Encryption Messing with Temps

So just recently I was running a encrypted backup for my PC. It was going incredibly fast at around 200mbps, however my temps were strangely high at around 70C but my AI suite 3 only registered 35C. I know that the AI suite uses socket temps and it will be off no matter what, but it has never been off by that much.

Also, core temp showed a load of 50-70+ while task manager showed 90%. Could core temp be off? It's the only real CPU monitoring software I use.

Why is that happening? This is the first time I've ever seen this before, and it's only acting this way when encrypting. If I put it on a stress tester, everything works perfectly (temps stay at 60C or lower).

Specs:

I5 4690K @4.5Ghz 1.235v.
Z97-A
H105 (pump @ 1770RPM, fans @ 750RPM (fans should of been going faster automatically though at that temp))
450D case (All fans at roughly 500-700RPM, total of 3 case fans)
 
Solution
The encryption might be hitting the FPU a lot more than the stress tests do. If it's a complex algorithm, could be just really working parts of the CPU. Like when I was using IntelburnInTest for overclocking testing. CPU's maxed at 100%, temps at say 60c, but increase the size of the test pool from 1MB to 2MB and still same CPU at 100%, but temps go up 10c. Same with doing things like prime. Increasing the size can dramatically increase the complexity and work the CPU or parts of it, that much more.
The encryption might be hitting the FPU a lot more than the stress tests do. If it's a complex algorithm, could be just really working parts of the CPU. Like when I was using IntelburnInTest for overclocking testing. CPU's maxed at 100%, temps at say 60c, but increase the size of the test pool from 1MB to 2MB and still same CPU at 100%, but temps go up 10c. Same with doing things like prime. Increasing the size can dramatically increase the complexity and work the CPU or parts of it, that much more.
 
Solution


That would explain it then. Thanks.