Does RAM speed matter

[Jesusthewererabbit]

About a month ago, I had a whole bunch of problems with my computer. It took me a week, but I finally figured out that I had one 1GB module of RAM go bad on me. I have an HP with an X2 6000+ on this motherboard. I am unable to do any overclocking on this system. My main question is: Will there be any sort of performance increase by getting DDR2 800 instead of DDR2 667? Or does it only really matter when overclocking?

EDIT: I'm looking at getting two of these ddr2 8400 or three of these DDR2 667.

 

[0roo0roo]

no difference.
even if you get slightly better timings assuming the board supports it the difference is very small when its just ram.
all that matters is you have enough.

 

[n7]

It doesn't matter much.

Get whatever best priced decent DDR2 you can; the board is going to set everything automatically anyway.

If you don't already have this, get Memtest86+ on a bootable CD for checking stability once you get your new RAM.

 

[Jesusthewererabbit]

Thanks guys! That's what I figured, but I wasn't sure.

 

[error8]

It doesn't matter too much, but an AMD system tends to run quite a bit faster when using DDR2 800 mhz opposed to DDR2 667 or 533 mhz. I would pay 10 $ for those extra 133 mhz, if I were you.