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Frequently Asked Questions About NVIDIA PC (non-EFI) Graphics Cards
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I have a very similar issue, although I'm using a 1,1 ->2,1 with a GTX680 with sfott yosemite.
Card works great in bootcamp windows 7, but screen stays blank under OSX.
I've tried flashing the card with a MAC bios on this forum and it's still the same. Tried both DVI ports, i dont have a DP cable to test with at the moment. I think it boots to the login screen as I can here the volume change if i press the keys.
My Mac is basically a PC at the moment - HELP
I have a very similar issue, although I'm using a 1,1 ->2,1 with a GTX680 with sfott yosemite.
Card works great in bootcamp windows 7, but screen stays blank under OSX.
I've tried flashing the card with a MAC bios on this forum and it's still the same. Tried both DVI ports, i dont have a DP cable to test with at the moment. I think it boots to the login screen as I can here the volume change if i press the keys.
My Mac is basically a PC at the moment - HELP
There are known issues with certain ports on the Maxwell cards (GM107 and GM204) not working under OS X. For now, try a different port/connector and see if that works. Hopefully NVIDIA will address this soon.
I may have a problem with this new CUDA driver. After installing it on my 5.1 with a 970, CUDA-Z reports the following:
All the latest: 10.10.1 and Nvidia web driver 343.01.02f03.
More info: that latest CUDA driver really does break CUDA functionality on my system. Adobe Premiere reported no CUDA hardware. I reinstalled CUDA 6.5.25 and all is well again. Except that annoying startup warning.
CUDA 6.5.33 driver isn't working in my system!
I just realised that I can't get audio over my display port connection using my GTX 970 in OS X. Anyone know how to fix this? It doesn't show up in System Preferences or in the MIDI audio controller. Works fine in Windows (Bootcamp) though. I'm using the latest NVIDIA web driver and OS X 10.10.1
343.02.01f01 for 10.10.1 is out:
http://us.download.nvidia.com/Mac/Quadro_Certified/343.02.01f01/WebDriver-343.02.01f01.pkg
This allows both displays (DVI and HDMI) to work on my GTX 980, for reference. With the old driver, only the DVI port would work.
http://us.download.nvidia.com/Mac/Quadro_Certified/343.02.01f01/WebDriver-343.02.01f01.pkg
This allows both displays (DVI and HDMI) to work on my GTX 980, for reference. With the old driver, only the DVI port would work.
Still a Kepler driver though. Until someone releases a new Mac edition card there's no optimisations for Maxwell.
I predict it's coming soon though. Specs for the next round of Nvidia and AMD cards have been released and they are all coming at or under 200w.
I predict it's coming soon though. Specs for the next round of Nvidia and AMD cards have been released and they are all coming at or under 200w.
Why do you say that? The Blizzard games run brilliantly on my GTX 980, for example. Luxmark is also very good, much better than previous generations of NVIDIA cards. If you're seeing slow performance, my guess is that you're becoming limited by the CPU in your system (i.e. as the GPU gets faster and faster, you need a faster CPU in order to keep the GPU busy).
They run well but it's not a Maxwell native driver. When you do have proper support in drivers then the difference between performance in OS X and Windows is minimised. But currently the GTX 980 is much faster in Windows than in Yosemite. We have untapped power on the Mac side.
In fact some of the blame for the wonky CUDA driver could probably be put down to that. It is looking for the Kepler architecture and when it sees Maxwell it thinks 'I am not sure what this is, Dave'
Do you have specific examples of where the delta between OS X and Windows is greater on Maxwell than it was on Kepler? OS X only has access to OpenGL 4.1, and many applications are still using GL 2.1 or 3.2. These older APIs are far less efficient than DX11 on Windows, which means the GPU is often sitting idle for a non-trivial amount of time because the CPU can't feed it enough work. This has been true for years, and is not specific to the Maxwell GPUs (other than the issue being more obvious given how much faster the GPU is). You can easily measure this with the OpenGL Driver Monitor, which is part of the Xcode graphics tools package. I captured this while playing World of Warcraft at 100-130 FPS with max settings and FXAA on a 30" display. As you can see, when the GPU core is running at 100% utilization, performance is very good. There are plenty of other apps/games where the GPU core utilization is down below 50%, and those will run much slower than they do under Windows (because the DX11 app is more efficient and is thus able to keep the GPU much more busy).
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Forum member DMThomas made the most well known example on this forum at the link below. The performance of the GTX 670 between both operating systems was just a few frames per second. Yes the API was different but it didn't make much difference in the benchmark with the GeForce 670. Switching to the GTX 970 was a whole other story. Windows was much faster.
DMThomas post
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Frequently Asked Questions About NVIDIA PC (non-EFI) Graphics Cards
^^ Could you please correct the link for the post#? THNX!
^^ Could you please correct the link for the post#? THNX!
Frequently Asked Questions About NVIDIA PC (non-EFI) Graphics Cards
In TaT there is no page 7 ??? ;-) I get the beginning of the thread...
In TaT there is no page 7 ??? ;-) I get the beginning of the thread...
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