Mad Shrimps posted an article about Athlon 64 Memory bandwidth.

excerpt:

Do you need high speed memory to have the fastest A64 on the block? We don´t think so, we think having memory faster then PC3200 is overkill and does not improve real world performance one bit. We put our money where our mouth is and prove that Gamers don't need expensive memory to enjoy fast Athlon 64 performance.