Re: MacVidCards cracks the GTX5xx cards - Fastest Mac EFI card EVER !!!

"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.