p5b Deluxe and DDR 800

[wgoldfarb]

I am about to start building my first system. I am using a P5B Deluxe with 2Gb of DDR2-800 RAM. The ram has CAS Latency of 4 (This is the RAM I am using).

The manual for the P5B says:

"Due to chipset limitation, DDR2-800 with CL=4 will be downgraded to run at DDR2-667 by default setting. If you want to operate with lower latency, adjust the memory timing manually"

er... what, exactly, does this mean? Will my RAM be running below its rated speed? If I want it to run at its rated speed and latencies, what do I need to do?

As you can tell I am a complete n00b at this, so please be gentle!

 

[Xvys]

That seems very odd. I have DDR2-800 with CL=4 and it never downgrades nothing. With default setting enabled my ram always runs 1:1, except perhaps below 400FSB when 4:5 divider may be applied with some ram. Possibly the manual is a bit out of date and newer bioses have improved the memory control? Not sure, but my comp. runs stably and cool at 480FSB with the ram automatically running at 960Mhz at default timings. Timings could then be lowered manually.

 

[Regalk]

Unless if the chipset has been revised to a newer version - but yes that is strange - I believe Bios is not configured properly - cpu config settings or memory. Use the lates BIOS and do a search for bios settings which I and others posted

 

[wgoldfarb]

Xvys/Regalk,

Thanks. I guess I will just try it and see what happens.