Last week I got you guys to help me with a new video card to balance out my system as my 8800GT bit the dust (will bake it next weekend) here: 
http://forums.anandtech.com/showthread.php?t=2054902 
Rig: Gateway FX 7024 ( no overclocking)
Core 2 Quad Q6600 (2.40 GHz) 
Intel G33 Chipset
3072 MB DDR2, 667 MHz, (PC2-5300) dual channel memory
500 GB, 7200 RPM, SATA II hard drive
XFX 5770 1gig
400 watt Power Supply
GEM 19" CRT (playing @ 1280*960 rez)
Vista Home Premium 32bit
I went ahead and did a fresh reformat and install of windows (install I had was over two years old) in anticipation, however I'm pretty sure this new xfx5770 is not performing up to par. In 3dmark06 my SM scores are simply too low. Now, my cpu score seems right running around 3300, which from what I've read is good for a stock q6600. On the other hand my average SM2.0 is only 4920 and SM3.0 is only 6150, getting about 12500 total score on average. Everywhere I go I see this card performing around SM2.0 6500 and SM3.0 7600 (15000ish total), and yes, even with slower procs. 
Also Crysis is not running any better than it did with my old 8800GT, (hovering around 30fps) and before anyone yells my proc is holding me back, I know it is a little at that rez. The fact remains though that Crysis is highly GPU dependent and I SHOULD have gotten a good measurable increase in performance. Atleast more than nothing. I'd like to know what you all think before I try an MRA?
Here is what I've done so far. Two full installs of Vista, All drivers are up to date, tried multiple ati drivers, GPU-z shows everthing is good with ROPs and clock rates, PCIe is running in 16x, Temps are good, found atleast one other person with the same unresolved problem here: 
http://forums.pcper.com/showthread.php?t=468619 Been doing this crap all day.
Got it from Newegg, should I send it back?