Underperforming GTX 760

[TheMissingLINX]

I had a HD Radeon 7790 and would play planetside 2 on medium graphical settings and would avhieve a good 70 fps in large battles or higher if i was playing on low. But I managed to fry that due to OC'ing while playing planetside 2. I then bought a GTX 760 which should outperform the 7790 by a good amount and found that whether i was on the highest, lowest graphical settings i would get 5-30 fps in large battles and about 40-60 in a completely un-populated area.

Drivers are up to date. I upgraded from windows 7 to 10. I have messed around with Nvidia control panel settings, I have benchmarked the gpu using Unigine engine on ultra settings and it scored 889, min fps: 7.6, max fps: 85.8.

I am currently running i5 4670 3.40GHz cpu and during gameplay its usage is at about 20-30% but may sometimes jump up to 70-100% for a few seconds. I am also running 8GB of ram.

I cannot, for the life of me, figure out what the issue is. I am lending my 760 to a mate this week so he can see how well it runs on his system, just incase i bought a fried gpu. However it's highly unlikely that it is fried due to the benchmark score, i feel i've done something wrong.

[OpolE]

Without even thinking to much - Is your Graphics card in the top slot on mo bo? Cos I messed that up lol

[TheMissingLINX]

yeah it's in the top slot, however i have an idea as to what the problem is. My CPU temps according to SpeedFan are around 60-70 degrees Celsius and on CPUID HWMonitor each core is at about 100 degrees Celsius. I will be getting some new thermal paste and then come back and say whether it worked or not.

[TheMissingLINX]

It turns out i needed to replace the thermal paste. I haven't replaced it yet, but just by cleaning a little bit of the old paste off the CPU, it dropped 20 degrees and fps went sky high.