I recently bought a new Galaxy Geforce 9500 GT card to replace my old fx5500, i also have an ASUS P5KPL/1600 motherboard with 2 gigs of RAM and a single core, Pentium 4 ,3.2 ghz CPU.
I installed the new video card but now my pc acts very strange, the performance is...hm...unstable. I tested a lot of games (Fallout 3, Crysis, COD4, Mirror's edge, Mass effect) with both highest and lowest settings, it doesn't really mather, the problem is the same: i can play the game for 2-5 minutes perfectly, without any slowdown/freeze with constant FPS rate, but after 2-5 minutes the game slows down and starts to lag to a point where isn't playable at all. When i close tha game and restart it, i can play it again for 2-5 minutes.
I installed the latest drivers, the latest directx, i tryed to disable/enable PhysX support in may card, i defragmented my HDD, reinstalled windows (XP), enabled/disabled HyperThreading in my cpu but no effect... I also checked the temperatures when playing, CPU: 50-60 deg, GPU: 60-70 deg, motherboard: 50 deg, i think that's OK. I also checked the voltages with the SpeedFan apllication: Vcore: 1,34-1,47 V, GPU: 11,7 - 12 V.
I really appreciate any kind of tips/ help, i really don't know what to do... :| Thanks
When the CPU reaches a certain tempertaure it slows itself down, a process called 'throttling'.
Without the exact processor number I cannot say at what temperature it will throttle, but it seems to me that is possibly your problem.
Pop the side off the case and take a look.
And run the system with the side off for a while you play a game and monitor the temperatures, see if it makes any difference.
Not yet, just check it and see if it is blocked!
This may not be the problem and even if it is, you can clean the dust and fluff off with a toothbrush if you are careful.
Also can you give us the details of your powersupply: Maker and model or amps on the +12v output (this is on a label on the PSU, you will see it when you take the side off to examine the CPU cooler).
I checked the fan, it's working and it's clean, i usually use compressed air to clean it periodicaly. I also checked my power supply, i cant find the maker's sign, i think it's a noname stuff I founnd this on the label: