what kind of ram for BD7II-raid

im going to get a p4 1.6a with a BD7II-raid what kind of ram is good for overclocking that will not hold the chip back from overclocking?

Corsair XMS. I run my 1.6a at 160fsb with the rame at 214. Tere may be something out there better but I am not complaining.

i thought it can only use pc2100 how are you using pc3200?

It is just that the 845 chipset only "officially" supports PC2100. DDR is backwards compatible. The PC rating has to do with what speed it is running. The BD7-II has a feature in the chipset that lets you run the ram bus faster than the system bus, at a ratio of 3 to 4. Example = 150fsb / 200 ram, or in my case 160 fsb / 214 ram.

ps. Welcome to the Forums

i dont really understand, can this board use ddr333 or ddr400?

if you only want to run your P4 at FSB100 or FSB133, then DDR266/PC2100 is enough!

but if you want to overclock your P4, DDR333/PC2700 or DDR400/PC3200 will be much better... because with the 3:4-ratio your RAM can run at a higher frequency than 133mhz...

e.g. FSB133 and 3:4-ratio would be RAM@177mhz -> DDR354

the higher you push the FSB, the higher runs your RAM and the memory bandwidth will be higher!

e.g. FSB156 would be 2500mhz (with a P4 1600) and with 3:4-ratio the RAM would run at 200mhz -> DDR400

but a FSB higher than 133 needs faster RAM, DDR333 (166mhz) or DDR400 (200mhz) AND it also depends on your CPU...