High temp on recently custom watercooled computer

onsenrparle · Apr 6, 2015

I just recently watercooled my pc and I'm in the process over overclocking my cpu and gpu. I've read a couple guide on the forum to know where i'm going and I started to do some testing before overclocking.

While running prime95 for a while i'm getting temps maxing out at 83 Celsius.
edit : On idle the temperature is around 30-33 Celsius
Are these temps normal and what overclock can I hope to achieve?

Thank you

-------------------------------------
My system:
intel i7 4770k
gigabytes geforce gtx780 ti 3072 Mb
gigabytes z97x- gaming03 motherboarrd
16 GB corsair vengeance
Cooler master G750M power supply
1TB Western Digital
120 GB samsung 840 series SSD

Watercooling:
XSPC EX420 triple radiator
EK supremacy evo acetal cpu water block
Koolance VID-NXTTN2 Water Block
3x noctua redux NF-P14s 1200 PWN
bitspower 150 mm z-multi
mcp655 adjustable pump

Zerk2012 · Apr 7, 2015

If your getting 83C without overclocking you have something very wrong. Your already over Intel's recomended temperature.
I would think either air in your loop, or improper mounting of the block/thermal compound.

onsenrparle · Apr 7, 2015

The loop has been running for more than a week now and I don't think there are anymore bubble, I've made sure to run only the pump and to shake every part to dislodge any remaining bubble. And I tried reapplying thermal paste but I got no change in temperature. (I'm using arctic MX-2)

Zerk2012 · Apr 7, 2015

Again if your hitting 83C without overclocking something is wrong.
I get about 87C with my i5 overclocked to 4.8 on a standard H100.
Might need to check your Vcore volts when running prime95 your board could be putting to many volts to the processor.

onsenrparle · Apr 7, 2015

Yes I understand something is wrong, but I don't understand what it is. While running prime95 my voltage is at a steady 1.237 V.

The only thing else is that one of the pin under the processor got slightly bent but I put it back in place and haven't have any problem with that, no blue screen even under long period of utilization.

Zerk2012 · Apr 7, 2015

That is higher than it should be, 84 watt processor should be around 0.8 / 0.9.
With the motherboard putting more volts than it needs that would explain the higher temps.
I would leave the volts the same and go ahead and bump the multiplier up to about 42 run prime 95, bump it up 1 more, run prime 95, if you get up to 4.5 or so stable call it a day.
Edit jumping the gun some. Take your Vcore off auto set it to 1.23 then start overclocking.
You should be able to get a decent OC at 1.23.
If you wish to go higher than what you get stable with the 1.23 volts post bact with the results and I would help if needed, now that we determined the cause of the problem.

onsenrparle · Apr 7, 2015

When you say leave the voltage the same, do you mean set the vcore to 0.8 -0.9 in the bios?

Zerk2012 · Apr 7, 2015

If your going to overclock take it off auto and set to about 1.23 then overclock and test.
Thats common for motherboards to do that to ensure it's stable.
If your not going to overclock you could leave it alone 83 fully stressed is not bad although higher than Intel recomends. Your not going to be running 100% under normal usage. Or set it to 1.1 or so and run prime 95 just to make sure all chips will very some.

onsenrparle · Apr 7, 2015

Are there any other value that need to be set to a fix amount in the bios? because when I run prime95 and check on CPUID, I can see the package powers slowly climbing up until I get a blue screen
I'm running with vcore fix at 1.228 and 4.2 GHz

btw: thanks, I had forgot to set the vcore at a fix value instead of auto, that was causing some issue

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