DFI have smashed their own P45 FSB record with a mammoth 693FSB.  The huge overclock was achieved on a DFI DK P45-T2RS Motherboard with air cooling!

CPU-Z Validator 2.1

CPU Arch : 1 CPU - 1 Cores - 1 Threads
CPU PSN : Intel Core2 Duo CPU E8500 @ 3.16GHz
CPU EXT : MMX SSE SSE2 SSE3 SSSE3 SSE4.1 EM64T
CPUID : 6.7.6 / Extended : 6.17
CPU Cache : L1 : 32 / 32 KB - L2 : 6144 KB
Core : (45 nm) / Stepping : C0
Freq : 4161.56 MHz (693.59 * 6)
MB Brand : DFI
MB Model : LP DK P45-T2RS PLUS
NB : Intel P45 rev A3
SB : Intel 82801JR (ICH10R) rev 00
RAM : 2048 MB DDR3 Dual Channel
RAM Speed : 693.6 MHz (1:1) @ 5-6-6-24
Slot 1 : 1024MB (PC2-6400)
Slot 1 Manufacturer : Crucial Technology
Slot 2 : 1024MB (PC2-6400)
Slot 2 Manufacturer : Crucial Technology