The image above shows the HP Mini 311's Geekbench results while it camouflages as a MacBook5,1. As you well know, I've been experimenting with various MacBook models to see which ones work with vanilla AppleIntelCPUPowerManagement.kext + HPET + P-States in DSDT; in short what the current HP Mini 311 Darwin Project uses. It has been reported that MacBookAir1,1 just won't work with this setup and MacBookPro5,1 (current HPM311DP default) and MacBook6,1 (theproto HPM311DP default - before vanilla AppleIntelCPUPowerManagement).
MacBookAir2,1 as I've mentioned works, albeit with a noticeable limitation - no SpeedStep, but works nevertheless compared to its sibling the MacBookAir1,1 which won't even boot up the system; i.e. Kernel Panic galore.
However, by running Geekbench on some MacBook models I've been testing, another "anomalie" as the French would call it, appears to be distinctive to the MacBookAir2,1.
It gives a much lower Geekbench result than any other MacBook model. Almost cuts the score in half! All the other models could easily surpass the 1000 score mark, but the Air2,1 tops at 666 and hitting its lowest at 613 (it's one devilishly poor score alright)
See my Geekbench results page for more details. And P.S, I think I do have the sense to make sure Geekbench was the only app running during the tests. :-)