Upgrading x51 r2 CPU to i7-4790k.

I installed a i7-4790k a few months ago with new, good paste but on the stock cpu fan. I have been experiencing high cpu temps while gaming and even on simple tasks. I just wanted to see if anybody else has experienced this and maybe I just have a faulty stock fan or the cpu is just that hot and needs a better fan. I did the test is bios on the cpu fan and it fails however if I turn on the computer and just download stuff or have multiple windows up, the cpu does not spike in temp and I can hear the fan running so I'm pretty sure the test/drivers are outdated. If anybody can give me some insight on this, I would greatly appreciate it.