CPU tg MAXING In prime95 ??

[Awkward Turtle]

I'm in the process of building a new itx pc and My 6700k temp at stock speeds while running prime 95 shoots up to 100degrees C after like 15seconds..

I've tried 3 different CPU coolers all fitted properly with the right pressure and thermal paste contact. I'm using Real temp for monitoring software. 

Also the idle temps are perfect at 25Degrees @ 22degrees ambient temp

 

As you can see in the pics I've got a very beefy triple fan tower heatsink on it and when "it supposedly hits TJ max it's barely even warm".

I think it may just be a faulty temp probe on the CPU perhaps or the realtemp software? Help would be appreciated cheers.

[Cyracus]

prime95 is ridiculous, use something like IBT/linpack or realbench. Every time I see someone mention using P95 they're complaining about ridiculous temps like this

[martward]

If you only get these temps in Prime95 then just ignore it. Try Ida64 or some other testing software.

I have heard people saying that it has something to do with Prime95 actually causing more voltage or voltage spikes or something (I don't remember and I don't know much about it).

[Lays]

Yea that's not right.

 

Something is wrong with your mount I think, there's no reason you should hit 100c.

 

 

At 4.8 @ 1.38v I only hit like 60c, so something is wrong. (Although I have CLU and a delid)

 

[Nord]

Blaming prime95 for a temp increase of 75° in less than 15seconds is just plain wrong, literatly everything else is more likely. Especially when the OP states that the heatsink is barely even warm.

Yes prime95 is old and probably a bit outdated but its the oldest, well knowen and probably still most used CPU-stresstest there is. I mean hell, its around since 1996 and still being updated.

 

 

@Awkward Turtle

I'd try different temp-read programm(s) first, like: MSI Afterburner, HWMonitor, Aida64.

If the high temperature is still there with Prime95, its probably a faulty probe as you allready though.

  - in that case I'd try at least 2 other CPU stresstest programms and see what they give you on temperatures. (I'd take aida64 & cinebench, for the real world test)

       -> if neither of those two programms give you those temp spikes as Prime95, it is indeed Prime95, though that would be really odd.

       -> if they also give you the temp spikes to 100°, either the probe is broken or something in your build does not work like it should.

 

[porina]

14 minutes ago, Nord said:

Yes prime95 is old and probably a bit outdated but its the oldest, well knowen and probably still most used CPU-stresstest there is. I mean hell, its around since 1996 and still being updated.

The opposite is the case. Prime95 gets updated when new features are added to processors if they provide real performance boost. Prime95 was originally wrote to do a real task (and still is), and stress testing is a side effect of that. A good boost came with Haswell and FMA instructions. If anything, other stress software isn't as stressful as they aren't necessarily similarly updated.

14 minutes ago, Nord said:

@Awkward Turtle

Back to the original problem, I'm dubious about the temps if the heatsink is fitted correctly. I do run a 6700k with Hyper 212, and with P95 that rarely gets much above 70C.

 

Try hwinfo64 as that not only monitors temps, but also voltages and other CPU status flags. Some mobos have "enhanced turbo" which is basically a mild overclock with extra voltage so that might not help.