Prime 95 vs IBT Different Temps

[MultiMigo]

Hey guys! Quick question, and also thanks to the people that guided me during my build process. 

 

Here's my question

 

IBT and Prime 95 has been giving me different temps lol

 

i5 3570K @ 4.5GHz 1.25V 

 

Prime95 = 86C Max

IBT         = 92C Max

 

I'm sooo confused on which one to follow or which one is the most accurate. 

[porina]

Most accurate at doing what?

 

Prime95 has various versions, various settings, so on the same system you can see different temperatures. For hottest CPU temperatures, usually you want to run small FFT on all threads (HT on). I have no idea how it compares to IBT.

 

Note Prime95's purpose isn't to heat up the CPU as such, it is to do real calculations, when not used as a stress test. It has been coded to be as efficient as they can possibly make it at that job. It is possible different tasks may result in different temperatures.

 

I'd further add, on that Ivy Bridge processor, it lacks more modern efficient instructions so it wont be hit as hard as from Haswell onwards.

[MultiMigo]

1 minute ago, porina said:

Most accurate at doing what?

 

Prime95 has various versions, various settings, so on the same system you can see different temperatures. For hottest CPU temperatures, usually you want to run small FFT on all threads (HT on). I have no idea how it compares to IBT.

 

Note Prime95's purpose isn't to heat up the CPU as such, it is to do real calculations, when not used as a stress test. It has been coded to be as efficient as they can possibly make it at that job. It is possible different tasks may result in different temperatures.

 

I'd further add, on that Ivy Bridge processor, it lacks more modern efficient instructions so it wont be hit as hard as from Haswell onwards.

Nice! Thanks for the reply. Now I know that P95's purpose isnt to heat up the CPU. Thanks!! I see I see.

[SuperCookie78]

prime 95 can over volt your cpu. I wouldn't use it. I use folding at home's stress test