Yeah, it's fine on my E6600, P5W DH, and GSkill HZ Ram.

Chipped clocked to only 3.33gig (370fsb 1:1), watercooled, and when using TAT thermal testing tool, temps stabilize around 47 deg C core 1, and 45 for core 2.

TAT reads 1 deg C lower on both cores vs Coretemp.

Very nifty little app, thanx Intel

Orthos will only take temps up to around 38-40 on water, this is quite a bit more intensive. Good stability checker I would say.