Way to high temps with water cooling

[dilvil5216]

Hello, I'm new to water cooling and I think something is very wrong. I'll admit I may not have the best set up, but with an AMD A10 7890K APU it runs pretty hot no matter what, and I may have been on a super budget when making the rig, with the most generic 120mm radiator, A $15 water block, and a mayo jar as my Reservoir. But I'm getting idle temps of 75° - 81°c and I know that's not ok. Anyone have any ideas on a fix? I used a good amount of thermal paste, tightened down the screws, Sped up the pump etc.. But nothing helps. Help me Toms Hardware, your my only hope

 

[dilvil5216]

UPDATE TO THE POST, I used 3 temp programs and they all said 80°c, I restart and go to bios and see temp of 47° and I have a warning in place to let me know when it gets over 80°, so what do I believe?? 3 separate programs or bios

 

[mdd1963]

Check AMD Overdrive for accurate temps...