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3950x short cooler recommendations?

burn

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I picked up a Noctua NH-D15 for this rig (A 3950X on an Asus Prime x570 Pro) and the top of the case will not fit. I considered breaking out the dremmel but as it's actually going in a rack, this feels unwise. It's going in an ancient Antec 4U rack mountable case if that helps. Looking for suggestions at this point on a new cooler. =)

If only I hadn't have used motherboard standoffs it would fit, it's that close.
 
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How much lower than the NHD15 do you need?

edit:
Might want to check compatibility before you buy anything, and they also give you the cooler height, so if you have an idea of the excess in height dimension of the NHD15, you could pick something lower by at least that amount.
 
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Tried smaller fans on it?
 
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I picked up a Noctua NH-D15 for this rig (A 3950X on an Asus Prime x570 Pro) and the top of the case will not fit. I considered breaking out the dremmel but as it's actually going in a rack, this feels unwise. It's going in an ancient Antec 4U rack mountable case if that helps. Looking for suggestions at this point on a new cooler. =)

If only I hadn't have used motherboard standoffs it would fit, it's that close.
Please for the love of god, don't take a dremmel to any heatpipes and try to shorten them. Trimming heatpipes is a BIG NO-NO because it will leak the refrigerant out and will render the heatpipes (and the whole cooler) completely useless. You're a wise man for not doing that to an expensive Noctua NH-D15.
 

burn

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I was considering putting holes in the case. the heat pipes are about 2cm too high for the case to close.

Tried smaller fans on it?
It's the heat pipes preventing the case from closing. Not the fans.

How much lower than the NHD15 do you need?

edit:
Might want to check compatibility before you buy anything, and they also give you the cooler height, so if you have an idea of the excess in height dimension of the NHD15, you could pick something lower by at least that amount.
Unfortunately the specs are not listed on Amazon.ca :(
 
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If an NH D15 is to tall but you want to stick with Noctua I'd look at an NH-D14 or go for an AIO water cooler
 

burn

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Looks like I'm getting a https://noctua.at/en/nh-l9x65 instead as it will most definitely do the job with two 80mm Vantec Tornadoes moving air through the case. Plus I'd rather not risk turning this steel case into a giant heatsink. =)

If an NH D15 is to tall but you want to stick with Noctua I'd look at an NH-D14 or go for an AIO water cooler
Water cooling is strictly prohibited in this facility. Also the U14 is only 7mm shorter.
 
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Noctua states that cooler will cause the 3950x to run below it's base speed:
"Possible but sustained clock speed will be below base clock."
And
"The NH-L9x65 is a highly-compact low-profile quiet cooler designed for use in small form factor cases and HTPC environments. While it provides first rate performance in its class, it is not suitable for overclocking and should be used with care on CPUs with more than 84W TDP (Thermal Design Power). Please consult our CPU compatibility list and TDP guidelines to find out whether the NH-L9x65 is recommended for your CPU."

I'd definitely look for a better cooler that will fit your case.

Read these:
"Unlike other mainstream Ryzen processors, the Ryzen 9 3950X doesn't come with a bundled cooling solution. AMD recommends using a 280mm AIO cooler to keep the cores chilled, but we found even that to be somewhat inadequate. In our tests of the 3950X, our Corsair H115i struggled to keep core temperatures low enough to maintain the factory boost frequency. To extract the full potential of a 3950X, you're best with a custom water-cooling loop. "
 
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burn

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Please for the love of god, don't take a dremmel to any heatpipes and try to shorten them. Trimming heatpipes is a BIG NO-NO because it will leak the refrigerant out and will render the heatpipes (and the whole cooler) completely useless. You're a wise man for not doing that to an expensive Noctua NH-D15.
LOL

Noctua states that cooler will cause the 3950x to run below it's base speed:
"Possible but sustained clock speed will be below base clock."
And
"The NH-L9x65 is a highly-compact low-profile quiet cooler designed for use in small form factor cases and HTPC environments. While it provides first rate performance in its class, it is not suitable for overclocking and should be used with care on CPUs with more than 84W TDP (Thermal Design Power). Please consult our CPU compatibility list and TDP guidelines to find out whether the NH-L9x65 is recommended for your CPU."

I'd definitely look for a better cooler that will fit your case.

Read these:
"Unlike other mainstream Ryzen processors, the Ryzen 9 3950X doesn't come with a bundled cooling solution. AMD recommends using a 280mm AIO cooler to keep the cores chilled, but we found even that to be somewhat inadequate. In our tests of the 3950X, our Corsair H115i struggled to keep core temperatures low enough to maintain the factory boost frequency. To extract the full potential of a 3950X, you're best with a custom water-cooling loop. "
Thanks! You saved me a bunch of hassle. Looks like I'm going with a NH-9US instead as AIO is prohibited in this facility. =)
 
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Noctua nh-d9l is listed with a height of 110mm and compatible in 3U chassis.
 
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Just change to water cooling, 3950x is hot enough that lower tier coolers can't suppress the temperatures.
 
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Just change to water cooling, 3950x is hot enough that lower tier coolers can't suppress the temperatures.
He's already stated he cannot use water cooling for this build in 2 different posts :kookoo:
 
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Also there is another noctua
142mm hight with fan on top mounted and it is not 165mm like D15
 
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Perhaps you could modificeret the case side something like this
644D9B31-91B1-40BF-B92C-E8A67ECA4DAF.jpeg
 
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LOL

Thanks! You saved me a bunch of hassle. Looks like I'm going with a NH-9US instead as AIO is prohibited in this facility. =)
The Noctua NH-U9S is very nice, I got one of them for my Ryzen system just a few weeks ago.
It's quite small but it has decent performance with the five heatpipes and it outperforms the NH-D9L.
 
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i'd buy a new case instead..
 
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yes i agree with above buy a new case put a big air cooler on it prob solved.
 
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Also there is another noctua
142mm hight with fan on top mounted and it is not 165mm like D15
That would be eminently better than a 92mm HSF
 
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Or just leave the side off
 
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This thread is pretty wild lmao. I have had the L9i and currently have the L9x65, D9L, U9B SE2, U9S and C14S.

Current Ryzen CPUs are impressively "smart" and you'll hardly run into outright thermal throttling like you would on an Intel CPU with grossly insufficient coolers, because of the various "soft" temperature and voltage limits that automatically and constantly temper your maximum achievable boost speeds both single- and multi-thread. Thermally, the cooler you choose, the ambient temperature, case airflow, other heat-generating components (GPUs during games) can all affect clocks...you get the idea.

You're not going to want anything less than a L12S minimum on that 3950X, period. Assuming a mild 20-22C ambient temperature and a case that isn't an open testbench:
  • You can expect an appreciable loss of performance by running the 3950X in a closed case with the L9x65 and D9L. How much exactly is up to your own testing to determine, but it's far more than margin of error.
  • The U9S is right on the edge because it depends heavily on directional case airflow. Most consensus in SFF land is that the U9S should always be passed up for the C14S when running a 3900X or 3950X for the noise advantage alone, but also because full load can get closer to 90C than would be comfortable.
  • L12S works like a mini C14S, and usually trades blows with the U9S for less noise. Both of them the bare minimum for high core count Ryzen, without any expectations of getting full stock performance.
  • The C14S works best with the stock A14 140mm fan (or equivalent, or better like iPPC2000) on top of the heatsink. The fact that the side panel on the case is solid and doesn't afford the C14S direct outside airflow doesn't make as much a difference as you people seem to think, as long as there's plentiful fresh air moving through the case. Which seems to be the case as OP has described. But if the C14S is absolutely choked from having say, barely 1cm of clearance to the side panel, that's a different story and might justify cutting a hole in the side panel.
  • In slightly height-restricted cases, the C14S and Scythe Fuma 2 are usually the top contenders, and both will require plenty of case airflow. But the Fuma 2 / Mugen 5 present obvious height clearance issues at 155mm.
If you stay far away from the computer and run everything at full blast, keep the room ice cold and/or don't care much about load temperatures or performance loss, there's nothing stopping you from going with a U9S. Just keep in mind that with high core count CPUs, running dual-fan on the U9S is less of an optional choice as it should be mandatory to get as much air flowing through that heatsink as possible.

Moral of the story, you should be looking at a bigger case, unless there's obvious something preventing you from doing so.
 
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i'd buy a new case instead..
yes i agree with above buy a new case put a big air cooler on it prob solved.
Or just leave the side off
The OP already stated they are using a rackmount case. If you guys are unaware, rackmounts adhere to certain heights. In this instance, the case is a very standard 4U, which means 4 rack units. That equates to a total height of 177.8mm, which is why the NH-D15 doesn't fit.

Taking the "side" off wouldn't make any sense here, as since it's a rackmount, what would constitute the normal side in a standard desktop is actually the top. And in that case, you'd be interfering with the rack unit above it. Which means OP would need to (I presume) rent another rack unit in the rack, which costs extra. Another thing that OP has mentioned is the facility prohibits watercooling, so AIOs are out of the question, and so are custom loops. Only air coolers (or passive coolers) that fit in a 4U height, while accounting for motherboard + standoffs + panel thickness. So realistically OP's only choice is to go passive and run some really fast Delta fans in front (standard server-style) or to use an air cooler that is less than ~160-170mm in height.

Personally I've used the Noctua NH-U9DX i4 with my server. They fit nicely in my 4U chassis, with some room to spare. My dual Xeon 2683 v4's never go above ~65C even at full load. Not sure if they have an AM4 mount for that one though.
 
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Storage Corsair Force LE SSD 500GB, Fusion IoDrive 2 1TB, Huawei HSSD 2TB
Display(s) 1x Dell U2913WM 2560x1080 75Hz, 1x BENQ XL2411Z 1920x1080 100Hz, 1x Acer XB1 xb271hu 2560x1440 144Hz
Case Phanteks P600S
Audio Device(s) Sennheiser HD599, Blue Yeti
Power Supply EVGA SuperNova G2 750W
Mouse Logitech G502 Lightspeed
Keyboard Corsair Strafe RGB MK2
Software Windows 10 Pro 2004
Benchmark Scores Cinebench R20: 5086 MC, 498 SC CPU-Z 17.01.64: 5788.9 MC 521.5 SC
well then stop using a rack mounted case?
???
Stop using a rackmount case, in a server rack? Or are you saying use a normal desktop case, at home?
They mention a "facility", so I'm assuming this is rented space in a datacenter-type environment; i.e NOT a home computer, which means rack only...
 
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