58C at full load then should be ok.

I you are only OC to 4GHz, auto is fine.

what cooler you using? Nice temps

Have a few problems here with my sandy bridge system.

*Refer to attached img*

I am currently OCed to 4.2 GHz. I am pretty sure it is stable but I just did the torture test anyway, with the small fft in Prime95.

However I have a few concerns though
1. Why is Core 0 and 3 much lower than Core 1 and 2?
2. The max temperature is pretty high for 4.2GHz, those guys in OC.net can do 5 GHz at 65+'C. Ambient temperature is 21'C now.
3. Also how come the core voltage is so low? I set it at 1.325V in BIOS.

My Spec
i5 2500k
Gigabyte P67A UD3R
Ripjaw 4GB DDR3 1600MHz
Err? Shouldn't you turn off turbo boost and adjust the multiplier yourself in BIOS?
Prime95 won't do any OCing for you

ya it should be normal. the thermal paste
will not have a dramatic effect like 10'c.

well done bro.
I've seen a lot of 4.5GHz at 1.25v-1.3v but depends on chip though.
urs should be just another dud chip but good temps 
Gflops is correct on vanilla win7; SP1 is 100+ Gflops and much more stressful than the vanilla.

---

Added on June 4, 2011, 9:44 pm
dont expect much from TIM replacement it will be more or less in 2-3C difference only.
2-3C improvement is already meaningful for me.