MacVidCards cracks the GTX5xx cards – Fastest Mac EFI card EVER !!!

[Christian Betong]

Would we need the modified EFI version of this now with the new Nvidia drivers?:
https://forums.macrumors.com/showthread.php?t=1330964

At least if you use the 580 as a secondary (not for gui) GPU for resolve.

If you use Premiere or other software that utilize the CUDA of the main GPU this is great, but I cant see how this would help those using Resolve on mac.

Christian Berg-Nielsen
Sement&Betong
postproduction
Norway

[Sascha Haber]

Very happy to hear 🙂
Perfect for Smoke and Scratch/Lab
As a GPU only , they work already today.

A slice of color…

DaVinci 8.2.1 OSX 10.7.2
MacPro 5.1 2×2,4 24GB
RAID0 8TB
GTX 470 / Quadro 4000
Extreme 3D+

ICA Instructor
https://www.icolorist.com/Sascha.html

[David Pirinelli]

Yes, in a Mac Pro using the 10.7.3 “magic” driver, they do work…at PCIE 1.0 speeds of 2.5 GT/s.

Anyone running a self initiated GTX5xx or GTX4xx card try posting these screens

You won’t be able to post the “PCI slots” one because the self initiating cards cause an error that stops that screen, but you can see your PCIE speed in CUDA-Z (the device to host and host to device pinned speed shows PCIE speed)

Pretty sure my EFI cards are only ones that run at PCIE 2.0 Spec of 5.0 GT/s.

Due to how Mac Pro enters BIOS legacy mode, it also affects Windows side.

BTW, these shots are NOT from the super fast Ultra Classified, these are from a standard GTX580 3GB that I have been working on. It’s ready.

[Jonathon Lee]

I’m confused? I bought a brand new EVGA GTX 570 2.5 GB from newegg as my GUI GPU and it works great. I’m even getting 10-bit from the DisplayPort connector on my DreamColor and HP ZR2740w monitors in photoshop. I’m using the Nvidia drivers… no nothing modded.

What am I missing here? I have a MacVidCards GTX 285 in another system from “back in the day”, but how are those cards functioning differently then a stock GTX with Nvidia stock?

– JL

[David Pirinelli]

Run CUDA-Z and post the screen shot like the above. My guess is that you will find the card running at PCIE 1.0 speeds of 2.5 GT/s. So while the card itself is running at normal speed, it’s link to the CPU is running at half speed. (Same as running at 8 lanes instead of 16)

For most things, you will never notice a difference. But at high data transfer speeds this will matter. If you don’t need the extra speed, no worries.

https://sourceforge.net/projects/cuda-z/files/cuda-z/Beta/CUDA-Z-0.6.133-SVN.dmg/download

It’s a simple little app, useful for diagnosing CUDA issues.

Coincidentally, today I am working on GTX570 with 2.5 GB and Displayport. Should allow boot screens and use of System disks on an Apple 27″ etc when I am done.

Already have the PCIE 2 enabled

[Jonathon Lee]

Hey David,

OK, got it. I’ll run that test tomorrow. I’m very curious about this. Under system profiler it is reported that it is at full speed, but who knows what that number really means. That’s a bummer.

What about the GTX 680? Any luck with that one?

– JL

[David Pirinelli]

“Under system profiler it is reported that it is at full speed”

I am curious where you see this under System Profiler ?

On cards using the “Magic Driver” the section of system profiler that shows PCI card speeds doesn’t work. So there should be no way to see what speed they are running at. The “Graphics & DIsplays” section doesn’t show link speed. People using Cubix also frequently report seeing the same “Error while gathering PCI info” or something to that effect.

Another way to see whether your card is running in PCIE 2 at full speed or is stuck in PCIE 1.0 at half speed is to use lspci, this is a piece of the OS that Apple decided not to include but you can install it. RUn CUDA-Z in background to create a load.

using “lspci -vvv” you will likely see this:

nkCap: Port #0, Speed 2.5GT/s, Width x16, ASPM L0s L1, Latency L0 <1us, L1 <4us
ClockPM+ Suprise- LLActRep- BwNot-
LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- Retrain- CommClk-
ExtSynch- ClockPM+ AutWidDis- BWInt- AutBWInt-
LnkSta: Speed 2.5GT/s, Width x16, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-

Our cards show this instead:

LnkCap: Port #0, Speed 5GT/s, Width x16, ASPM L0s L1, Latency L0 <512ns, L1 <4us
ClockPM+ Suprise- LLActRep- BwNot-
LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- Retrain- CommClk-
ExtSynch- ClockPM+ AutWidDis- BWInt- AutBWInt-
LnkSta: Speed 5GT/s, Width x16, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-

I will have a crack at 680 EFI soon, but currently there is little point since the drivers don’t have support.

So if I write a good EFI for it it will show boot screen but crash at desktop, or show unaccelerated 2D.

[Gustavo Bermudas]

David, could you explain more how do you get more power in the Mac? Are you offering these cards now?

[Jonathon Lee]

Ah… I see now. It looks to be running at half speed like you said it would be. I think the higher speed showed up when the original AMD 5770 was installed, I’m pretty sure that one showed up at full speed. Let me know when you have the 570 working at full tilt.

[Gabriele Turchi]

damn …i just ordered one as well …

so , david you think that in resolve will perform less ?

any way you can run a little test for us on the regular 580 (but that have your full speed mod ) , using the candle test maybe ?

thanks

g

Davinci Resolve Control Surface
MacPro
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2 Red Rockets
GTX470+GTX470+GTX470
24GB RAM
HP Dreamcolor
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