nVida O/C tool --- WTF??

[cpt_damage_1]

Hi guys,
First off here are my rig specs:

CPU: AMD 3500 x64
MoBo: AN8SLI - Delux
2 Gig memory
650 watt SLI Psu
x1 XFX 7800GTX (450/1.2)
x1 Inno3D 7800GTX (430/1.2)
Both cards in SLI

Anyway, I installed Coolbits and used it to automatically dectect optimum settings for my GPU's. The settings it came back with were 490/1.3, OK great I though more 'Omph'. Bear in mind that the original clock speeds were 450/1.2 on one card, and 430/1.2 on the other (so quite a big increase).

I ran 3Dmork06 and yeah I got about an 80point increase in my score, hit about 5085 with no artifacts. So then I ran BF2 and it played fine then all of a sudden I got a weird squeeling noise from my headphones and then the sound of my gun firing had dissapeared! Everything else was OK. Restarted the game and it was OK for a few minutes but then WAM it happened again .. no sound for my gun

So then I set my GPUs back to stock, loaded up BF2 and all was fine and dandy again.

Long post I know but does anyone know why coolbits automatically detected that my cards could be run at 490/1.2 when it clearly causes problems? I mean 490, thats an increase of 60mhz on the Inno3d card.

Oh, just incase you are wondering why I have a weired mix of GPU's, its down to a very long RMA procedure and the fact that my GTX broke just as Serious Sam2, COD2, Quake4 and F.E.A.R came out.

 

[cpt_damage_1]

Hi,
I wasnt using BF2 as a benchmark , just having a few games! I thought that because nVidia design the cards, their software would be the best to determin the optimum clock speeds. Im not really into Ocing but just ran the coolbits to unlock a few bits in the drivers when I cam across the thing that lets nVidia decide the best clock speeds for my cards. And to be honest 3Dmark worked fine ... But BF2 didn't.