Checkerboarding and Sparatic Colors!!!

[jrz895]

Hello everyone! Lately I have been having problems with my SLI config of two 9800 GTX cards. Now there are moments when im playing a game and all of a sudden the screen checkerboards black, random textures start flashing different colors (DISCO!! ), and the games also freeze suddenly after that. Rarely it ends with a BSOD. Now I've been trying to solve this problem for a while. After failing to flash the bios on my new mobo (crud) I am back to the old one that never had any problems. Alas, I am having them again. I've switched between the cards on the other mobo with the same effect on both, but only have 1 of them in on this setup. Is it possible its the PSU?? It's an Antec Truepower Quattro 850W. I think it might be it because when I went to take out some RAM, the computer would'nt turn back on. I had to keep unplugging the comp, and turning the PSU on/off until it worked.

 

[wa1]

Then try each one of your 9800GTX, check which one is defective...

 

[jrz895]

Umm I already did. Thought I specified that. They have both been tested with the same effect on both on both of the mobos.

 

[jrz895]

Also, using Hwmonitor and Speedfan, my 12v rail is running at 11.52. Now I've been looking around and saw that anywhere from 11.7-11.5 means PSU is starting to die. Is this true? I've had it for about 18 months now. Also this PSU has very bad reviews of it dying after a long period of time. Other than the answer to this, I would still like to know if PSU failure can cause artifacting.

 

[jrz895]

I just looked at the PSU box and it says that each rail only outputs 18a!!! On newegg it said 25a when I bought it. I bought the 2nd card during last April. Now how could it have ran 2 9800gtx for that long??? Is it just dying now because of the wear from them?

 

[jrz895]

BUMP

 

[peterson328]

I had a similar issue with my video doing that. The cause of this issue was not enough voltage being applied to the RAM (on motherboard). My G.Skill 4GB ram required 2.0-2.1 volts, but was only receiving 1.86 volts. After upping this to around 2.004 volts this issue hasn't presented itself after hours and hours of gaming.

 

[jrz895]

Hmmm well thats kind of a late response because I have already moved on to a GTX 470 but thanks anyway!

 

[Mousemonkey]

This topic has been closed by Mousemonkey