Re: can i combine 1066 speed ram with 800?
Yeah, if you want more RAM, and you add an 800 stick, it will all run on 800mhz, which isn't a big difference from 1066 though. But you might just want to make sure you really need 6gb ram. Note that 6 gigs of ram won't help for gaming or benchmarking, or any normal usage. The only places I see it necessary is in any sort of editing (video, sound, photo). Even if you're extreme multitasking 4 gigs probably won't hold you back.
||Core 2 Duo E4600 @ 2.4 GHz (OC coming soon) || Biostar TP45HP || 4GB Kingston DDR2 667 RAM ||
Sapphire HD 4670 512mb @778/1140 || Antec Trio 650w || Maxtor 250gb 7200 RPM HDD || Lite-On DVD-RW || Black Aluminum Case||