PDA

View Full Version : Can't overlock my SLI setup... help?


GRAFiZ
01-28-05, 04:57 PM
Specs:

Gigabyte K8NXP-SLI
Athlon 64 3500+
2x512 G.Skill PC4400LE
2xBFG 6800GT OC
2x74 gig 10K Raptors
BFG 550 PSU (Rebadged Fortron 550)

I'm running the 71.20 ExtremeG drivers.

Ok, well, no matter what I do I can't get more then a few mhz out of each card.

It's stock 370/1000, if I go to like 380/1050, it'll lock during 3dmark05. When I run Detect Optimal Freq. it'll lock up after the bar gets about half way through.

It runs 3dmark05 fine when I leave the clocks alone.

Anyone else know? Do I have some bumb cards? Am I using the wrong drivers?

Thanks!

saturnotaku
01-28-05, 04:58 PM
You have SLI, what the hell do you need to overclock for?

Mr_LoL
01-28-05, 06:45 PM
Probably to try and get this double performance over single slot solutions as nnidia claims

Ronin
01-28-05, 08:16 PM
nVidia never claimed you would get twice the performance. They said you could get UP TO twice the performance, but never promised it. Theoretically speaking, getting twice the performance is extremely difficult (have you ever gotten 100% of your effective memory bandwidth on Sandra? I'm betting not).

mustrum
01-29-05, 05:20 AM
You disabled fastwrites allready?

bkswaney
01-29-05, 05:51 AM
You have SLI, what the hell do you need to overclock for?


I must agree with that statement. :D :angel:

Slammin
01-29-05, 08:14 AM
My bet would be that if you are not using NV-5's on them, you are heating up. Try with your case open and see if you get better results.

nkarnold
01-29-05, 08:25 AM
You disabled fastwrites allready?

Fastwrite is an AGP thing.

These are PCI-Express cards.

mustrum
01-29-05, 11:59 AM
Fastwrite is an AGP thing.

These are PCI-Express cards.
:eek:
:banghead:
(pb)

jAkUp
01-29-05, 12:07 PM
Probably to try and get this double performance over single slot solutions as nnidia claims

It actually is about twice as fast in some cases.

adpr 02
01-29-05, 01:20 PM
I would overclock if I had 2 6800 Ultras, no question about it. I love squeezing every last clock out of my hardware.