HELP overclocking 820 & P5WD2 doesn't work

[steveeb]

I have had this same problem from the DAY I put this thing together and I still can't figure out the problem :bang head

HELP!!

Setup:

P5WD2-Premium (latest bios)
Intel 820 D
BFG 6600GT OC
Win2K

I have stripped my computer to bare bones. In fact the motherboard isn't even in a case (that's another issue for another thread).

Whenever I overclock this board to ANYTHING OTHER THAN STOCK, about 60% of the games as well as apps like 3DMark06 DO NOT WORK RIGHT :bang head

What happens is when I run a game such as FarCry or GTA VC, the graphics run extremely jerky - making them impossible to play! Remember this is only if I set the FSB to anything other than the stock 200. I have set the PCI Mode to 100, and PCI Freq to 33.3 like some have suggested, but it didn't help.

The ONLY way I am able to play anything if my system is overclocked is to launch the game, alt-tab, and set the affinity to a single core. That's the only way.

I even tried a brand spanking new Gigabyte 6600GT and it does the same thing so I know it has something to do with either the CPU or motherboard.

I really need some help solving this problem once and for all. My next step is probably going to be swapping out CPU's but I want other peoples opinions first.

Thanks.

[proth]

I woulda bet it was the video but you changed that so maybe your CPU is getting too hot and it's throttling back. I would have thought the frame rate would have gone down but not jerkey. Have you tried the latest versions or DirectX?

[steveeb]

I'm running DirectX 9.0c. I also have Forceware 83.05, but I've tried at least 6 versions and it doesn't make any difference.

The video card is not overclocked at all.

[steveeb]

The CPU is nice and cool (around 45C) and the video card temps are in the mid 50's so I don't think it's a throttling problem. I'm thinking either mb or cpu and leaning more toward mb.

[steveeb]

Ok, I did it... I swapped the 820 for a 640 and o/ced it to 4.0ghz. The games ran as smooth as silk. So it's pretty much linked to the dual core which I already knew since I had to set the affinity to get them to work right. :shrug:

[larva]

Maybe Win2K?

[steveeb]

Off I go to install a dual boot W2K / XP setup. I'll let you know.

[steveeb]

Well, it appears that larva hit the nail on the head. I had tried EVERYTHING except changing the OS. Upon larva's advice, I quickly installed (dual boot) XP home (I've had a copy for years just never used it) and ran windows update a few times to get it to SP2. I installed BF2 and fired it up... SMOOTH AS SILK!!

So after all that, it was Windows 2000 Pro that was giving me the problems. Next I need to wipe my drive clean and start over with a fresh copy (I'll be getting XP Pro). When that happens, all should be fine.

Thanks Larva for your help! :)