I'm running my e5200 @ 3.2Ghz with 1.26V ( vcore under load ).
With Hyper 212 - Idle temp is around 40C/44C ( core0/core1 ) & load temp is 56C/58C ( core0/core1 ). But the cpu base temp is 68C under load & 51C under idle. ( Load temp tested by running orthos for 1 hour )
With Stock HSF I was getting the same 40C/44C ( core0/coe1 ) & base temp 54C under idle & was getting 61C/63C & base temp was reaching 75C under load by running orthos for only 3 mins!
Ambient temp is 33C.
BTw, I have not used the backplate provided with the cooler but I had only used those nuts & rubber pads supplied with the cooler ( as shown in many review sites ) & I have not used the thermal paste ccomes with the HSF. I've used my trusted CM nano fusion.
But before put it on test after installing every thing there was a powercut of about 3Hrs. So I think the paste may be not spread correctly & so I'm getting a little higher temp.
Tell me if the temp I'm getting is alright ? Or I should reinstall the Hyper 212 ?
This is your processor.
Now..
1. Were you getting the same temperatures with the OC using stock HSF..?
2. I think your Hyper 212 is working correct. Before within three minutes you were hitting 75C, now after an hour you reach 58C using Orthos.
3. Its all right if you did not use the back plate. Even I did not use it. Will hardly make a difference. Though the back side nuts should be really secure and tight.
4. CM Fusion is fine. It does not have a settle in period. Though how did you spread it on the CPU..?? Most people suggest to put a few drops. But I do not believe in that, cause at times the pressure is not applied correctly (during HSF mount), and it will not spread. If you can -- take a old credit card, or cover your finger with a plastic bag and spread a thin even layer over the CPU.
5. How many fans you have on the Hyper 212. I just have one --- Pull.
6. How is your cabinet ventilation and cooling system -- fans, ducts, spacing, cable management.
7. Could you run it for Prime 95 -- 2 worker threads, and post a screen shot. Keep TJmax = 100.
Overall you seem to be in the safe limit for temperatures, you v-Core is pushing extra into the chips for the OC...so temperatures are up. But do 1---7 just to be sure and have a safe and optimized system.
Let us know..!