Randomly flickering polygons in games Leadtek 6600GT

[slashdash]

I'm having trouble with polygons that flicker randomly on the game surface in many games. Some games are worse then others. Guild Wars is really bad, while Battlefield2 for example it only occures now and then. Here is an example of how it can look:

http://landala.mine.nu/dash/gwscreens/gw031.JPG

Commonly for all games is that this problem only occures after some time in the game. In Guild Wars I can play for about 5 min until the screen gets all flickery.

I have tried all the newest drivers including 71.89, 77.50 , 77.62 they all give the same result. I have dual 6600GT cards manufactured by leadtek. The GPU temperature is pretty stable at about 82 degrees. Is this too high? Or could it be the PSU that doesn't generate enough power? I tried stripping the computer from all devices I don't need .. still the same problem.

The only thing that works somewhat better is installing the leadtek drivers I got on a cd when I bought the cards, the same problem occures however, but not as forcefully as with the nvidia drivers(fewer flickering shapes but still glitches).

I have a MSI K8N Diamond Socket 939 motherboard with a AMD Athlon 64 3000+ processor and 1024 MB Dual Channel DDR RAM and Windows XP SP2 with DirectX 9.0c

Anyone seen this before or have any ideas on how to solve this?

[RamonGTP]

It could be temp related, or PSU related, but i'm going to place money on temps. IMO 82C is on the high side even for a 6800GT/Ultra let alone a 6600GT. You could pull the side panel off your case and have a regular house fan blowing right over the video cards to bring the temps down. If the graphical glitches improve or go away with the lower temps, then thats your problem. In which case you'd want to either improve the airflow in your case, or get a better cooling solution for the video cards, or even both if necessary.

[vikeor]

82C or 82F?

what u see are so called "artifacts" that u get when u overclock a graphics card or a graphics card is overheating.

If ur card temp is 82C id start worrying... if ur overclocking, then lower the settings... a 6600GT shouldnt go over 580/1250ish... then it gets dangerous

BTW.. how many Watts is ur PSU? for SLI u need at least 450-500W

[RamonGTP]

Unless he's using some really good water cooling, i'm willing to bet its 82C... You'd be lucky to get a CPU to run at 82F and GPU's run considerably hotter. A GOOD quality 400+ watter should be plenty for a 6600GT SLI system.

[vikeor]

whats 82F in C?

EDIT: 27.77C nevermind... impossible for a GPU

well then... we know what the problem is... OVERHEATING!

[slashdash]

The teperature is about 82C. The cards are Leadtek Winfast PX6600 GT EXTREME TDH and I haven't overclocked them, I'm a bit surprised that the heat is so high. I have lite 5 vents in the case ..

[slashdash]

Its's a Zalman 400W with 18 amps on the 12V rail PSU

[slashdash]

I'd better start looking for a cooling solution. To bad I'm out of house fans...

[RamonGTP]

In the meantime, i'd recommend NOT playing any games. You can and WILL damage one or both cards if you keep running them hot enough to artifact.

[slashdash]

Yeah, tnx for the advice. You think I need watercooling? I mean I already have one fan on each card, 5 fans in the case, 2 on the MB, 1 on the CPU. The case is however a sunbeam acrylic case, perhaps I need a case mores suited for cooling.