What is wrong with my video card?

J

jEnkinsX

Limp Gawd
Joined
Apr 23, 2005
Messages
282
I tried overclocking my video card 7900GTO and when i am able to set higher speeds i get lower scores.. and when i first benched i did okay but setting it @ those speeds gives me artifacts in ati tool:
[+]------[+]
| CARD 1 |
[+]------[+]

@ 650Mhz/660Mhz(1.32Ghz Effective) - Stock Speeds
3DMark03 - 20263
3DMark05 - 9814
3DMark06 - 5627
Aquamark3 - 90532

@ 681Mhz/735Mhz(1.47Ghz Effective) - Optimal Frequencies
3DMark03 - 21459
3DMark05 - 10174
3DMark06 - 5926
Aquamark3 - 90928

@ 690Mhz/780Mhz(1.56Ghz Effective) - Overclock # 1 ------ Best Scores
3DMark03 - 22083
3DMark05 - 10332
3DMark06 - 6067
Aquamark3 - 91174

@ 694Mhz/791Mhz(1.58Ghz Effective) - Overclock # 2
3DMark03 - 20582
3DMark05 - 10302
3DMark06 - 5568
Aquamark3 - 91052

@ 696Mhz/799Mhz(1.59Ghz Effective) - Overclock # 3
3DMark03 - 19613
3DMark05 - 7012
3DMark06 - 5433
Aquamark3 - 91200

@ 690Mhz/800Mhz(1.60Ghz Effective) - Overclock # 4
3DMark03 - 21079
3DMark05 - 8951
3DMark06 - 5643
Aquamark3 - 91076

now when i tried setting it to 690/780 since i got the best scores on those i get artifacts in ati tool :( how come?
 
did you watch the temps? what are they? and ATI tools is bs it underclocks my 7950GX2 how dumb.
 
There are certain cases where, a really high clockspeed, actually hurts your performance.

If your temperatures are too high, or certain shaders are producing errors, your score is going to decrease.

It's fairly well known that, at certain speeds, your card will produce worse results at a very high clockspeed without adaquate voltage.

:)
 
right now im scanning for artifacts @ 670Mhz/750Mhz
my temp is 64 degrees
how do i check and change how much volts my card is getting?
 
With a multimeter and some solder.

No, I'm not joking.

You can also flash to the GTX bios, which I believe pumps another 0.05v through the chip!
 
i am using the BIOS 05.71.22.39.08 and when i loaded it into Nibitor it shows 1.4V.. how much volts does a GTX get?
 
I'm almost positive the GTX flash only increases the Vram voltage... Now that I've done a bit of research.

But I dont have a 7900GTO, and therefore this suggestion should be taken with a grain of salt.
 
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