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Is something wrong with this CPU block??

post #1 of 6
Thread Starter 
Hi, guys!

I'm using actually a custom loop with a laing ddc 1-t plus, one alphacool XT45 360, one airplex XT 120, One GPU Universal block Heatkiller X3 LC and a CPU block alphacool nexxxos XP3 Light. Fans are Nidec GT AP14 and 15. This setup is waretcooling an i5 2500K oc'ed to 4.2Ghz and a HD7970 Ghz Edition (1200/1550).

I enjoy great temps in GPU, but i think that temps in CPU are too high.



This screenshot is after 1 hour of P95 torture test (Small FFT w/ AVX). The highest core is 56ºC with an ambient temp of 25,9ºC. The most strange thing is that water temps raise only 0,5-1º in that hour, and when I stress the GPU it (water) raise 5-6º.

I'm not sure if this situation is normal or something is wrong with my CPU waterblock. I reseated three or four times and tryied diferents thermal compounds (Prolimatech PK-1, Artic Silver 5) with no improvements.

What do you think?

Thank you all
post #2 of 6
Seems fine to me, what voltage are you using.

What you'll probably find is you can push it another 600Mhz and it won't increase in temp. I recon at 4.8Ghz you'll sit happy at around 60c which is fine.

Comps
post #3 of 6
Thread Starter 
Thanks, mate.

I'm using 1.26 vcore. To reach 4.8 i need 1.43, estable in prime and other torture tests, untestable in desktop (no llc options in my mobo).

if I remember well, near 70 grades and no raise of water temps. I'm going to test it now and posting it here later

Another screenshot, now with 4.8Ghz, 1.392v



As you can see, DeltaT air-water (Signed as Delta aire agua) reach at max. 4.3ºC. Ambient 26,6 and CPU 68 hottest core. I maybe expect that water will be hotter, touching a component near 70º.
Edited by johnnybra - 10/2/13 at 9:25am
post #4 of 6
That's fine to be honest... It's not unreasonable at all for the overclock you've got, also the fact that you're overclocking without using certain functions.
post #5 of 6
Quote:
Originally Posted by johnnybra View Post

Hi, guys! Warning: Spoiler! (Click to show)
I'm using actually a custom loop with a laing ddc 1-t plus, one alphacool XT45 360, one airplex XT 120, One GPU Universal block Heatkiller X3 LC and a CPU block alphacool nexxxos XP3 Light. Fans are Nidec GT AP14 and 15. This setup is waretcooling an i5 2500K oc'ed to 4.2Ghz and a HD7970 Ghz Edition (1200/1550).

I enjoy great temps in GPU, but i think that temps in CPU are too high.

This screenshot is after 1 hour of P95 torture test (Small FFT w/ AVX). The highest core is 56ºC with an ambient temp of 25,9ºC. The most strange thing is that water temps raise only 0,5-1º in that hour, and when I stress the GPU it (water) raise 5-6º.

I'm not sure if this situation is normal or something is wrong with my CPU waterblock. I reseated three or four times and tryied diferents thermal compounds (Prolimatech PK-1, Artic Silver 5) with no improvements.

What do you think?

Thank you all

Its absolutely normal that the CPU raises the water temps by far less than the GPU. Although the CPU is saying it is nearly 70C and the GPU is much less than that, those are only temperatures. Being hot and putting out lots of heat are two different things. The GPU puts out a far greater quantity of heat energy than a CPU. Its really closely related to the max TDP of each chip. An 1155 CPU is 95w and a 7970 is 250W+. Add to that the i5 is relatively low clocked and the 7970 is quite high.
Kusanagi
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Kusanagi
(21 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i5 3570K Asus Sabertooth Z77 EVGA GTX 780 SC Corsair Vengeance Pro CMY16GX3M2A2133C11 16GB 
Hard DriveCoolingCoolingCooling
Samsung 840 Pro 256GB X2 EK Supremacy Aqua Computer Aquaero 6 Pro Aqua Computer D5 USB 
CoolingCoolingCoolingCooling
Aquacomputer MPS 400 flow meter EK-CoolStream PE 360 EK-Coolstream PE 240 Noiseblocker Eloop B12-PS 
CoolingCoolingCoolingCooling
EK Vardar F2 EK-FC Titan Acetal & Nickel EK-RAM Monarch X4 Clean CSQ - Acetal+Nickel EK-D5 X-RES 140 CSQ 
OSMonitorMonitorPower
Win 8.1 Pro 64 bit Samsung S27A750d LG E2290V-SN Silverstone Strider Plus 850W ST85F-P 
Case
Corsair Obsidian 750D 
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post #6 of 6
Thread Starter 
Well, I know you're right, but when I read reviews of CPU waterblocks I usually see deltas lower than mine, and because of this I though something is wrong.

Anyway, I'm planning lapping the CPU block in the next modification of my setup. I expect this way can improve a bit the heat transfer between CPU & block.

Enviado desde mi GT-I9300 usando Tapatalk 2
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