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How do I use "Ratio (FSB:AGP:PCI)"?

If you set the cpu fsb to 133-138, you may be able to set the ratio setting to 4:5, if your memory will overclock. Pc2700 memory should have no problems at this setting. With this setting, when your cpu fsb is 133, the memory fsb will be 166. I'm running with the 4:5 setting, and my cpu is 137, while the memory is running at 171.
 
Try 1:1 which would put your memory at 180 fsb. If it won't post, you can try a higher cpu/mem ratio, such as 4:3. I don't know what options your mobo has at 180 fsb, but if it doesn't post, just enable your cmos jumper for a few seconds with the power supply unplugged, and try a different setting. What matters most is how stable your board and memory is with higher voltage settings, and your cooling. I recently used heatsinks on the memory for the first time. Fry's had them for only $5.95. I would limit your memory voltage increase to +.2, even with heatsinks. On my P4 1.6a, I can run the cpu vcore at +.075-+.175 and the memory at +.1- +.2 without any temperature problems.
 
I guess my questions seems to apply to this I have an abit kr7a raid board,512 ddr 2700, maxtor 15 gig ,wd 20 7200. Well anytime I try to go over 150 fsb I totally loose win xp. I have to lower the fsb and re install. Is that because I am pushung this hard drive to fast?
 
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