I have bought Intel 630 Pentium 4 HT 2Mb L2 800MHz LGA775 prescott Processor, Kingstone 512 MB 400Mhz Ram, 40 Gb Seagate baracoda 7200RPM HDD, MSI 6600Gt NX6600Gt TD128E SLI pci-e. I have selected ASUS Motherboard P5RD1-V http://www.asus.com/prog/spec.asp?m=P5RD1-V&langs=01 I want to ask that does this mobo support EM64bit tecnology? Does this mobo support all my purchased items? I have one more option Buy ASUS P5RD1-V or Intel D915GAV ? Intel Motherboard D915GAV http://www.intel.com/design/motherbd/av/index.htm Does D915GAV support both EM64T and Enhanced Intel speedstep technology?