Hi guys, I'm building my first Athlon 64 next week - and I have a question about 800FSB. The basic spec will be as follows: Athlon 64 3000 (retail) Skt 754 MSI K8N Neo Platinum (NForce 3) 512K Crucial PC3200 My question is, as the CPU has an 800Mhz FSB - will the RAM need to be installed in matched pairs to run at this speed? The motherboard claims to only support single channel unregistered DIMMs. Crucial tech support claims that 1 PC3200 module will suffice - my previous experience and knowledge of DDR leads me to think that this ram is only good for 400Mhz. So what's correct? And can anyone explain the maths (simply) for me? :haha: Thanks for your time! Rich.