3DMark06 score (@ default settings): 17,420 (click on the score in my signature for the ORB compare chart)
Important system info:
EVGA 780i Rev. A w/ FSB @ 1600Mhz QDR
Q6600 g0 @ 3.6GHz
2x EVGA 9600GT SC in SLI @ 740/1100Mhz (linked shaders)
2GB OCZ ReaperX HPC Edition PC9200 DDR2 RAM (2x1GB sticks @ 800MHz & 5-5-5 CL)
72GB WD 10K RPM Raptor HDD
Windows Vista Home Professional 32-bit OS w/ SP1
*All air cooled* TRUE-120 for the CPU, stock cooling on the 9600GTs and motherboard.
Ambient room temp of ~82*F
w00t! Looks like the SLI Nvidia 9600GTs are putting a slight hurting on the ATi HD4870s, even when installed on a faster PC (at least in 3Dmark06 anyway)! LOL.

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Ultra M998 mid-ATX case
SilenX 650W 14dB SLI Power Supply Unit
Nvidia/EVGA 780i tri-SLi motherboard
Intel Q6600 quad core @ 3.4GHz (3.6 for benchmarking)
2GB OCZ ReaperX HPC Edition PC9200 DDR2 RAM (2x1GB)
2x EVGA 9600GT SC in SLI (750/1100Mhz over-clock)
2x WD Raptor HDD (1x 36GB; 1x 74GB)
Samsung Spinpoint HDD (250GB)
Thermalright TRUE-120 w/ dual 120mm fans in push-pull config.
Windows Vista Home Professional w/ SP1 (32-bit)
Samsung SyncMaster 206BW 20" LCD display (1680x1050)
3DMark06: 17,420 Points