Turn HT off, 3dmark doesn't need 8 virtual cores. The higher oc will give you a better score. You may also want to loosen your ram timings and see if you can push your blck higher to boost your CPU. Also if you have load line calibration or something similar make sure to turn it on.
Which 470s do you have?
Well, actually benchmarked before @4.0 HT Off and was getting scores of about P8800 so I guess 3DMark 11 uses them all (probably CPU and combined tests, Vantage also gave me better CPU scores with HT on)
I have tried a lot of things to get a better OC out of the CPU (more voltage -as I have a high 1.38V Vcore right now-, lowering RAM timings, lowering RAM multiplier, etc), but it wont be stable past the 4Ghz mark, although it boots up to 4.2 Ghz. Probably I should mention I got this processor right after they launched in Nov 2008 so they are C0 stepping (D0 stepping Nehalem came in 2009 and they DO overclock better). And yes, LLC is always enabled
As for the GPUs, they are Galaxy 470 GC, which have a custom cooler and PCB design and have like a 10Mhz factory overclock. Same as with the processor, they become unstable past the 765Mhz and the overvoltage (1.087V) is as high as I can go to keep acceptable load temperatures.
As far as benchmarks goes, I've found my system to be about as fast as a stock 480/570 SLI system, and I'm really thinking into changing the SLI cards for a single 7970 (heavily overclocked), besides the simplification of going to 1GPU and power savings I think the raw power will be about the same