foil wrapper on a stick of gum, when you remove the outer lable. You know it's gum, but not what flavor. Could be Juicyfruit, or Spearmint, or Double-mint. G-Spot will tell you the flavor. PrPro likes some flavors, but hates others.

  • DVI Signal Not Working Properly in Hp 2010i Monitor

    Hi Team,
     My Name is Rubhan and i Purchased a Hp2010i 20" LCD Monitor 3 weeks back. I just installed an ATI Radeon 4670 HD Graphics Card in my System which comes with a DVI Port(Default), Since there was no DVI Cables Supplied by the Manufacturer, i had to Buy a Seperate Cable and Install it to the system.... At first, the monitor went to sleep since there was no Signal from Graphics Card, but later on, after a minute Windows screen appeared and didn't last for more than few Seconds and Vanished again(this happens every time wen i restart or kept System in Idle)... I doubted Both the Graphics card and Cable to be at fault and Checked it in my Old Computer System. But Both the devices were Performing Normal and good. I checked the entire CPU with another LG LCD Monitor and Found it Working Great....I admite that my Monitor is Working great without Graphics card in VGA, But  I wud like to Know Reason or solution to this issue. I m happy that there is Direct DVI i/p option in Hp Monitor(which other Brands doesnt posses) and therefore no DVI-VGA Coverters required.

    The only thing I can think of right now would be drivers.
    Make sure you have the latest ATI drive for the 4670, here is a link to AMD's website.
    http://sites.amd.com/us/game/downloads/Pages/radeo​n_win7-64.aspx
    good luck.
    bill
    I'm a HP employee

  • Windows 7 Boot Camp resolution capped at 1280x1024

    I have installed Windows 7 on my late 2009 21.5" iMac, using the bootcamp Assistant (v5.1.2) packed with Mavericks (OSX 10.9.5). The installation went smoothly, however my Windows screen resolution cannot go any higher than 1280x1024, and I would obviously like to use my full 1920x1080 iMac screen!
    I installed the BootCamp support drivers off my OSX installation disk, and have updated everything i possibly can, through windows updates and also downloading the latest BootCamp support drivers for windows from the Apple site.
    The ATI Catalyst Control Centre that was installed as part of the latest ATI support drivers for bootcamp, will also not let me raise my resolution any higher than 1280x1024. I have tried selecting a refresh rate of 59Hz rather than 60, and have also tried the "show all modes" option in Device manager when I have selected the ATI Radeon 4670, but there were no resolutions available higher than the above stated.
    ANY suggestions would be greatly appreciated...

    ATI driver version is 8.723.3.0
    And yes, I initially installed the bootcamp support drivers off my Snow Leopard installation disk. Like I said, when those didn't work, I tried the newer ones:
    iMac Late 2009 Windows 7 Drivers

  • Which Mac should we buy?

    Hi,
    We are in the market for a new Mac and don't live near an Apple store. Trying to decide between a new Mac Mini or iMac.
    Here is the main use,
    Short videos in High Definition. We record using a Sony HDR-FX7 in 1080i and edit down to about 1 minute to 1 minute 20 seconds. This short video is then sent to iDVD and burned, as well we then transcode to mp4 and flash for web.
    We have been using iMovie 6 HD on a dual G4 and while it wasn't the fastest in the world, because the videos are relatively small, it works, mostly. I say mostly because the system crashes often, iMovie 6 crashes often etc.
    Time for a new system! iMovie 9 isn't really what we are after so we have decided to go for FCE 4. Now we just have to decide on the new hardware.
    The new Mac Mini is intriguing, but is it really powerful enough to handle FCE4? I would think it is because apparently we can run FCE 4 on our G4... Should we look at an iMac? We already have two very nice monitors and external firewire drives. Would the entry level iMac be a better solution?
    Anyone out there have any experiences they would like to share with either the mini or iMac and FCE4?
    Cheers!
    Chris

    Hello, and welcome to the Apple Discussion forums!
    Regarding the Mac mini vs. iMac if you intend to use FCE, there's hardly any question in my mind ... go with an iMac!
    • The integrated video processor in the Mac mini is not ideal for FCE.
    • If you configure a Mac mini as closely as possible to a basic iMac (4GB RAM, 2.6GHz processor, 500GB hard drive, keyboard & mouse), they are +within $52 of each other+ ... and you +still need a display!+
    • The iMac has features no mini can match in any configuration - 3.06GHz i3 processor, discrete ATI Radeo 4670 video processor, LED display
    • The iMac is more powerful and will yield better performance over a longer life than a mini will.
    Or you might consider a refurbed 21" Core i3 iMac ... which you can purchase for +even less+ than an upgraded Mac mini! I have a number of refurbed Macs and they are all flawless.

  • IMac high pitch sound (4th iMac in a week). Any improvements?

    Hello,
    I know there is a lot of forum posts on the internet about this, as I've spent about two days reading them (primarily from my iPhone as my screen sound drives me up the wall).
    As some people have experienced, this is a result of changing the brightness (0% and 100% are fine, anything in between emits a high pitched whine...some people believe this is a result of the capacitors vibrating at around 15-16Hz, which would make sense).
    I have actually gone through four separate iMacs in a week to try to fix this problem (and two being upgrades over the model I had in hopes of a different production run). I have checked the serial number on all of them and they were all build between September and October, at various weeks between, mostly within a 4 week window.
    I am beyond my wits with this issue and not sure what to do now. I have spent nearly 20 hours setting up four separate computers only to format them to take back in a chance I am lucky enough to get one that I can dim at night time without getting a ringing sound in my ear.
    I was wondering if anyone else who has experienced this issue has come across a solution, or at least a replacement that has worked? I am debating to go for number five, but honestly, I am almost too tired of boxing and driving, boxing and drive (rinse and repeat). (I even tried three separate stores in hopes to get a different production week that didn't have this issue).
    Looking forward to your responses, and any guidance. I love this machine and I wish it just stopped having these issues so I could do some work...
    Setup(s):
    First two:
    21.5" iMac 3.06GHz Intel Core i3
    4GB RAM
    500GB HDD
    ATI Radeon 4670
    Next two:
    21.5" iMac 3.2GHz Intel Core i3
    4GB RAM
    1TB HDD
    ATI Radeon 5670
    Thank you,
    Adam

    I started having this problem yesterday on my late 2009 iMac 27 inch after I changed my HDD.
    It was perfectly fine before however after the swap however after a high pitch noise occurred when I increased the display brightness. So Just this morning I pulled my iMac apart again and unplugged the screen again and had a look at the connectors. all were fine except for the Vertical Sync ribbon
    The 4 flat wires/ribbons that are exposed on the end are supposed to be glued to the thin piece of plastic that plugs into the socket on the circuit board. This circuit board is on the top left hand corner of the iMac as well which is where people say the sound is coming from.
    I am not sure if this will solve all the problems out there but its worth a look.
    Follow this link to the ifixit guide to see what I mean (Look at Step 5)
    http://www.ifixit.com/Guide/iMac+Intel+27-Inch+EMC+2309+and+2374+Hard+Drive+Repl acement/1634

Maybe you are looking for