Redneck5439 :
SkyMembrane :
Victor0317 :
The problem must be the airflow isn't good... I have no front fan though. So that should be the airflow problem. I'll wait until the H80i arrive and install it, cuz it'll pull the air out of the case through rear fan, should not left any heat in the case anymore, will that helps? i'm thinking about get 2 more fans for the front fan, my case is antec 1100 v2 so it doesn't have front fan and side fan included, i got the 2 side fans already but the front fan should be the problem. Also, NZXT Respire T40 is pushing the air up to the top fan, and between the heat sink and the top fan has a really big distance, and it flows not really good (top fan is pushing air out of the case). I think the top fan only helped a little
Next friday, the H80i will arrive, i'll see if that helps
I can hardly see the airflow being the only problem here. You might want to run Prime95 while monitoring your CPU temperature with a program like HWmonitor64, but you MUST stop the test immediately if you see the temperature go above 75 degrees celcius.
Also, did you order the H80i or the H80i GT? The latter has a bigger radiator and offers increased performances. I disagree with what Redneck said, depending on the situation, a H80i can make a huge difference, since it comes with 2 fans that you can set in a pull/push pattern. This will help your entire build's airflow if it's already as bad as it seems to be.
Stop the test if it goes above 62 C. 70C is the max thermal for FX processors and at 70C or above you can do damage to your processor. Also if his system can't run Assassin's Creed Unity without going to 80C then it sure as heck can't handle Prime 95 for even a minute of testing. Your begging for a melt down running Prime 95 on a system that can't handle playing Assassin's Creed. Also I have build many systems, both Intel and AMD, using all available CPU heat sinks you can imagine (I have a business building custom computers and repairing computers). The H80i simply has too small of a waterblock to make any improvement over the Hyper 212 EVO, in fact a 212 EVO with push pull configuration has better cooling ability. It may have a slight improvement over the NZXT T40, but its not going to be much, it won't be a game changer. By even trying it you may not be able to exchange it for a cooling solution that would actually be a real upgrade.
Did you think about the fact that he may be on a budget? I know the Hyper212 EVO is an amazing CPU cooler for the price, but the NZXT T40 has very varied reviews depending on the user. It seems to really perform incredibly poorly when the case has little to no other fans helping it out. A stock FX-8320 with the stock cooler doesn't go as high as 70C when playing AC Unity, so he must have a problem somewhere, and there's no way Airflow is the only issue. It's one for sure, but poorly applied thermal paste and possibly defective cooler unit are very likely options. I forgot a part of the message, I wanted him to check how long it takes until the CPU reaches a higher temperature. If it goes straight to 60-70+, then something is definitely wrong with the set-up. I'm personally very conservative with my CPU temps, so I wouldn't use a computer that CAN reach 80C in any situation, let alone game on it. 75C is dangerous, but not if it's stopped within a couple of seconds.
But listen to him, stop it at 62C to be safe, don't risk it. The FX-8320 was born overheating, so it's not surprising that you get high temperatures, but 80C is ridiculously high, even if you were stress testing.
How hot is the room its in? A room temperature that's too hot may also be PART of the problem, although it doesn't explain the max temp.