I just built a computer with an FX-8320 in it and a Cooler Master Hyper 212 Evo to keep it cool. I wanted to overclock it so I ran prime-95 with the stock clocks and within 30 seconds AI Suite said it was over 65C! I let it cool down and tried again thinking that maybe the thermal paste needed to heat up or something like that. Within a minute it was over 85C, then it shut off... I tried spreading the thermal paste a couple different ways and nothing has helped. Any thoughts? Thanks!
First off, one does not spread the thermal grease. You let the mounting pressure and heat spread the thermal grease. If you spread it before mounting the heatsink, you introduce air-bubbles and air is not thermally conductive at all, and it defeats the purpose of thermal grease if you have air-bubbles.
Are you sure you have the heatsink mounted properly? It sounds like it's not seated properly.
My gess is a crappy mobo and you are reading the socket temperature as 85c core temp will fry a FX 8320 and you shudent use prime-95 with AMD FX cpu's the program pulls far to much power than it is supposed to prime is a very old out dated program and is not coded for newer cpu architectures.
I love how people quote prime as being a bad torture/stability test by stating it over-stresses the CPU - THAT'S THE POINT!!!
People use Prim95 to find out the absolute worst case scenario, and if a CPU can break normal operation perameters under ANY load, including in Prime, then that CPU is NOT stable.
I use Prime all the time, and the FX-6300 is just fine. So is my 2500k even at 4.5GHz.
I've been overclocking mine but I'm using the corsair H100i and I've had no issues, max temp is around 45c. Maybe just look at a better cooling solution.
Mine hits 65 degrees during AIDA at 4.5ghz and 57-58 at 4.4ghz stock voltage and that's with a hyper 212 with the fan blowing down on the gpu,so there's not much room for the vent to drag air and push it on the heatsink. The cooler is good. something else is wrong,It's either a bad mobo or air bubbles in the thermal paste
The Mobo or a default in the chip is likely the culprit. I have a ma99fx pro R2.0 motherboard with the 8320 and I can OC up to 4.5 and run prime for 30+ mins under 55C.
I've also heard my chip could also be a dud as well, I have tried a couple other programs to stress it with the same result so it isn't prime95s fault either.
Could be the motherboard that is struggle to keep the voltage stable, on that powerhungry 8 core. The Asus M5A97 R2.0 has only a 4+2 powerphase and digi vrm, this is a bit lack for a powerhungry 8 core cpu. Don´t get me wrong its a decent motherboard for an FX6300, but basicly not realy designed for an FX 8 core cpu.
Make sure you read all of the directions that came with your CPU cooler and have it installed properly. If new thermal paste doesn't fix it then (just like everyone else said) your motherboard or CPU are probably faulty.
Well, I have my 8320 OCed out to 4.5 ghz at 1.4v on an ASUS M5A99FX Pro 2.0 with that same 212 EVO. The rig is completely stable until I run a prime number generator like prime 95. It just nukes it for whatever reason on my rig as well.
All other benchmarks run fine and the CPU handles them normally, Prime 95 makes the temperatures climb super high super fast for me.