I tried to update my signature with a few more details but I haven´t figured it out yet with the new form.
Asus P5B (Vanilla)
The Prescott processor and Gigabyte heat sink are the only things that haven´t been upgraded from a system I built 2 years ago. The board I bought not too long ago because it was cheap and stable. I can wait a year until the newer and better boards have the bugs worked out (and I have more money). I can´t wait any longer for a new processor. I updated the BIOS yesterday.
Here is some more info from Everest:
CPU Type Intel Pentium 4 530J
CPU Alias Prescott
CPU Stepping E0
Engineering Sample No
CPUID CPU Name Intel(R) Pentium(R) 4 CPU 3.00GHz
CPUID Revision 00000F41h
CPU Clock 3373.3 MHz (original: 3000 MHz, overclock: 12%)
CPU Multiplier 15.0x
CPU FSB 224.9 MHz (original: 200 MHz, overclock: 12%)
Memory Bus 449.8 MHz
DRAM:FSB Ratio 12:6
L1 Trace Cache 12K Instructions
L1 Data Cache 16 KB
L2 Cache 1 MB (On-Die, ECC, ATC, Full-Speed)
Motherboard ID 64-1501-000001-00101111-062607-Intel-BW$A0545000_BIOS DATE: 06/26/07 16:11:44 VER: 08.00.12
Motherboard Name Asus P5B (3 PCI, 3 PCI-E x1, 1 PCI-E x16, 4 DDR2 DIMM, Audio, Gigabit LAN)
aevm already posted the right answer. Unless Asus tech says that the board, with BIOS update, will support Q6600. At $266 after price cut (lot price I think), it's so cheap you might want to consider it. The additional cores won't be fully utilized in most apps for a while, but the software guys are working hard toward that end, so it won't be too long.