Currently running 4.2GHz with Turbo/SpeedStep/HT all enabled. So Turbo speed ends up being 4.4GHz, which seems to run until the temperature hits 75C, then it backs down to 4.2GHz.
The BIOS settings are as follows:
BCLK: 210MHz
DRAM: 1683MHz
CPU Voltage: 1.38125V
PLL: 1.96V
QPI/DRAM Core: 1.3V
IOH: 1.3V
ICH: 1.1V
DRAM Bus: 1.64V
Load-Line Calibration: Enabled
CPU Differential Amplitude: 900mV
RAM Timings are stock, so 7-9-7-24-1N

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3DMark06
ORB - Compare
And to compare to my old X3350 @ 3.4GHz, and the HD4890 at the same clocks:
Summary: SM2.0 went up ~1000 points, SM3.0 went up ~1500 points, CPU went up ~1300 points. Now of course the drivers are different too, and my X3350 benchmark was done under Windows 7 RC. So some of the point differences could be from that as well.
SuperPi
Summary: 1M came in at 9.295s and 32M came in at 8m 32.571s. Unfortunately all I have to compare to my X3350 is 1M, which was 13.730s, so it's a fair bit faster now. Don't have any saved 32M runs though.
wPrime 2.00
Summary: 32M came in at 5.891s compared to my X3350 which did 11.520s. And for 1024M the i7 did 178.915s (~2m 58s 54ms) compared to my X3350 that did 6m 4s 90ms. Quite the difference here.