I hate long period of prime95 runs it's not a good idea to load CPU with 2-3 hours prime95... (sorry, that's just my opinion) and btw it shows us, if a system stable or not...

E8600 @ 4665 MHz 24°C ambient CPU/NB Watered
Q820A627/E43453-001/07-24-08
VCPU 1.47 VNB 1.45 Load (CPU-Z VCore is buggy with BlackOps)