Davinci Resolve GPU

[Jed Weintrob]

Question: Other than the boot screen, what is the difference between using a stock GTX 570 card (I’m using the EVGA GeForce GTX 570 HD Double Shot 1280 MB GDDR5 PCB PCI-E 2.0 Graphics Card 012-P3-1577-KR) and using the one that’s tweaked by MacVidCards?

I’m running 10.8.2 on a MacPro 5,1 with a GT120 as GUI

As far as I can tell, the performance should be the same from both my card and the MacVidCards one, but I’ve recently heard otherwise.

Thanks
Jed

[Margus Voll]

To be precise then stock versions data bus runs at 2,5 gig
macvids runs 5 his.

—

Margus

https://iconstudios.eu
https://vimeo.com/iconstudioseu/videos

DaVinci 9, OSX 10.7.4
MacPro 5.1 2×2,93 24GB
GTX 470 / Quadro 4000
Multibridge 2 Pro

[Jed Weintrob]

Ok. But how does that translate into speed in resolve (faster bus does not always equal faster performance, depending on overall data flow)??

[Eric Hansen]

hey Jed

from what Juan has told me, when running them as GPU cards and not GUI cards, there is no difference between the PC cards and the flashed cards from Macvidcards.

e

Eric Hansen
Production Workflow Designer / Consultant / Colorist / DIT
https://www.erichansen.tv

[Deleted User]

Eric,
Am I wrong that the GTX570 takes up two slots in a Mac tower? I currently need two slots for RAID card and BM HD-SDI card. If I keep ATI 5770 for GUI, what would be my options for CUDA card?

Lee

SAMDOG Digital Post
Calgary, Alberta
Mac Pro 2.66 12-core 16gb ram • FSI LM1760W Monitor • Matrox MX02 or BM Decklink • Caldigit HDPro2 8tb Raid • Avid Artist Transport • MC6, FCP7, PremierePro, Resolve.

• Living my life one frame at a time •

[Eric Hansen]

yes, the 570 needs a double wide slot, as does the 5770. i had a similar issue, so i replaced the 5770 with a GT120, which is a single slot. it’s a step down for sure, and i’ve been thinking about getting a Quadro 4000 (single slot) with a second power supply to replace it.

also, most RAID cards need an 8x slot. slots 3 and 4 on the Mac Pro are 4x, so your RAID card won’t run at full speed.

e

Eric Hansen
Production Workflow Designer / Consultant / Colorist / DIT
https://www.erichansen.tv

[Juan Salvo]

It depends on your model but I believe on the mac pro 4,1 5,1 slot 3 is x8.

Colorist | Online Editor | Post Super | VFX Artist | BD Author

https://JuanSalvo.com

[Deleted User]

Eric,

I’m using a Caldigit RAID where all that’s in the Mac tower is a PCIe card. The controller is in the RAID. I’m getting around 700mb/s Read/Write.
I’ve been using Symphony up til now for grading which is convenient for staying in the NLE. But I’m sure enjoying Resolve even with the ATI card.

Lee

SAMDOG Digital Post
Calgary, Alberta
Mac Pro 2.66 12-core 16gb ram • FSI LM1760W Monitor • Matrox MX02 or BM Decklink • Caldigit HDPro2 8tb Raid • Avid Artist Transport • MC6, FCP7, PremierePro, Resolve.

• Living my life one frame at a time •

[Eric Hansen]

on my 3,1 and 4,1:

slot 1: 16x (double width)
slot 2: 16x (single width)
slot 3: 4x
slot 4: 4x

pretty sure the 5,1 is the same.

e

Eric Hansen
Production Workflow Designer / Consultant / Colorist / DIT
https://www.erichansen.tv

[Eric Fiegehen]

FYI – Cubix’s 3m limit on cable length upgrades is due to PCIe spec (and physics) limitation on 16-channel signal extension via copper cabling.

When / If Cubix figures out a way to put all 16-channels of native PCIe bus signal through fiber optic, that would not only be a really cool solution to present, but also make your workstation environment much quieter. We’re talking distances supported of up to hundreds of meters between Cubix device and Mac Pro.

Regards,
Eric Fiegehen
Cubix