buying cubix and looking for cards to beef up Mac resolve system. looks like gtx-570 2.5gb is best cost - performance at the moment. any downside to getting 3 of these versus something else?
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07-28-2012, 03:36 PM
buying cubix and looking for cards to beef up Mac resolve system. looks like gtx-570 2.5gb is best cost - performance at the moment. any downside to getting 3 of these versus something else?
07-28-2012, 03:52 PM
GTX-570 needs to be hacked or re-flashed to run properly in a Mac under OSX 10.7.3 and newer. Best source for them is from the MacVidCards guy on eBay.
You're not going to fit 3 of the 570 cards into a standard Cubix unit unless you buy their larger rack-mount units. The desktop units come as a 4-slot width. You can get one with 2 double-spaced slots or one with 4 single-spaced slots. Some liquid-cooled GTX-570 card options out there will shrink the cards into a single slot width, but by the time you go with liquid cooled and Mac-flashed cards, you may as well buy Quadro 4000's -- would probably be cheaper. ;)
3 GPUs like this trying to run through a single PCIe X16 slot is also going to be a bottleneck. And then we also have the question of what Mac you're running and if this will even be worth pursuing. For the price of the Cubix box alone, you're well on your way to the price of assembling a dedicated PC system just for running Resolve.
07-28-2012, 04:01 PM
i am getting the latest desktop 4 - which is 4 double width 16x slots with 80gbps max bandwidth. that should work with the three cards right?
3 570 cards is less than a grand (unflashed) and used cubic boxes going for about $1500.
this would be on 2010 8 core
07-28-2012, 06:48 PM
The standard PC cards work really well in a Desktop 4 cubix which can support 4 double-wide cards (limited to 3 on Mac due to total limit of 4 GPUs). Make sure you get the Cubix variant which support full x16 cables, etc.Originally Posted by Jeff Kilgroe
07-28-2012, 06:59 PM
Thanks Rohit, and yes full 16x
So the 2.5 GB per card is ok?
07-28-2012, 09:19 PM
2.5GB is good
Peter
07-28-2012, 10:41 PM
Thx Peter
07-31-2012, 05:59 AM
OK... Yeah, forgot Cubix makes a desktop model with 4 double-width slots now. So how are you guys getting past the way the GTX570 is being crippled without re-flashing it? Or do you just run it in crippled / low-power mode and find that acceptable? Or stay with OSX 10.6.8? ...or has the latest nVidia driver release addressed this issue? I have not tested the 570/ 580 cards since nVidia posted drivers right after the OSX 10.7.4 release.
...I don't think they have updated drivers since that 5/10/2012 release though.
07-31-2012, 06:06 AM
Hi Jeff,
We get near identical performance with the PC 570 version on the Mac Pro as compared to a PC. For Resolve use, it's not crippled at all.
With V9, there is a new option in the SDI monitoring section which makes using just a single 570 really awesome.
Rohit
08-03-2012, 12:03 PM
got the 3 GTX 570s running on resolve v9b now. awesome. os 10.8.
haven't done a total nodes/blur/nr realtime test yet because I had 4 jobs to complete, but I did notice that output render on prores 1080 23.98 was cooking at about 80 frames a second on a job with 2 or 3 nodes a shot and occasional NR. is that good?
btw total cost:
used Cubix desktop 4 - $1500
3 GTX 570s - $950
pretty good investment!
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