[Adam Hendershot]

With a Mac Pro 3,1 you need to turn on 8-bit monitoring to get even close to 24fps and then you’re just on the edge with most formats. Unfortunately you’re looking at a new Mac for better performance. A new GPU will not help if you can’t play back at 24fps with no corrections. The Q4000 in a new Mac should be good for 3-4 nodes of realtime with ProRes on a newer Mac.

[Adam Hendershot]

Fun.

V01 04 blur nodes 24 fps
V02 08 blur nodes 24 fps
V03 16 blur nodes 24 fps
V04 32 blur nodes 12 fps
V05 64 blur nodes 6.5 fps
V06 01 NR 2 nodes 24 fps
V07 03 NR 2 nodes 09 fps
V08 06 NR 2 nodes 05 fps

Mac Pro 12-core 2.66, OSX 10.7.4, 24GB RAM, Radeon 5770 GUI, Cubix Desktop Pro 2 with 2xGTX570 3GB (flashed).

[Adam Hendershot]

I may have one. You can email me at adamwh (at) mindspring (dot) com if you want to discuss it.

Adam

[Adam Hendershot]

I’m getting the same 7-8fps that others seem to be getting with pro-res HQ output. This is with a Mac pro 2.66ghz 12-core with Windows under bootcamp. Source footage is uncompressed QuickTime 1080/23.98. Osx on the same machine is around 25fps.

Just for comparison, the other format we export to regularly, mxf 115, gets around 37fps in Windows and only 21 in Osx.

[Adam Hendershot]

[Sascha Haber] “And here are results from a Dual Cubix powered Quadro 4000 system with GT120 as UI.”

Is that a desktop 4 Cubix? Those scores are a little better than my setup with the same cards in a desktop 2.

[Adam Hendershot]

That seems a little low, although when I had a 2008 as our main machine we had a GTX 285 instead of the Q4000. The main tweak with a 2008 Mac Pro is to use 8-bit monitoring instead of 10-bit (on the config tab). Do you get 24fps with no corrections?

[Adam Hendershot]

Safe Harbor has it on their page for $719 plus the rebate. I didn’t check the shipping.

[Adam Hendershot]

[Ian de Brí] “That’s one Q4000 for ya!
Interesting to know there are alternatives to cubix.”

I’m pretty disappointed in the Quadro 4000 especially for the price. I am tempted to get two GTX470s for the Cubix and see what happens.

[Adam Hendershot]

2011 Mac Pro 12-Core (2.66)
ATI 5770 GUI
Cubix Desktop Pro 2 w/2x Quadro 4000
Decklink Extreme 3D+
ATTO FC41ES connected to Terrablock 24D

V1 – 24
V2 – 24
V3 – 22
V4 – 12
V5 – 24
V6 – 21.5
V7 – 11
V8 – 3

EDIT: For fun I put the GTX285 from our second system in the Cubix along with the 2 Quadro 4000s for 3 GPUs total (if mismatched).

V1 – 24
V2 – 24
V3 – 24
V4 – 18
V5 – 24
V6 – 24
V7 – 16
V8 – 4

[Adam Hendershot]

[Eric Fiegehen] “Cubix part numbers to reference with your DaVinci Resolve dealers (most of whom carry or sell GPU-Xpanders) for Desktop 2 are XPDT-X16-24-OSV (No. America) and XPDT-X16-24-INT (International). GPU-Xpander Desktop 4 part no’s are XPDT-X16-4QF-OSV (No. America) and XPDT-X16-4QF-INT (International)”

Does a 2 GPU Desktop 2 offer the same performance as the same exact GPUs in a Desktop 4?

I guess what I’m asking is: where does the 40Gbps limitation of the Desktop 2 really factor in? Also, so you still see a benefit from 3 GPUs as opposed to 2 or are you already bottlenecked?