Mac Pro 4k 60Hz suppot

Does the new Mac Pro support 60Hz 4K output via thunderbolt2 to the Sharp monitor sold with it from Apple? If not is this an issue with the OS or the hardware?

>Yes. The HDMI port is limited to 30hz.
I don't agree. From the article:
These displays require using a Mini DisplayPort to DisplayPort cable or a High-Speed HDMI cable to connect to your Mac Pro. European versions of these displays do not include an HDMI port.
Note that these displays default to 30 Hz (instead of 60 Hz) and need to be manually configured to 60 Hz using the display's built-in controls.
The DISPLAYS need their parameters changed. That is not a limitation of the HDMI port on the Mac.

Similar Messages

4K Graphics Card @60Hz for Mid-2012 Mac Pro

Does anyone know which aftermarket graphics card supports 4K at 60Hz on the Mid-2012 Mac Pro? I can't seem to find one that does in any current forums.

Sapphire Radeon HD 7950 Mac Edition and Geforce GTX680 Mac Edition should work in your MacPro, and is able to do 3840x2160 or 4K under Mac OSX 10.9 Mavericks.
even newer cards though.

HT6099 why does the mac pro (late 2013) only support up to 60Hz at 1080p? TV screens are pretty much all 120Hz. So much for future proof.

why does the mac pro (late 2013) only support up to 60Hz at 1080p? TV screens are pretty much all >120Hz. So much for future proof.

http://en.wikipedia.org/wiki/4K_resolution
http://en.wikipedia.org/wiki/4K_UHD
http://www.techradar.com/news/home-cinema/high-definition/4k-tv-resolution-what- you-need-to-know-1048954
Need More Pixels? Samsung’s 2014 UHD TVs Ship This Month
Wall Street Journal · 2 hours ago
Samsung’s 2014 lineup of Ultra High-Definition (aka 4K) TVs are on the way, and thanks to UHD content deals struck with Fox and Paramount—not to mention the…
Focusing on TVs and 1080p and 60Hz isn't the question, or the 'future'

Sharp 4K Display 60Hz Mac Pro Bugs

Mac Pro (latest generation) 8x3.0Ghz + Dual 6GB AMD D700's
2x Sharp PN-K321 4K Display
When the display is put in MST mode (multi-stream transfer) it does not allow for rotation to portrait mode (270*). As far as I know the drivers allow for this and this issue is merely with resolution preset within OSX.
Please resolve this ASAP as the vertical real-estate afforded to me by portrait mode is useless (in my situation) at 30Hz and it's a bit disappointing that these displays are still having such issues when they're touted by Apple as being fully TB2 compatible (especially considering that TB MST has been around for a while).
Also given that you pushed major updates in multi-display support with 10.9.3 it's a bit ridiculous that such a basic issue would be unresolved, even on top-line flagship hardware.
If you need any help interfacing with the firmware please let me know as I am happy to assist, but seriously, you need to find a resolution to this.

The following thread could help your question.
Mac Pro Late 2013 and Samsung 4k monitor problem

Using 2005 30" Cinema display with new mac pro

I will order a new MacPro to replace my Mac Pro 1.1 immediately upon release. I also have a 30" Cinema Display version 2005. It's interface with the existing Mac Pro is three cable hookup: DVI, USB and Firewire 400. By connecting the Cinema display using a bunch of adaptors, can I make the display work with the new MacPro until a good 4K display is out there? Alternatively, I'll have to buy a new display from current technology or the few 4k's available today.
Thanks for your help.

yes, use a Mini DisplayPort to Dual-Link DVI adapter plugged into the ThunderBolt port. The HDMI port has limited resolutions, not including 1560 by 1600 best for 30" cinema display.
Graphics and Video Support
Intel Iris Pro Graphics
NVIDIA GeForce GT 750M with 2GB of GDDR5 memory and automatic graphics switching
Dual display and video mirroring: Simultaneously supports full native resolution on the built-in display and up to 2560 by 1600 pixels on up to two external displays, both at millions of colors
Thunderbolt digital video output
Native Mini DisplayPort output
DVI output using Mini DisplayPort to DVI Adapter (sold separately)
VGA output using Mini DisplayPort to VGA Adapter (sold separately)
Dual-link DVI output using Mini DisplayPort to Dual-Link DVI Adapter (sold separately)
HDMI video output
Support for 1080p resolution at up to 60Hz
Support for 3840-by-2160 resolution at 30Hz
Support for 4096-by-2160 resolution at 24Hz

4x NVIDIA GeForce 7300 GT cards in a Mac Pro run below max supported speed

Hi,
We have 4 "identical" NVIDIA GeForce 7300 GT 256MB cards in one Mac Pro (to support 8 DVI monitors for a Network Operations Center). One card came with the system, the other cards were purchased from Apple at the same time. This was a refurbished computer, so we didn't have the build-to-order option. I put identical in quotes because they seem to have different ROM revisions.
The system mainly shows graphs on webpages and HP OpenView (via X11), so no heavy-duty gaming or refreshes.
We have been running with 6 monitors for the past 4 months with the following monitors:
- 1x 42" LCD with 1280x768, 32 bit color, DVI
- 5x 22" LCD with 1680x1050, 60Hz, 32 bit color, DVI
When I restart the system, at least one of the 22" monitors takes 5 or 10 minutes of flashing on then off (mostly off) before it finally syncs up and shows a constant image. The 42" LCD won't go to its native resolution (can't recall what that is right now), so have to go down to a less optional 1280x768. In the next day or so, I'll be connecting one more identical 22" LCD and then soon after another 42" monitor, but am wondering if they will work. Yesterday, I saw a post about firmware update for this video card (http://www.apple.com/support/downloads/geforce7300gtfirmwareupdate.html). I also noticed that two of the cards have ROM Revision 3008 and two have 3011 ROM Revision of the cards (in System Profiler). I'm not sure yet if this firmware update increases the ROM Revision.
Running the Expansion Slot Utility (/System/Library/CoreServices/) shows that my PCI Express profile is set to Two x8 Lane + Two x4 Lane slots. All slots say that they are running below maximum speed.
The store.apple.com site still shows this configuration as a valid build-to-order, but I wonder if they do something different or extra.
Does anyone else have experience with 4 of these video cards with this many monitors?
Any experience with the Firmware Upgrade that I should know about?
Thank for any insight!

l_elephant wrote:
I notice that the flasher is connected to a card with ROM revision 3011, the later one.
I noticed this too.
now, to the slot profiles.
you say;
"The first one that I enter is the one to the right (looking from the back of the system)."
so you mean that the mac is laying on its side and your in the back, and what you call 'slot 1' is to the right? is that correct?
No, the system is upright, but the cards are horizontally seated. Pardon my ascii art, but here's the layout if I look from the back of the Mac Pro:
| DVI DVI ---->> slot 4
| DVI DVI ---->> slot 3
| DVI DVI ---->> slot 2
| DVI DVI ---->> slot 1
So, there are two DVI ports on each card (which is in a slot). I'm not sure which lane is which.
Either the left (as pictured) is lane 1, or the right (as pictured) is lane 2.
i ask because i'm wondering if your reproducing the way the expansion slot utility is graphically portraying it. I'm pretty sure the utility is showing the slots as if the mac is upright and the person is looking into the side of it with the access panel off.
Okay, sounds logical!
if you say that you have two x4 lanes and two x8 lanes, then i'm deducing that your flasher is on an x4 lane, and as it is, one of your x8 lanes has only one lonely monitor on it.
Probably correct.
In my utility window, it is the fourth configuration, so you would have at the moment;
slot4__x4__22" and 22"
slot3__x4__42" and 22" flasher
slot2__x8__22" and empty
slot1__x8__22" and 22"
I think that you have 2 and 3 reversed.
i would suggest trying the third configuration thusly;
slot4__x8__22" and 22"
slot3__x1__22" and empty
slot2__x8__42" and 22" flasher
slot1__x8__22" and 22"
in other words, check off the third configuration in the utility, then
exchange the connections on the second and third cards, leaving the first and fourth cards be.
Okay, will do.
as far as running below max speed, i figure as long as your workload doesn't suffer, then its fine.
Oh, and another question, does it always, always flash when you boot-up?
Do you guys shut down the system every night?
We rarely reboot it, and I'm not the only one that would see it reboot. This system is in a 24x7 Network Operations Center. I just know that rebooting takes a while for the monitor to come up all of the way.
Thanks for all of your help and guidance so far!
David

I cannot get full 4k2k resolution while bootcamp windows 8.1 on new mac pro

When using OS X Yosemite, I get full 4k resolution on my mac pro 2013 using a seiki 39" TV/monitor. However, when I'm using widows 8.1 on the bootcamp partition I can only get 1080P. Has anyone seen this problem? Is it the mini display to HDMI cord that I'm using? Would this still be the case if I went straight HDMI to HDMI? On OS X side its full 4k at 30Hz default, but in bootcamp its 1080P at 60Hz default. Thanks, footdocy.

Did you upgrade from Win 8 to 8.1? If so then:
Additional Information
4K displays and Ultra HD TVs using Windows 7, 8, and 8.1 with Boot Camp use the same rules as OS X. If you upgrade from Windows 8 to 8.1, you should repair Boot Camp drivers.

Mac Pro 2007 with Nvidia 8800GT screen redraw problems on Mac OS 10.5.2

I seem to be having a slight screen redraw problem. Such as when grabbing the browser window and moving up and down it seems the redraw can't keep up,also seems problematic when watching flash or other video online. It does it in the finder too for windows listings or in icon view there is a fluttering or flashing back and forth, kind of like a white super split second flash when dragging the window box smaller or larger not as bad as when making smaller. Hard to describe but my original Ge-force that I pulled was not having these characteristics. I figure that the drivers need tweaking. In windows I am not getting these results. I have newer boot camp installed as well as the leopard graphics update done so I am trying to see if others are having a slight problem or maybe it is me.
Also I make certain it is not heat related as I monitor that and it does not matter at what temp it is.

Here's another similar experience -- and my solution.
I bought a Quad-core 2.8GHz (8GB RAM) Mac Pro in May and got the "better" Nvidia 8800GT. I thought I was happy, but there were redraw issues after sleeping and a display "roughness" I found annoying. Upgrading to OSX 10.5.4 didn't help.
I found it to be mostly absent on startup, but sleeping the Mac would bring it on. I.e., after sleep, the relatiionship between the 8800GT would be different than before. when I logged out and in again, the problem woud vanish. No what I expect from a "superior" graphics card. I ascribed it to funky drivers from Apple.
The store I bought the Mac from offered to swap for my suggestion of an ATI HD 3870, so I went for it about a week ago.
This card is far smoother than the 8800GT and just as fast in rendering benchmerks for graphics. (I'm not a gamer.) I am a happy camper! There is no stuttering, oddball redraw, or jerkiness as there had been with the 8800. It's perfect! Never mind that it may be 5% slower for gamers, it feels faster for my use.
BUT NOTE: As I now see from reading several forums, I wasn't alone is getting a screaming-Mimi at first! The first 3870 ran at nearly full fan speed at power-up. The speed changed a little with resolution changes on my big Mitsubishi CRT monitor, and actually stopped when I switched to 1080x1920 @ 72Hz! Then the fan would start and quit, start and quit randomly -- convincing me it was defective.
I returned this RED-shrouded unit and the store replaced it, this time with (randomly) a BLUE-shrouded unit. (Slightly lower serial.)
Bottom Line: This replacement 3870 is quiet as a mouse! Fan runs near-silently at startup and after hours of regular use in a 75ºF room. I get the distinct feeling that a bunch of cards with wonky fan controllers were built, and some of us got 'em.
Bad News: The ATI HD 3870 does NOT support multiple refresh rates under Windows XP-SP2 booting the Mac Pro, with or without Boot Camp drivers installed. No version of the ATI drivers fixes this, and ATI does not officially support Boot Camp yet. You can choose a resolution okay, but you're stuck at 60Hz refresh -- a pain for those of us who hate 60Hz flicker. (I like 100Hz refresh.)

Mac Pro GeForce 7300 GT monitor frequencies support

I would like to plug two CRT 17" at 1024"x768" 60hz on a Mac Pro. Could you send me a link where I can find the detailed specifications of the Geforce 7300 GT for Mac regarding the detailed monitor frequencies supported. I saw the list of specs on the Nvidia site, but that only mention the max resolution and its frequency. Please help. I want to make my current monitors will work in stereo DVI config. before I purchase it. Tks.
Powerbook Ti G4 Mac OS X (10.4.7)

At 60Hz the Nvidia 7300GT, amongst most other cards, will practically run anything.

3rd Party 24" LCD on a Mac Pro via VGA

Hello,
I have my Mac connected to a 3rd Party 24" LCD via a KVM, which restricts me to using VGA for the connection. With my G5, I was unable to run at 1920x1200 until I upgraded to a Radeon 9800 Pro ME video card. I'm having the same issue with the NVIDIA card in my Mac Pro. It offers me 1920x1200 @ 76Hz which doesn't work with my monitor. I have checked a half dozen other monitors and none of them say that they will run at 1920x1200 and all of them recommend 1920x1200 @ 60Hz. I have that option with the 9800 Pro in the G5. Is there a way, short of changing video cards, of getting that option on the Mac Pro with the NVIDIA 7300 GT? If not, will the Radeon X1900 give me that option?
Thanks,
Bill

I found two solutions to this problem (though I'm running the ATI XT2600).
SwitchResX is available from <http://www.madrau.com>. The full featured program expands your video choices from the menu bar, but if you just need to make more resolutions available, the free SwitchResX app is all you need.
There is a hardware solution - the Gefen DVI Detective Plus lets you set parameters for a monitor and it then generates the appropriate signals to make the computer think that monitor is attached.
SwitchResX worked nicely for me, and is free.

What is better Mac Mini or Mac Pro and 4K 40" screen or iMac 5K for work with Exel

I am working on Macbook pro retina for around 16 hours a day, it is ok but the screen is to small. I am opening about 25 - 30 EXCEL windows, 20 - 25 safari windows at the same time. Excel windows are small, they only show 40 rows and S column Now I am considering buying iMac 5k ( but the screen is only 27", however a very high resolution but I think that fonts and digits displayed may be too small ). I am also considering Mac Mini or Pro with 40" 4K TV ( 4k computer monitors are 27 - 31" , so better idea would be purchasing iMac 5k ) . The problem is that 40 - 42" TV don't have Display Port ( I can't find it anywhere )
Please help me to choose what would suit my needs better. I need large screen to work comfortably with an Excel sheets. What is better? Mac Mini or Mac Pro and 4K 40" screen or iMac 5K for work with Excel ?. The other problem I have is that when I spend 16 hours at work with retina macbook , my eyes are ok. Using the 30'' Dell screen 2560/1440 my eyes are tired after 2 hours.
Thanks for your help on advance
Best regards
David

Currently you can only get 4 K at 30 Hz via HDMI. Some users have reported jerky curser movement because of the 30 Hz.
I would go for the 5K iMac. You can add a second screen at 4K.
FaceTime HD camera
Simultaneously supports full native resolution on the built-in display and up to 3840 by 2160 pixels on an external display
Support for extended desktop and video mirroring modes
The Mac Mini supports:
Support for up to two displays at 2560 by 1600 pixels, both at millions of colors
Thunderbolt digital video output
Native Mini DisplayPort output
DVI output using Mini DisplayPort to DVI Adapter (sold separately)
VGA output using Mini DisplayPort to VGA Adapter (sold separately)
Dual-link DVI output using Mini DisplayPort to Dual-Link DVI Adapter (sold separately)
HDMI video output
Support for 1080p resolution at up to 60Hz
Support for 3840-by-2160 resolution at 30Hz
Support for 4096-by-2160 resolution at 24Hz
The 2013 Mac Pro can use three and more displays:
Mac Pro (Late 2013): Using multiple displays - Apple Support
I would go for multiple screens

Mac Pro won't use 1920x1200 (VGA)

I have an Asus MK241 with a native resolution of 1920x1200/60hz. It's connected to an 8-port KVM that only supports VGA.
I bought a new Mac Pro and it refuses to let me run the display at 1920x1200. The best I can do is 1680x1050. I have it connected with a miniDisplayPort to VGA adapter. The Mac doesn't seem to have any problem retrieving the EDID.
Using DVI isn't an option. I don't have this problem with my older Macbook Pro running Snow Leopard or any of my Linux/Windows systems connected to the KVM.
For a $10K computer this is pretty disappointing.
I'm all out of ideas.

samberl wrote:
Hold down the option key when choosing "Scaled" in the Displays preference pane and the other non-available resolutions should be displayed, including 1920 x 1200.
Good luck.
Been there, done that, a long time before even posting here. The only additional resolution it gives me is 1920x1080.
I even tried overriding the EDID based on what I found here
http://apple.stackexchange.com/questions/106933/mavericks-not-able-to-use-extern al-display-at-full-resolution
Even though that issue involves miniDisplayPort-DisplayPort adapter instead of miniDisplayPort-VGA I figured it was worth a shot. It didn't have any effect, though.
I did veryify that it works correctly if I use a miniDisplayPort-DVI adapter and DVI cable. But DVI isn't an option, for reasons I don't want to go into here.

Newest Mac Pro: Displays How will 4K be displayed? : 4K 3840x2160 UHD 4096x2550 Where as: 27-inch Apple Thunderbolt Display=2660x1440

How will 4K be displayed? :
4K 3840x2160
UHD 4096x2550
Where as:
27-inch Apple Thunderbolt Display=2660x1440

4k is the generic term for resolutions that have a horizontal number of pixels around 4000. The two most common resolutions are Ultra Hi-Def (UHD) and Cinema 4K (C4K). The first is 3840x2160 and is exactly four times the resolution of "Full HD", or 1080p. The second is 4096x2160 and is one of the "standard" resolutions used in digital cinema projection.
The HDMI 1.4 standard supports both of these, but only at certain refresh rates. UHD, being the consumer version, is supported at 24Hz, 25Hz, and 30Hz; C4K is only defined for 24Hz since most of the material is going to be film-sourced. (This implies that 25/30Hz will include TV material at half their original rates of 50/60Hz.) Over HDMI, all four of these timing formats run at the same clock rate (297MHz, ignoring the fractional versions). This is the highest clock used in this version of HDMI, although the standard allows up to 340MHz. (There may be PC timing formats between 297-340...)
Using generic terms, we call these modes "UHD30" to imply resolution and refresh rate, and if a TV supports UHD30 it will always support UHD24 (although it is not a rule, merely a reflection of reality). A TV can only support C4K24 in 1.4, but it doesn't have to. There are many TVs that will support UHD24 or UHD24-30, but not C4K at all. So the practical limit of HDMI 1.4 is "up to 4k30."
HDMI 2.0, which the Mac Pro does not have [yet], provides dot clocks up to 600MHz (although above 340MHz, they are all divided by 4) and allows "up to 4k60" for pixel encodings of RGB444, YCC444, and YCC422. The new standard also allows 4k50/60 to use YCC420, which sacrifices some color information (known as 'uses chroma subsampling') but allows the data to be transferred at the same rate as 4k30. While "fine" for video--since it was probably delivered over BD/DVD or streaming at YCC420 to begin with--it is not fine for you computer's output.
I just got a 4k TV because I was tired of my dual 1920x1200 DisplayPort monitors after coming from the original 30" Cinema display of 2560x1600. Specifically, I used to enjoy >1080 pixels tall. But here's the problem with the 4k TV: while it has HDMI 2.0 inputs, the MacPro has only HDMI 1.4 so the output is limited to "up to 4k30". Moving the mouse is laggy and not smooth as it would be if the display were 60Hz. Furthermore, the MacPro is not offering me a choice between UHD or C4K--both of which the TV supports--and is instead defaulting to the largest resolution of C4K. This means the refresh is only 24Hz. And that's why I'm in the forums today--to see if there's a way to get my output to be UHD, but at 30Hz.
In a couple months, several companies will be selling DP-to-HDMI2 dongles that will support 4k60. So I am holding my breath until then.
Now, to specifically and accurately answer your question: Out the current MacPro's HDMI 1.4 port, you will get the highest resolution your TV (called the Sink) will support. If your TV has C4K24, then that is what will show up. If your TV does NOT have that, but has UHD24-30, you SHOULD get UHD30. If your TV ONLY has UHD24, then that's what you will get. If you get a TV, the chances are really, really good that the panel will have 3840 pixels across and 2160 lines down. In this case, you want the Mac to output that resolution and put the TV into pixel-for-pixel mode so every input datum is mapped to a single display element. Since most displays overscan, the Full mode will expand the incoming data from 2-5% which can eliminated the crispness (and also cut off the extremes of the Desktop). Also, if you are outputting C4K (like I am) AND you have switched to P4P mode, the horizontal dimension is shrunk by 6.6%.
If any of this is unclear, just reply. But I will say that this 40" TV is really useful, and once it is running at 60Hz...bellisima!

Re: 2010 Mac Pro + Yosemite + Radeon 7950

Just been told by Apple Technical Guy (19 December 14) that my ATi Radeon HD 5770 graphics card (bought from Apple!) is no longer supported in Yosemite!! I can try replacing with an ATi HD 2600XT, return to Mavericks or put up with the inconvenience that my primary screen seems to be the VGA source and each time I log in I get another Desktop Space! The odd thing is that the HD 2600XT seems to be an older graphics card than my HD 5770? Not sure what;'s going on? See details of problem here: https://discussions.apple.com/thread/6618898
Mac Pro (Early 2008), Radeon HD 5770, Yosemite

Hi Hattter!
Definitely nothing wrong with the card as I still have a Mavericks Partition on my system where everything works fine. Something has happened following the upgrade to Yosemite. This is how I described the problems to the Apple Tech Guy when I set up a new Yosemite partition ("Yosemite Test") WITHOUT transferring any of my own data files i.e. it's not a software conflict problem:
I still seem to have the same set of problems:
(1) Progress Bar starts on the main screen (DELL 2407WFP), screen goes blank, the Progress Bar completes on the small screen (Panasonic 19” LCD TV) which then asks for the logon credentials;
(2) First time boot from "Yosemite Test", the small screen defaulted to SVGA 800x600 rather than WXGA 1280x768 under Mavericks;
(3) First time boot from "Yosemite Test”, I noticed that in "Preferences / Display / Arrangement" the white "menu bar" was above the small screen ie the small screen seems to have defaulted as the principle screen during Yosemite set up even though the small screen connects to my Mac Pro via the VGA connection on the ATi Radeon HD 5770 GPU and the main screen via the DVi port;
(4) As before 1280x768 isn’t a listed resolution in "Preferences / Display / Scaled" unless I press "alt / Detect Displays / Scaled" when 1280x768 appears and can be set (and stays set through a Restart). NB: the TV screen (rather than the Mac Pro) only reports the correct resolution when I select 60Hz;
(5) As before I’m collecting new desktops each time I Restart - the new desktops showing up in Mission Control above the main screen;
(6) Whilst waiting to logon, the wallpaper shadow behind both main screen and small screen are the same although once logged-on the wallpapers may change - the the wallpaper on the main screen becoming the wallpaper on the small screen, the previous small screen wallpaper becomes an additional desktop in Mission Control at the top of the main screen. Finally the Yosemite default wallpaper (mountain) seems to appear at random on the main screen????
(7) As before, logging out (rather than Restart) and the logon credentials are back on the main screen.
I’m assuming this points to a problem with the Graphics Card Driver rather than a software conflict. Let me know if you need any more information.
There seems to be numerous reports of graphic problems with Yosemite some of which involve the HD 5770 card. From your comments, are you suggesting that there is no driver problem?
Regards
Scubaman31

Mac Pro 2013 power rating

This thing isn't meant to be used at full power, right?
I mean clearly 450W isn't enough to power 250W+250W for the D700s, 130W for the processor, and maybe around ~30-50W for the rest of the system?
What's the catch here? Why underpower it? Why make a product that can't handle its own specs? Even if there was a bigger power source for all of this to work, that "cooling system" has nowhere near the capacity to manage all of that heat. I'm of course assuming full usage on both the graphics and cpu at the same time, which isn't at all an uncommon task.
What I want to know how much throttling happens, and at what configuration can i fully use all of the components at their full potential? Can the base system configuration do this?

there was a good discussion as often happens over on MacRumors MacPro forum that touched on this very aspect and it does point to it not being able to handle maxing out and stressing both graphic units plus processor.
I usually throw in 100W for RAM, storage (even though this one barely needs any for its PCIe-SSD), and whatever power goes into 6 Thunderbolt ports.
300W use to be what 4 x 75W for the four PCIe slots in OLD Mac Pro.
Electrical and operating requirements
Line voltage: 100-240V AC
Frequency: 50Hz to 60Hz, single phase
Maximum continuous power: 450W
http://www.apple.com/support/macpro/
Step 22 ¶
With a rated output of 12.1 Volts and 37.2 Amps, we're looking at a 450 Watt power supply. The power supply has no dedicated cooling, and relies on the main system fan to keep cool—allowing the Mac Pro to idle at a whisper-quiet 12 dBA.
For comparison, we found a 450 Watt PSU in our recent Steam Machine teardown. The Steam Machine's SilverStone power supply featured a "silent running 80 mm fan with 18 dBA minimum."
And a quick look at what's left on the behemoth of a heat sink: Heavy gauge, flat power cables run from the PSU to the logic board and graphics cards, and remain intertwined in the heat sink.
http://www.ifixit.com/Teardown/Mac+Pro+Late+2013+Teardown/20778#s56812
Real world numbers:
" I quit FurMark and kept the FCP render going, which brought system power down from ~380W to ~326W."
http://forums.macrumors.com/showthread.php?t=1692536&page=7

Mac Pro 4k 60Hz suppot

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