Never really tested a video card for artifacts etc... But I just picked up an 8800GTX OC.
Brand new, fresh install of OS.
Installed newest drivers from Nvidia
Installed ATItool
Run scan for artifacts and it only runs for 4 sec at the most before it errors. Then it will run a couple more sec. and error. and again, and again, and again.
I let in run for about 60 sec. and it reached 75c, which should not be a problem at all for this card.
When it shows the little yellow pixels and the time restarts, and it says Delta found in pixel blah blah blah (or something like that) That is a bad thing right?
I read that sometimes ATItool artifact scanner sucks, and looping 3dmark is better? Any truth to that?
Sounds like the card is sporting an overclock it cant support.
What to do?
1.) Crank up the fan speed to 50ish, it should eliminate temps from the equation, though they arent bad right now anyway. Just do it.
-If you are still getting artifacts:
2.) Install the 181.22 Vista 32-bit forceware driver to eliminate any driver conflict from perhaps being the issue. The best way to do this is to first uninstall your current display driver, restart in safe mode, run driver sweeper or driver cleaner pro (google these), restart and install the 181.22s.
-if you are still getting artifacts:
3.) Using Rivatuner, downclock the card to stock settings. It could be an error on the part of the manufacturer by mistakenly badging a chip as the OC version when it wasnt high-binned enough or the voltage is too little. The stock clocks are 575core/900 memory.
-if you still are getting artifacts:
4.) RMA. You could also choose to RMA after step 2, because you arent getting what you paid for, which is a stable overclocked card from the factory.
I am actually running this on an XP machine.
Have not tried any games, but am downloading 3dmark06 right now.
will crank fan speed up and test again, then lower the OC to stock and test.
I can't RMA the card as I bought it used.
Reseat the card with AS5, MX2, or OCZ Freeze. I'm betting the gunk they put on it at the factory has seen better days.
Agreed. My bet is that the memory is overheating tho. I've had 3 or 4 GPUs that at around 80c on the mem it'd start to artifact regardless of core temp.
Install Driver Sweeper. Uninstall the Nvidia drivers from Add/Remove Programs. Reboot into safe mode and run Driver Sweeper. Reboot again and install 182.08 drivers.
Totally sounds like the heat problem is from the memory. My 4830 didn't have memory heatsinks and it limited my OC after a Bios volt-mod.
Actually ATItool will almost always artifact with that card. It does with mine as well and after much searching i figured out that there is a compatibility mode in ATItool for older nvidia cards like yours and mine. You just have to activate it then no more artifacts.
This is almost certainly the cause of your problems.
EDIT:
OK go into settings then under atifact scanning you will find the option. Its called "Use older compatibility mode".
Actually ATItool will almost always artifact with that card. It does with mine as well and after much searching i figured out that there is a compatibility mode in ATItool for older nvidia cards like yours and mine. You just have to activate it then no more artifacts.
This is almost certainly the cause of your problems.
EDIT:
OK go into settings then under atifact scanning you will find the option. Its called "Use older compatibility mode".
OK, then why did it not artifact or error when I bumped the fan speed up to 100%? It ran for 30 min like that with no errors.
As for memory problems you all may be right. I can see thermal pad without removing the sink. It looks like they have slid out a little maybe? Or are squished until they are being pushed out the sides. Is that normal?
You will have to use thermal pads on that GPUs ram, the heatsinks do not contact the ram close enough to use just thermal paste. You will have to use ALOT of thermal paste to get it to work. Or you could get an aftermarket cooler.
Just a warning before you remove the thermal pads.
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