Barton 2500+ overclocking problems
reelbigfish
Boston, MA Member
Hey guys. I recently purchased a Barton 2500+, Vantec Aeroflow cooler and Shuttle AN35N-Ultra motherboard. I'm running it with Geil PC3200 RAM. It runs fine at all stock speeds. When I overclock it to 10x200 it works fine. It also works fine at 10.5x200, which are 3000+ speeds. At this speed my 3dMark 2001SE score is 15937. When I change the multiplier to 11x200, which is 3200+ speeds and a 100Mhz boost in clock speed, the score drops to 14581. It's faster, yet drops over 1000 marks. Any ideas as to why this is happening? Sandra says the clock speed is higher, and the memory bandwith is still the same. I have no idea.
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Maybe that 11th mutli isn´t showing it´s real value somehow?
Try to set it to 9.5 and run a 3d. The difference between 1 or 1.5 in multi is about 1000 points if i´m not mistaken. Edit, thats more of a guess, but try it. I wanna see if that 11th maybe in reality is something else.
If your memory timings are Cas2 at FSB333 (166mhz) and Cas3 at FSB400 (200mhz) you'll experience a drop in performance.
Make sure you're running at least Cas2 -3-3 timings at both speeds (Cas2-2-2 is better) and retest
True but it dont justify a thousand point loss on a 100 mhz faster cpu.
11x200 - 14562
10.5x200 - 15989
10x200 - 15620
9.5x200 - 15288
very strange. I will have to re-run all the sandra tests to see whats up. Also, my mem timings are CAS 2.5-3-3 @ 400Mhz.
Can you run a 3d on 8.5?, im curious :P
13637. Yes, thats right, another 1000 points lower!
:banghead:
Video driver update?
Also, you said stock voltages. If I'm not mistaken, Geil requires a higher VDD than stock to run PC3200. I'd up the VDD a hair and make sure you're running the most recent BIOS, most recent video driver and most recent 3DMark2001 patch.
Also, did you verify the speed of the CPU with something like WCPUID or CPU-Z?
If this was common, i would have seen this before but i haven´t.