I have a Soltek SR75DRV5 mobo, it supports ddr333, and my ram is pc2700 ddr333 cas2. I have an AMD xp2000 processor. to get it to run at spec, I set multiplier to 12.5 and freq to 133, but then I am running my ram at 266 right? if so, do I set multiplier to 10 and freq at 166 to get ram to run at 333? And is this the correct setup, or am I OCing the ram? Are there voltage settings that need to be changed? Thx for ur input...

yes, 133*2=266 you can't change the multiplier lower than 12.5 unless your CPU is unlocked. in case if your cpu is unlocked and you want to OC then try to change the multiplier to 11.5 or 11 and the FSB raise it up to 170-18x instead of setting 133 or 166. if your FSB is higher than 166 then you have to change the divider from 4.2.1 to 5.2.1.... in this settings mean your RAM is working harder than your CPU. the multiplier is higher than 11.5/12 means your CPU is working harder than the RAM get the multiplier time the FSB = your CPU speed 12.5*133=1662.5

Edit.. if you OC too high then you need to raise the voltage up a little. higher voltage = cpu hotter. may be you need to raise the voltage of your RAM a bit higher too. just playing around your PC you'll learn more.. setting from lower to higher and find a stable speed for you

My dips on mobo allow for 5.5-12.5 in 0.5 increments, and my mobo dips also allow for cpu external freq | PCI Clock | FSB Clock A) 133.3MHz | 33.3MHz | 266MHz B) 140MHz | 35.0MHz | 280MHz C) 150MHz | 37.5MHz | 300MHz D) 166MHz | 33.3MHz | 333MHz And my bios has RedStorm OCing, and allows to upping the pci clock 1MHz at a time. Thus, I can change my freq and multiplier without unlocking the CPU right? I did have it running at a lower multiplier before... but not at a freq above 133.

OK... here's what's going on... Will not boot unless multiplier is 12.5 I do have external freq set at 150MHz via dipswitches. processor showing 2100, so it's overclock 100MHz. FSB set to 140MHz (highest stable boot, 280MHz effectively). I guess what I don;t understand is... I thought the FSB was the external clock freq. Is it or isn't it? If so, if the only way to get the ram to run at 333 to unlock the processor? If so, isn;t it kinda bad for mobo and ram makers to EXPECT that people are going to unlock their processors? I don;t mind fiddling with this stuff, but alot of amateur builders won't, and it's misleading to represent that performance capability as easily attained.

http://www.overclockersonline.com/index.php?page=downloads Go here and download free SISoftware Sandra and make sure your chipset doesn't adjust for your memory clock. Mine does KT400...When I'm at 133 on the fsb my memory still shows a clock of 333mhz. When I increased my fsb to 147 my memory showed 347mhz. When I adjusted my memory clock to 166 and maintain my fsb at 147 my memory clock showed as being 368mhz. Go figure? I beleive show chipset automatically adjust; so my best suggestion would be go download the software; it's free; and verify what you got before and during each adjustment!

Hey!!! I found the problem! The F**KING A-Holes at BuyAIB.com put ddr333 pc2700 on my invoice, and sent me 266! And guess what else... the SOB MF-ers are charging me to send it back! And they won;t even do a cross-shipment, so I have to order new ram and pay, and then return my old for a refund! Guess who needs to die... that's right boys and girls... the MF-ers at buyAIB.com.