Noctua NHD-15 not performing well?

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swiftleeo

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Well, I'm running it with a single Noctua fan on my i7 4790k. Idle temps are around 40 celsius (and I'm pretty sure they should be around 32-33 celsius at idle from similar setups). A stress test at full load hits around 72 celsius..

is the other fan needed to achieve the lower temperatures or am I doing something wrong?
 
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Karsten75
i7-4790K CPUs seem to run a little hotter than previous generations (blame it on the higher clock speeds). So they seem to need a little more robust cooling.

Your temperatures are not out of line and the maximum is well within tolerance.

Depending on case ventilation (why do people always only supply some of the information that may be relevant?) adding a 2nd fan may not help - or it may.
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Karsten75

Karsten75

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i7-4790K CPUs seem to run a little hotter than previous generations (blame it on the higher clock speeds). So they seem to need a little more robust cooling.

Your temperatures are not out of line and the maximum is well within tolerance.

Depending on case ventilation (why do people always only supply some of the information that may be relevant?) adding a 2nd fan may not help - or it may.
 
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swiftleeo

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Probably because some people woke up 5 minutes ago :p All jokes aside, I have a HAF X case. It has a front 230mm fan for intake (running at max), a side panel 200mm for intake (running at max... well, they all are besides the CPU fan), a 140mm rear for exhaust, and a top 200mm fan for exhaust. Ambient temperature is around 23-24C.


 
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smorizio

smorizio

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also with temps is what thermal paste was used some paste is not as good as others. also with cpus is the cpu itself running stock voltages right now. if the cpu itself might have a higher core voltage then normal...not all cpu are great binned units. also check the fan profile and fan speed in the bios some mb and the newer efi can have the fan spinning real slow at low loads,also msi mb bios i find there profile starts at 40c.
 
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swiftleeo

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All my fans besides my CPU fan are running on Molex power (and they seem to be running at max). I used Arctic MX-2 thermal paste (MX-4 is better but it also cost 15 dollars more versus 6 dollars.), and I have used this before, and I bought a new tube for the build.

CPU fan runs at about 600rpm idle, and more as it goes past 40c.

CPU has a average voltage of 1.2v
 
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Karsten75

Karsten75

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I don't think adding another fan will make a difference. As you mention, the BIOS thinks the temps is OK, since it's not ramping up the CPU fan speed at 40C. I see that the maximum Tcse value for that CPU is in fact 72C, so you are hitting max temps.

Wow, that means I need to rethink. :)

Yea, definitely try adding another fan, and if that fails, consider closed loop liquid cooling - I never have trouble with any rig I build with those.
 
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swiftleeo

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Well max on full load. There is nothing other than torture tests that I would do to make my CPU have 100% load, so gaming would probably be around 55c. Also, it's more like 62, but I can't get an accurate reading from anything. Core temp shoots up to 90 celsius from 40c in 2 seconds (doesn't make any sense???), HW Monitor goes nuts, Real Temp doesn't really help at all, and AIDA64 is just too confusing.

I take the 62 from AI Suite III. Its the max I got from that.

However, that's too close for comfort. I did try adding another fan a bit ago (used a 200mm fan I had laying around) and it didn't change much. What kind of closed loop liquid cooler would you recommend? I have to RMA an H110 but I was thinking about getting an H100i. The reason I have to RMA is because the H110 doesn't fit but the H100i does, so I'm thinking about getting it but not sure how it'd fair against the H100i. Also, the H105 would fit as well and has the cool little accent ring around it, but if it doesn't perform as well as the h100i, then no go for the 105.
 
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Karsten75

Karsten75

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I only once used a COrsair Liquid cooler - I think it was an H80 or H50 (single, 120 mm radiator). I didn't much like it in comparison to my usual, and preferred Intel or the NZXT Kraken series. Not for it's performance, but I seem to remember I had issued with mounting it the way I prefer to mount it and the fan was so noisy I swapped it out.

One weird thing is last time I used an INtel Cooler (November 2013, the fan was incorrectly wired, so it was rotating against the tilt of the fan blades. I was so gobsmacked, I had to call a friend to come over and verify that I didn't make a gooofball mistake. SO another fan swap for (surprise!) a Corsair Silent Series SP fan. :)
 
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swiftleeo

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So what kind of liquid cooler would you recommend? I need the radiator to be either 240mm or 360mm
 
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Karsten75

Karsten75

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You "need" it that size? Are you going to overclock? If not, a 120- or 140-mm (space permitting) might be good enough, it usually is for what I build when I don't OC. One fan is typically quieter than 2 and that matters to me.

I have never built with the Kraken H60 or H61 so I can't give you any personal experience with those. But I love my Kraken X41 - cools well and is pretty quiet with one fan. My i5-3750 right now is running at 32C with fan speed around 800rpm. not sure what ambient is, probably around 27C.

I will tell you that I read here of a great many people installing the H100 or H100i or another dual rad from Corsair and few complain.
 
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swiftleeo

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Well I don't plan to overclock right now, but I want the option and at my current temps, I don't have much of an option. My HAF X case has a mount for 360, and if I went with a 140 I could take my rear exhaust fan off and put it there. However, like I said, I need, or would like it to be, either a 240 or a 360, because I may want to overclock in the future.
 
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