Running 4.8Ghz might be top spec on air, considering the heat.
CPU: 4x4.8 Ghz (BCLK 100)
Cache: 4.6 Ghz
Dram: 2.4 Ghz (on my rig - fastest because of better timings)
Benchmarking with this spec.
windows 8.1
Memory Team Group Xtreem LV CL9-2400 (XMP - no adjustments)
3dmark11 physics score
4,8ghz ; ~12560
Intel Extreme Tuning Utility hwbot bench
4,8GHz ; ~1241 (link)
Wprime 1.55
32M 4.9s
BIOS SCREENS: