IMac 20" refresh rates question

How do I find out what refresh rates are supported on my iMac 20" Core Duo? I don't see anything in system profiler and or the display preferences.

Also, are there any versions of ATI Catalyst drivers made for the Radeon X1600's that come in these?

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27" iMac Monitor "refresh rate"

Hello!
I'm considering buying a 27" iMac but there's 1 more thing that I need to know before doing so.
Before you go ahead and tell me that refresh rates on a CRT and LCD monitor are not the same: I'm aware of that. LCD screens still have a similar thing, though, refreshing the entire image. Let's call it fps as I've no clue to what it's actually called.
Since it'll be used, mostly, for FPS games I want a screen who's able to pull off at least 100fps (like 100Hz in the old days) at various lower resolutions. Do you know if the iMac's screen able to do this, and if you do, do you know the various rates for different resolutions?
Nicolai

Is it less than two weeks old? Check if your store has a replacement policy?
Is it less than a year old? Check with the local authorized service centers if you feel you have done nothing that could have possibly damaged the machine, as this would be a hardware issue.
Is it under AppleCare? Same thing.
If it isn't expect to pay more than just adding an external display. If you are in the U.S. http://www.dttservice.com/ is a good company to check out for under non-AppleCare replacement costs. Mid-2011 should still be under AppleCare unless you bought it really early on. May 3rd was when it came out in the stores, so you probably are still under the 1 year coverage, but better hurry, unless you registered it with Apple early. At minimum buy AppleCare so you are covered for an additional 2 years if you haven't already, since it is showing signs of possible wear not normal to be seen.

24" iMac refresh rate

I am having all those horrible problem with battlefield 2142 that everyone else is having, but i just found the file that has all the configurations for the game, such as the screen resolutions. My normal resolution is at 1920x1200, but the game resolution is stuck at 1024x800 @ 60hz. i tried to enter the larger resolutions including 1920x1200 but the game just crashes. SO thinking about it i think i have the wrong refresh rate. i went through system preferences and at the refresh rate says "n/a" as seen here....
!http://farm2.static.flickr.com/1165/1427575277e25330d756o.jpg!
i also checked system profiler... nothing....
!http://farm2.static.flickr.com/1237/1428482292a9cb9b3555o.jpg!
that being said does anyone know the refresh rates for the reolutions of the 24" iMac?
the help would be greatly appreciated by many including myself x100....

Roger Wilmut1 wrote:
I suspect that 'refresh rate' is only applicable to CRT monitors: my flat-panel iMac has it greyed out as well.
Not sure if the lack of refresh rate selection is normal for an iMac, but I can defnitely select the refresh for my 17" LCD monitor.
It seems more likely that the game simply won't work at higher than 1024x800 - particularly as 1920x1200 is a widescreen format and the game very likely wants a 4x3 format. Try setting your monitor to 1024x768
Some games will refuse to run at resolutions lower than 1024x768 or 800x600, but I've never heard of a game that would refuse to be set at a higher resolution…

Satellite U200 - questions about screen refresh rate

Sattellite U200-148 WINXPHOMESP2
Video adapter Mobile Intel (R) 945GM Express Chipset Family
Volume of video of memory 128
Problem Accelerated Graphics Port - it is inaccessible
Frequency of hertz the screen 60
Questions
1) Accelerated Graphics Port - there is enabled if yes that that it is necessary to make that it became accessible.
2) whether Frequency of hertz with 60 can be raised even up to 75.

Hi
I have noticed that on some Toshiba notebooks the screen refresh rate is fixed on 60 Hz.
The display refresh rate is not important on the notebook screens.
TFT matrix doesn't have such thing as refresh rate. It doesn't blink.
TFT like all other LCD screens doesn't have refresh rate parameter, only reaction time.
Your eyes are safe ;)
Ps: As far as I know the AGP port is not available.

IMac refresh rate

Does anyone know the refresh rate of the new iMac? The reason I am asking is low refresh rates sometimes gives me a headache and I can't seem to find this info any where on apple's site. I have a feeling I am not looking in the right section but I'm not totally sure.
Thanks,
Tony

There is NO Refresh Rate on LCD screens. That number is for the times per second the Scanning Guns of a CRT monitor redraws the screen, usually in the 60 to 75 (also could be as high as 85) times a second the screen is scanned/redrawn.
You can see that if you take a picture at a fast shutter speed of a CRT TV or computer monitor as part of the screen will be black or dark.
With a LCD screen it is redrawn all at the same time and is basically continuous.
If you are getting headaches from LCD screens then there is something wrong with the screen or your head.
Although with the new LED backlit screens it does pulsate the LEDs as they are One brightness, constant, and the way they lower the screen brightness is to turn the LED lights on and off at different rates to simulate a dimmer screen brightness.
There is a Long thread on this on this forum.

Refresh rate on iMac

I'm not really sure if this is the right place for this post, so forgive me.
I am wondering why the refresh rate on my iMac (latest generation, Intel, 20in) says n/a for the refresh rate. I would very much like to know what the refresh rate is, and if thats impossible, why is it impossible?

Ammendment to my previous post: the going out of focus is not a random thing at all . I've just noticed when it happens: it seems like my screen is cut into 4 halves depending on the mouse position...
Let me explain: when my mouse pointer is in the lower half of the screen, the image is all clear. When it goes to the upper half, the image goes slightly out of focus, mainly noticeable on text (very slight so that it's annoying, but one can still read it). That's for the "2 first halves".
Now when the pointer of the mouse is in the left half of the screen, the image shifts sideways by less than a millimeter. Not much, but noticeable enough to be annoying. And when the pointer is in the other half, it goes back to where it was initially.
Has anyone else encountered this problem?
Cheers,
N

Re: NEW GT72 2QE Dominator Pro and question on refresh rate

When i go into screen resolution > advanced settings > monitor
I also tried to overclock in the nvidia console to 75hz, tested it, noticed the screen was shaking + unfocused, then refertd back to 60hz

Quote from: steeptofall on Today at 16:10:24I've been trying to figure out why my gsync enabled screen is only outputting 60hz refresh rate when I'm reading in multiple places about a driver that lets you select 7...

The refresh rate for Mac mini 2014 at 3840x2160 using Thunderbolt

Here: http://www.apple.com/mac-mini/specs/
, it says that the refresh rate for resolution 3840x2160 for HDMI is 30 Hz.
I'm wondering if it's the same using Thunderbolt, or more correctly DisplayPort.
Thanks!

MacMagnus wrote:
Ok, thanks!
If I could ask another question regarding this... is 30 Hz poor even for desktop work? Or movies.
I believe the 30Hz is progressive and therefore for movies/video would normally look quite good. However for sports e.g. soccer which has a fast moving object i.e. the ball it would be less good. I have also seen comments suggesting that for computer use it is also less desirable particularly when you are scrolling as this entails affectively the entire screen image 'moving fast'.
This is not based on personal use as I cannot afford a 4K screen yet myself. However for DVDs 24p is considered a to give a good image for movies and this I can confirm from personal experience so 30p should be even better. Obviously 60p is better still but for that you need either a Mac Pro, iMac or MacBook Pro Retina.
It is probably going to depend on what you will be using it for. Perhaps you should consider spending a little more for a MacBook Pro Retina which can do 60 Hz.
See Using 4K displays and Ultra HD TVs with Mac computers - Apple Support

Quicktime Video on an LCD Projector Problems & Refresh Rate?

I'm having an issue and don't have a lot of experience with this but hopefully someone has some insight.
When i play back video (formats including DV, DV50, HDV, PRORES422 / interlaced or progressive / frame rates of 23.98 or 29.97) in full screen using Quicktime Player (version 7.4.5) and Present (Shift CMD F) to a projector, the video plays and looks good, with the exception of during certain portions of the video (generally, with a lot of motion), i see either a flicker or what appears to be a scan line, tear, or a trace that scrolls vertically up the image. The flickering/trace is consistent with regard to a particular portion of the video, though when i adjust the refresh rate for the projector, the behavior of the flicker or scrolling trace changes (say at 60hz, it scrolls slowly up vs 85hz where i see mostly flickering/tearing of the image or multiple traces scrolling up). I've tried 3 different projectors, and every combination of screen resolution and refresh rate with no success.
I should point out that when i play these videos full screen on a cinema display (20in or 23in) i don't see this behavior at all.
So, i have a few specific questions:
1. Is anyone familiar with this behavior and any solutions?
2. The projector is connected with a VGA cable and DVI adapter. Might a DVI cable resolve the issue? Is the behavior a result of the analog input? (The cinema displays are connected via DVI and don't exhibit the behavior)
3. If it is a projector issue, any recommendations on a good projector for presenting video played back from a computer?
Thanks in advance for your help. If i've posted in the incorrect forum, please do direct me to the right place.
Shane

Just a fast reply... something to think about...
Use 60hz, most lcd are 60hz. Check you resolution specs for the projector. If the native resolution is 800x600 use that setting if higher use that.....
If your using the lcd as a secondary display try setting the main display to the same specs. Sometime a mismatch between the two displays can cause problems.
Go with the lcd spec settings that's the main priority and the main display isn't.

Refresh rate going to 60Hz when leaving fullscreen games

i am using nvidia blob drivers on a single monitor setup - they're working fine except that often (always?) when i am leaving openGL fullscreen game, the refresh rate defaults to 60 (from 75 Hz). anyone knows how to fix this? thanks, jose

R00KIE wrote:Your card seems to support dvi, your monitor supports dvi and a dvi cable should have come with it. Any reason why you're not using the dvi interface?
this is actually a very good question. i used to have this connected via vga because of second monitor on dvi in my past multiheaded setup but now that i got rid of it.. i completely forgot about using vga. i switched to dvi now and i think the situation is now better - will need to test a few games though. this is how xrandr output looks now:
$ xrandr
xrandr: Failed to get size of gamma for output default
Screen 0: minimum 320 x 175, current 1280 x 1024, maximum 1280 x 1024
default connected 1280x1024+0+0 0mm x 0mm
1280x1024 50.0* 51.0
1280x960 52.0
1152x864 53.0
1024x768 54.0 55.0 56.0 57.0 58.0 59.0
960x720 60.0
928x696 61.0
896x672 62.0 63.0
832x624 64.0
800x600 65.0 66.0 67.0 68.0 69.0 70.0 71.0 72.0 73.0 74.0
720x400 75.0
700x525 76.0 77.0
640x512 78.0 79.0 80.0
640x480 81.0 82.0 83.0 84.0 85.0 86.0 87.0 88.0
640x400 89.0
640x350 90.0
576x432 91.0
512x384 92.0 93.0 94.0 95.0 96.0
416x312 97.0
400x300 98.0 99.0 100.0 101.0 102.0
360x200 103.0
320x240 104.0 105.0 106.0 107.0
320x200 108.0
320x175 109.0

Problem with ATV refresh rates and frame rates

I live in Australia and as such I am subject to PAL, so when I set my ATV up I set it to 720P 50Hz, when I purchased a TV season the episodes were running at 25fps and played back flawlessly with no dropped or added frames. My problem occurs when I download movies, all the movies I have bought are running at 24fps and suffer from quite noticeable jitter, almost like the 24th frame is duplicated and added as the 25th frame, I assume it is something like this as the pause happens every second.
So has anyone had a problem similar to this and if so what do you do about it?
Does the ATV playback all sources (24/25) smoothly even if it has to convert?
Could it be caused by my TV?
Any help to any of these questions would be great.
Thanks.
Tim.

With my particular Apple TV setup and TV combination, I find that setting to 1080p (60hZ) gives my the best all-round round results.
This does result in -slightly- jerky motion with 25fps material (especially old British TV shows), but it's bearable. It's particularly noticeable with sideways scrolling text and credits.
The one thing that is peculiar on my setup is if I use 720p (either @60hz or 50hz) and watch an iTunes-purchased HD episode that is encoded at 24fps I get very odd motion effects indeed. Every few seconds the video appears to speed up almost like it is 'catching up' with lost frames - very hard to explain exactly how it looks. Anyway I set to 1080p and this effect is gone completely. It also goes away if I set to 1080i. I think something queer is going on with 720p on the Apple TV (at least with my TV there is). This happens with both HDMI and component outputs.
It may be worth trying 1080i at either 50 or 60Hz if your set can't do 1080p.
I would also suggest that 60hz in theory should give a smoother motion for 24fps playback than 50Hz.
My basic problem with all this is that on even a cheap DVD player if a disk is 50Hz, the player switches to 50Hz output and if it is 60Hz, it will change to 60Hz. The Apple TV stays fixed. It's a shame it can't autoswitch refresh rates.

Sony KDL32W4000 - missing bits on overscan; blurry; refresh rate

I've connected the mini to the TV (which is a full 1920x1080 HD set) - using mini-DVI to DVI-D to HDMI.
When in overscan I'm missing the edges of the screen - the menu bar at the top is outside the physical border of the screen but is usable (ie I can use the mouse in the border of the screen but can't see either the mouse or the top line of the menu). When it's not in overscan I'm using about three quarters of the screen.
Is there a way to make it fit the screen within the physical borders of the set (ie using overscan but keeping the borders of the screen within the physical boundaries of the set - or turning overscan off but expanding the screen out to the boundaries of the set).
It is, I think, a 100hz set but in display options I'm only seeing 60hz - is there a way to increase the refresh rate when used by the mini?
The screen fonts are also a bit blurry - any tips on who to improve visual acuity?
I haven't upgraded to 10.5.7 at this stage due to the problems people have been having with it - will do so once I do a time machine backup of the current setup.
Thanks.

Answering my own questions again - you get the full screen filled out to (but not past) the borders of the set if you set the display area to full pixel rather than "normal" (press Home on the remote then navigate using XMB to settings) and then on the Mini set the Mini's display prefs to overscan. The full pixel setting only affects the TV when it is getting a signal from the pc and doesn't apply when it is used as a TV (so no need to reset it when you want to use the TV as a telly). The font still isn't amazing but this may be due to me sitting further back than I'm used to.

Refresh rate settings

I got a monitor 20.1" Samsung SyncMaster 204b, which blinks on and off when using 1600x1200 60Hz resolution.
After extensive search I found information that setting the refresh rate to 56Hz would help, but unfortunately that option is grayed out in OSX 10.4.9. I downloaded SwitchResX program and modified the refresh rate via that and it worked! Now the problem is that the SwitchResX is about $15-20USD and to me it feels kind of silly to pay money for grayed out option that I should be able to use.
How can I enable this option and use OSX regular way to set my monitor refresh rate to 56Hz?
Mac Mini Mac OS X (10.4.9)

Here is the specs for the Mac Mini I have: http://www.everymac.com/systems/apple/macmini/stats/mac_mini_g41.5.html
Well, unfortunately mine does not work unless the refresh rate is set to 56Hz. I searched internet quite a lot and it seems that Samsung SyncMaster 204B (or at least some models) does have this problem. I have two of these monitors for my company, as they were cheap and work well with my laptops. Now when I tried both of them on my Mac Mini the problems appeared.
Back to the original question, how can I force my OSX to use 56Hz instead of the manufacturer default setting? The option is grayed out for some reason and with the application mentioned in first post I was able to change that. That application costs money and it feels kind of silly to pay for grayed out refresh rate option.

Mac Mini 120 hz refresh rate?

I've had my mac mini hooked up to my samsung 3d tv since i bought it. it's only been outputting to the screen at 60 hz.
I want to be able to use 120 hz, just cause my tv has it and i do have 3d video files that do play, but want to see if they would look better at 120 hz.
I'm outputting to the tv via HDMI for video and sound.
I look at the sys prefs and display. I see the drop down for refresh rate and its set to 60 hz. there's options that go up to 75 hz but they're whited out and unavailable for use.
my tv is 120 hz, why can't i get my mac mini to display at the rate?

No re-read the 4th paragraph in the first article,
because like most all other devices the iMac does not output at 120Hz.

What refresh rates does the Macbook Pro 2011 support? (Internal Display)

While I know you used to be able to change the refresh rate via General Settings, now you have to use an app or probably something terminal related.
Ignoring this, I just got a new 2011 MBP when my old one couldn't be fixed and after having the display/resolution upgraded I noticed that, when scrolling webpages, there is a bit of... I dunno, ghosting or something? Nothing that indicates there is a problem with the display or card, but it's something that could probably be fixed by a stronger refresh rate.
So my question is as the subject states. What is supported? I read 60 and 75 is typical for Apple, but I want confirmation. Remember, internal display, not external.
Thanks!

For some reason Displays no longer shows that information, so I don't know what it is. However, the last time I saw the information on a 2009 MBP it was 75.
I'd think there is a utility around that might provide the info like Display Maestro 1.1.7 or SwitchResX.

IMac 20" refresh rates question

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