I'd like to share my results, I'm not having any problems, but maybe some people can give advice on how to push my system further.
Asus P4P800 Deluxe Bios: 1007
P4 3.0C
2 X 256MB XMS3500
Turbo Mode: On, PAT: Enabled, HT: Enabled
Case: CoolerMaster ATC-201, 4 fans, and everything uses stock cooling
With a 1:1 ratio, the best I can acheive, is FSB: 217, 2-3-3-7-4. PCMark: CPU=7867, Mem= 9009, HDD=1183
Strangely, at stock speed of 200, but with timings of 2-2-2-5-4, the memory goes up 500 points. CPU goes down a little but the total sum of the 3 PCMark scores is greater in this configuration. I still think 217 is better tho. At 217 those are the best timings I can get even if I raise the DDR voltage to 2.75.
With a 5:4 ratio, the best I can acheive, is FSB: 245, 2-2-2-5-4. PCMark: CPU=8940, Mem= 9648, HDD=1257. I had to raise the DDR voltage to 2.75 in order to go past 230 FSB. I have determined this to be my best configuration by comparing them all using the sum of the 3 PCMark scores. It beats the 2nd place configuration by a full 500 points.
My system will not boot at any FSB higher than 245. Any ideas on how to do this? I tried both 5:4 and 3:2, and I tried raising the VCore up to 1.7...going higher on the vcore just doesn't seem like a good idea. I think I'll stick with 5:4 @ 240...possibly upgrade to PC3700 or PC4000 at some point so I can hit a higher fsb at 1:1. I prepared a full spreadsheet of all my scores in 12 configurations but I don't have any place to host it so this is just a snippet of it. Based on PCMark scores, all in all, I've increased system performance by 10% with overclocking, and up 52% from my previous system (P4 2.4B)
Excellent board!!