Is it just me or temps aren't good for a 2x240mm Custom Loop?

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MegaAgente17

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Hello everyone. I recently replaced my old Corsair H100i GTX with a
whole new custom loop to achieve higher clocks at lower temperatures.

My CPU is a 5820K OC'd to 4,2GHz/1,25v running on a Phanteks Glacier C350i CPU Block
plus 2x240mm Alphacool Rads.

I've been running full stress with prime95 26.6 Small FFT's for about 40mins now and max
temps are 73c on and ambient temperature of 26-27c. Note that my Room is close with no
A/C in it having just a single windows. After all that being said, i honestly thought temps
would be much better than that. I tried to reseat the block, double check thermal paste
an all seems to work perfect. Heat transfer really well and my rads blow hot air like a
freaking space heater, lol.

Here's some pictures for more datails;
CPU%20Temps_zpsiamioria.png

IMAG0548_1_zpsfgbtmhvd.png


My PC has 7 fans total, 4 intake in the front (kinda push pull configuration with frontal Rad)
2 on top in push mode with the top rad, and the rear exhaust fan.

What do you all think is going on here?? Are the temps fine? Doesn't look like to me.
I expected better than that. Let me know guys, thanks.
 
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MegaAgente17

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The front rad intakes air, the top rad exhaust air. Air flow is pretty good with lots of air going through the case. My room temperature is around 25-26c.
 
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MegaAgente17

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Well... it improved around 10c. I don't know what's causing my CPU to heat that much. Might be defective or motherboard related... What do you think? Try another CPU or motherboard?
 
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justin.m.beauvais

justin.m.beauvais

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You probably don't want the top being the exhaust in this case. What you are doing is taking the air into the case, heating it with the front rad, adding to it with the heat in the case, then drawing all that heat over the top rad. Not an ideal situation. In this case you want both to be intakes. Your rear case fan and PSU will be your exhausts, plus any other opening as you will have positive air pressure. With cool air moving over both rads it should help those temps.
 
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10tacle

10tacle

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Holy crap! So you were running about 10C on average higher with that Corsair? Yeah something else is going on. I assume you have ensured the contact between the heat sink and CPU are as tight as possible. Judging by the core temp variations you have it evenly dispersed in pressure as those temps don't variate much between cores. So that's not the problem with uneven clamping pressure.

Temps are of course good but for what you have spent on water cooling, at least 20C above what I would consider acceptable, especially at your relatively mild overclock. If you were pushing over 4.5GHz at 1.35v those would be good temps. Just for kicks, download and run HWiNFO64 and run settings on that. HWMONITOR has a known issue having faulty readings with certain motherboard chipset temp sensors. It's always good to have a second opinion before digging deeper. Post those results.

This is assuming the way your top radiator fan draws from inside the case means you have checked the thermals inside your case to not be much over ambient. I don't think that's the issue though.
 
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MegaAgente17

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Well. Temps weren't that high before, and my CPU OC'd just so much better in the past, like 4,4Ghz/1.28. But now, i can't get it past 4,2Ghz unless going up to 1,3v for 4,3Ghz. Im starting to think it's CPU or MB related issue.

Here's the result with HWiNFO64
HWINFO%20Temp%20results_zpsu3s25vfz.jpg
 
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10tacle

10tacle

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Okay so that verifies no false reading from HWMONITOR. Well all other things being equal, that would point to chip degradation if you have to use higher voltage to maintain the same overclock for stability over time. I experienced this with my old Core 2 Duo E8400 I once had running at 4.4Ghz from its stock 3.0Ghz. I'm sure it's more of an issue with that Haswell-E six core chip. So I would suspect that might be your issue.
 
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10tacle

10tacle

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Also, it is remotely possible it is your motherboard causing this, but in my experience if the motherboard has a voltage management problem it will just die and fail to post. This is why I'd point to the chip as being the culprit.

Check your motherboard closely for a blown capacitor. If it's a bad MOSFET chip, you'll never be able to diagnose that without a micrometer and knowing exactly what you are looking for in readout.
 
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MegaAgente17

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Just did that. Took the motherboard apart, RAMs, and CPU to check if there's any anomalies on the CPU socket or pins. Motherboard is in great shape, everything hooked up correctly, CPU and Block making full contact, water flow running at really fast speed (at pumps capabilities i.e. 500l/h). Nothing else to look at. I think it's the chip, which i'll be upgrade anytime soon to a 5930K or 5960x. What would you suggest?
 
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MegaAgente17

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Well.... is that IDLE??? To be full load temps those are incredibly low... for real. They said it was tested on a 25c ambient temp room but even that is hard to believe... for real. How can anyone achieve load temps of low mid 40s with those chips? Must used really big rads and superb airflow, even with that said it's still doubtful.
 
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10tacle

10tacle

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Well, if you don't have a micrometer handy to check for a said misfiring MOSFET chip, your best bet is to roll the dice and assume it's the chip. Regarding chip upgrade, you are looking at $100 more for that 8-core 5960x which runs 500MHz slower than the less expensive 6-core 5930K. You'd have to research your use like gaming vs. productivity (like video editing) to see if the difference would be worth it to you. If you run games at 1440p for example, you will not see any gain from that 500MHz faster and less expensive 5930K; unlike the difference you'd get in video rendering with the 5960x with more cores and threads.

Good luck!
 
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1LiquidPC

1LiquidPC

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Have you tried different pump speeds? If it's too fast, the coolant isn't having enough time to take heat out as efficiently. The pump itself will add extra heat to the loop at higher speeds as well. I'm guessing you've tried adjusting fan speeds as well to see if that has an affect. Is the build just been assembled? If so, could be some air pockets in there that need worked out. Top-mounted rads are the usual culprit in this case.
 
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MegaAgente17

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Been running this build since 2015 now. I've tried different pump speed, fans are well adjusted too. The temps reach above 65c they all goes to max (that's how i set them). I've made sure there's no air filled into the loop as well, everything is working as it should be. I can add this CPU OC'd way better before, with higher clocks at less voltage and better temps.
 
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MegaAgente17

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Hello sir. Being everything possible to improve my temperatures. Seems to work. I took the CPU off the CPU socket, blew tons of air with a compressed air can to the socket, mount it back and reapplied thermal paste. These are the results im getting now at 4,5Ghz/1,33v.

HWINFO%20Temp%20results_zpsfnfk5cye.jpg
 
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