PCI-E Gen 2.0 Bug X38/ X48/X58

[Maxforces]

Thanks for the information STEvil and Ket.
I have passed on your suggestion to ASUS STEvil. Hopefully nVidia will resolve this by the driver as it makes more sense to check for X38 and then never lower the P State as opposed to check for X38 and then revert to legacy PCI-E Gen 1,0 mode.
Am I right in assuming Single PCB GTX 295's do not have support for P-State in their vBIOS? or is it just some quirk that the only nVidia cards running happily @ Gen 2.0 on my P5E3 is a GTX 295. 280 and 285 cards only run @ Gen 1.

By the way, Gen 1 does have a detrimental effect on the GTX 295's performance. (On occasional cold boots it reports Gen 2.0 but actually transfers @ Gen 1 speeds). FYI when a GTX 295 is running @ Gen 1 I lose 1000 Vantage points, 1000 3dmark 06 points, 0.2 WEI on the Graphics card.... and GTA IV is horrifically stuttering and laggy.

I have also spoken with someone called Chris who is heavily into CUDA and he says that Gen 1.0 cripples CUDA Performance on his GTX 480 (even in Linux as nVidia have put the lock on those drivers too).
So this IS an issue which needs resolving
John

problem is only in idle mode and you don`t loose performance


when you run 3D mode PCI-E returns to PCI-E 2.0


same on 9800GT,GTX480/470 on X58