I've been looking around on the net for a few days now for a solution to my 4GB ram problem on the P5N32-E SLI. I just couldn't get my system to P.O.S.T at all untill I removed one of the sticks (Corsair 6400)
So after a lot of faffing around I spotted amongst all the great info offered here
(sorry can't find the post again now) somebody mentioned underclocking the mem to 667MHz which I proceeded to do... Wehay it worked
4GB operational apart from the obvious vista access issue
After that though I noticed the system reponse was a little slower, in fact almost as slow as my older Asrock Dual VSTA
so I proceeded to fettle further.. And just incase it may help anyone esle with headaches over the 4GB ram issue on the P5N32-E SLI here is what I set in bios to get me past the P.O.S.T and into Vista.
Everything on auto apart from my fan settings and the following..
AI Tuning - manual
FSB Memory Clock - Linked
FSB Memory Ratio - 3:2
Timings to 18.104.22.168 and 1T
With the above settings my mem is now running at 711MHz which after some reading I think should be better for the NB?
Also had the CPU up to 2.92GHz with 1:1 ratio and It will go loads further, It really fly's with those settings however I don't really want to fry this thing yet as its brand new and only air cooled.
It seems this Asus mobo is very picky over how it works with different settings, especially because when I first got it I thought it was a waste of money as it didn't seem to perform how I expected. However after a lot of reading and hopefully plenty of learning from you guys I now have a system that is much faster than my older one and is a little more future proof.