Just check out Intel's Harpertown line for new CPU's. And OWC (macsales.com) is the best place for memory.
----------
I have a Mac Pro 1,1 running 2x 3Ghz dual core "Woodcrest" Processors. I am looking to upgrade the processors, but I have a question about compatibility.
I know I need to get a chip that has the LGA771 socket, but what about TDP? Do I have to stay at the 80W max TDP per processor, or can I increase it to something like 120W or 150W max TDP?
the x5365 has a 150W TDP, and that is a compatible CPU. Also, the x5355 (which I have in my MP) works too.