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GPU RAM question
OK, so the Config Guide does list verbose requirements for GPU RAM. It looks like for 3D a Q4000 is required for the GUI. Makes sense. But what is necessary for the GPU’s for 4k mono and 4k stereo for Mac and Win.
I have one Mac and one Win7 Resolve. One of them will eventually have a cubix with 3x GPU’s. The GTX 570 and 580 cards have multiple versions with different amounts of RAM.
– What is actually required for 4k with regard to GPU RAM for mono and stereo.
– Does the source file format have an impact on VRAM requirements?I’ve read some reviews on some of the GTX cards and it appears that some of the cards with greater VRAM sizes have performance issues due to memory bus architecture. It seems to effect gaming performance so it may not impact CUDA processing. I don’t know enough about this to speculate why.
Anyhow, please chime in.
thanks,
Jonathon
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18 Replies
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The mac is not certified for 4k with any graphics card. In the config it only has up to 2k support. That’s single channel not stereo. I have a gt120 for gui and GTX480 for processing and am able to do 3D HD quite effectively. Might be able to pull off 2k-3D, but if you seriously want to do 4k-3D with RT performance, Linux seems like your only choice.
That said with HD proxies you could definitely handle grading and reviewing on the mac, and it wouldn’t require the 4000 for gui, though it might not hurt.
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Thanks Juan, I appreciate the info. I do understand that a Mac platform resolve has some limits.
Regardless of the platform, I’ve heard it mentioned that a certain amount of “GPU” RAM is required for 4k. I’m not sure if this is true or not. I’m wondering if 1GB of GPU ram is sufficient for any 4k work. It looks like 4k mono is supported on windows, but not stereo. I’d for sure be working in proxy mode, but when it’s time for final output at 4k are there specific GPU RAM requirements? What happens if there the GPU memory fills? Will there be a slow down or a crash? Is there a performance benefit to having more GPU RAM? Is there a correlation between number of nodes and GPU RAM?
If someone from BMD could answer that would be great.
thanks,
Jonathon
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I’ve render 4k at less than rt without issue. Not aware of a memory issue re: 4k images. But it makes sense. I think safe to say with VRAM more is better.
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We recommend 3GB GPU ram if you plan on doing 4K work.
1.5MB will get you by sometimes but its not advised.
Peter -
hope that this NAB will be the year of 4K session and output to 4K monitor from resolve …
g
Davinci Resolve Control Surface
MacPro
Cubix desktop 4
2 Red Rockets
GTX470+GTX470+GTX285
24GB RAM
HP Dreamcolor
Panasonic 58PF Plasma -
Thanks Peter! That’s what I was looking for. So a GTX 570 w/ 2.5GB VRAM is almost good enough, but not quite? So the GTX 580 w/3072MB of VRAM is the magic card.
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When we’ve tested other types of CUDA-accelerated applications such as iray or v-ray rt 2.0 for photorealistic rendering, we’ve seen similar performance increases when working with high resolution/high polygon files.
Eric Fiegehen
Cubix -
Quick question about the 4000 and 570.
I dont have a cubix but a 12 core with the 120/470 combo.
I have run into my first limitation while trying to render out 5K Epic i get a GPU error – I am told by the BMD team that I would need at least a quadro 4000 with 2GB vram as opposed to the 1280MB my 470 card has. I am grading off r3d obviously but need to render back at full resolution (a mix of 3k & 5k) at ProRes444 or HQ.
I can possibly borrow a friends 4000 tomorrow but first i want to be sure that it will be able to render out 5k ProRes files. If it does thats great and my life is save, BUT my other thinking here is to get a 570 card off ebay or locally here in NY if possible and upgrade my system to Lion in order to use the new drivers from nvidia on the pc version of the 570. I want to be sure I can use the cables my previous 285 and current 470 came with in order to connect properly to my 12-core. Most importantly I want to buy the ‘best’ card I can right now for my 12-core non-cubix setup.
Is this correct card even, and if there is a higher / better card someone can recommend please advise as I am willing to upgrade my system to Lion to get a beefy card in there. Also, should i swap my 120 for something else or am i fine – i would need a small card like that to fit in my box).
https://www.ebay.com/itm/EVGA-NVIDIA-GEFORCE-GTX-570-2560MB-320BIT-GDDR5-PCIE-2-0-DVI-HDMI-025-P3-1579-AR-/280841343022?pt=PCC_Video_TV_Cards&hash=item416372d02eDaVinci 8.2 OSX 10.6.8
MacPro 12-core 5,1 2.66 Ghz
32GB RAM (x4 owc 8gb sticks)
RAID0 8TB
Nvidia GT120/GTX470
BMD Extreme3D
HDlink3D DisplayPort
Dreamcolor/Panny VT25
Tangent Wave / WacomDrivers:
Nvidia Cuda 4.1.29
DecklinkExtreme3D 8.6
HDLink3D DisplayPort 3.5.1 -
You will have to upgrade to lion to use a non flashed card. As the new nvidia drivers require lion. I’d recommend the 580 with 3gb ram. I believe the power should be the same as 470 one 6pin & 1 8pin.
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Yes Juan I understand that a Lion upgrade would be necessary. I was told the 580 had power issues and that the 570 was the highest i could go on my macPro without using an expansion chassis.I believe my 470 card is x2 6 pin connectors no? Just want o make sure of that, as well as the 4000 question about it being able to render 5k or not..
DaVinci 8.2 OSX 10.6.8
MacPro 12-core 5,1 2.66 Ghz
32GB RAM (x4 owc 8gb sticks)
RAID0 8TB
Nvidia GT120/GTX470
BMD Extreme3D
HDlink3D DisplayPort
Dreamcolor/Panny VT25
Tangent Wave / WacomDrivers:
Nvidia Cuda 4.1.29
DecklinkExtreme3D 8.6
HDLink3D DisplayPort 3.5.1
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