Memory questions about DDR2-800 and older motherboard

[Tifosi248F1]

I have an Asus P5AD2-E Deluxe motherboard which is based on the Intel 925x chipset. I need to upgrade to 2gigs of memory and I was looking at a set of 2x1gig ddr2-800. The thing is the motherboard supports, to my knowledge, ddr2-400/533/600 with an 800mhz fsb. I was messing with settings in the bios and found where I could choose 800mhz memory but I haven't done anything since I only have ddr2-533 memory in it now.

Here is where I get confused since I'm not much of an OC'er. I know I can have the ddr2-800 run at a slower speed with better timings, but what benefit would I get if I tried having the memory run at 800mhz since the mobo only supports ddr2-400/533/600 with a fsb of 800mhz? Can I overclock the memory/fsb without overclocking the CPU?

I will probably upgrade in a few months, so will I be ok just ordering the ddr2-800 and either running it slower or messing with the bios? I would hate to spend $75 on memory that won't help me out now and have to spend more money on memory for now that won't be useful later.

 

[fire400]

asus boards are usually okay with talkin' with native DDR2 universals just as long as it's not picky XMS or OCZ models. it'll push it back to DDR667 most likely, but can't promise anything, 'cuz if it doesn't boot at all, pretty much you're fvcked. can try flashin' the bios to see if backwards compatibility will kick in.

but manufac. specs say 667 is that max, then that's the norm. I don't see why it won't work, but I ain't promisin' you.

few months only? if you have the money, go ahead and take 667. sell the 667's and get 800 when you do a new build. 2 gigs for under a hundred bucks, now if you're a true enthusiast, a few dollars ain't goin' to kill you.

I think the worse thing ur asus board can do if you try to oc is prolly shut itself down if it don't like it.

I don't see how faster RAM will make your computer run any faster if you're tryin' to OC and not OC the CPU. mite as well leave it stock 'cuz real world performance on a P4, they pretty much all run the same; single core and multi threaded, hot, and does the job for the GHz it's given with stock.

just get another stick of 667 don't waste your money on 800's, look into DDR3 or DDR2 1100+ if you're buildin' an aggressive comp.