IBT or Prime 95 ?

hakank68 · 29 Nov 2013 at 14:28

Hello, i have recently built my pc with a watercooled cpu however running IBT at maximum i am getting very high temperaturs arround 70's. I will be replacing my thermal paste soon but what else can the problem be as these are really high for a stock speed 4670k.

My loop = Pump/res - Rad - CPU Block - Pump/res

also i have heard that IBT is not very accurate and a lot of people use prime 95 but what setting should i use with prime 95, it looks a lot more confusing that IBT

Thanks in Advanced

Ragnahex · 29 Nov 2013 at 14:34

to be honest i just click start when prime95 starts up and that's it... just make sure you stop it again because it hides in taskbar. temp very high sounds like misplaced cpu block

daveip · 29 Nov 2013 at 15:44

Haswell - you'll need to delid to get lower temps really.

As for IBT vs Prime ... I'm happy running IBT at maximum for every day stability test. Prime95 is extremely synthetic and you won't run at anywhere near the load that Prime95 would place on your machine so I wouldn't mind if my rig was IBT "Very High" stable and not Prime95 stable for everyday use. Prime... it's great to push the CPU to the absolutely limits but you're never going to get there in real life usage.

hakank68 · 29 Nov 2013 at 19:26

Ragnahex said:
to be honest i just click start when prime95 starts up and that's it... just make sure you stop it again because it hides in taskbar. temp very high sounds like misplaced cpu block

how could i have misplaced it, what shall i do to as i tried following all the instructions, thanks

Cold_And_Miserable · 1 Dec 2013 at 00:11

hakank68 said:
what setting should i use with prime 95, it looks a lot more confusing that IBT

Custom -> Set RAM usage as high as possible-> Set size from ~1024k to ~512k -> Set to 20 minutes -> Start

The defaults are useless. I've never failed them on unstable clocks.