Timing Issues with X58 Chipset? Please Help Me Test!

[Pyr0]

I've just been playing with this test on my UD5

It seems to me that on my system, HyperThreading is causing the relative rate to be incorrect (starts to jump after around 10 seconds or so)
If i disable HT in the BIOS (either at stock speeds or overclocked), then the test runs just fine and the relative rate is correct and remains steady

HT On:


HT Off:


edit:
just noticed something in the screenshots from loonym and tot31, but not sure of the importance...
the average rates are shown as 4.6 and 2.8 fps and there are some dropped frames