Noctua NH-U12DX i4, Premium CPU Cooler for Intel Xeon LGA20xx (Brown)

I bought these to use on a dual-socket ATX (not SSI-CEB or even "E-ATX") LGA2011-3 board, the X10DRL-i from Supermicro. I contacted Noctua to ask about options and they gave me this and another (92mm fan) option, they even informed me that the dual 92mm could only work front to back and not up and down, I figured a larger single fan would be close in thermals (possibly better) and definitely quieter than 2x92mm.Mounting was very easy, I had an old NH-D14 I used on a Sandy Bridge E HEDT chip awhile ago and this was just as easy. Very quiet and have had no issue installing 2 of them on the very narrow spacing between the sockets.Even with both 2660v3 (10c/20t) CPUs in Prime95 (which is power virus level heat generation), hottest core never exceeded the mid 50s (Celcius) with these coolers in my fractal design r5 with all the HDD bays packed obstructing intake and two 140mm 1000RPM intakes and one more as exhaust in back.Mega impressed with Noctua's customer service, quality, noise, and thermals.I ended up buying Noctua fans for my server all around as well as my other two rigs, definitely earned my business, a little pricier but they make good stuff and this was easily worth what I paid.

For supermicro X10SR and probably many other supermicro MB this is only logical choice. Pay attention :- You will receive also good thermal paste, do not need to buy other- If you want super low noise reduction and planing on high TDP (135W+ for at this moment available E5-26xx CPU) buy with this also another 120 mm Noctua fan to install on both side and lower fan speed.- This is for 2011-3 only with 3 installation options :1. Square2. Narrow 13. Narrow 2 (90 degree rotation)Only one negative rating for this purchase is shipping info but this all because of local shipping company and culture, I am even surprised with shipping speed, better than expected but information is wrong in many steps. This even show delivery on some random location at end.

I purchased this as a replacement for a cheaper generic cooler for my Haswell 5820 CPU OC'd to 4.2 GHZ. I do quite a bit of HD video encoding and with all 12 cores at 100% utilization, the core temp never got above 70 C. Now this was just a tad high for my liking, so I backed it down to 4.0 GHZ, and it stays around 67 C. The fan noise is virtually non existent.This is a rather large cooler, and rather than having a horizontal orientation which would most likely cause it to partially obstruct a couple of memory slots, it perches vertically on the processor, and in my NZXT Phantom mid tower case, almost touches the left side panel.The heat sink allen head mount screws are easily accessible (with the included long allen wrench) once the fan is removed which is a very simple operation, and mounted to my ASRock 2011 v3 board without needing any of the included adaptors. Also included is a tube of thermal paste, which was nice since I didn't have to hunt down my tube of Arctic Silver.The only drawback to this unit, is that it's not as aesthetically appealing as some coolers on the market..it has a very utilitarian look about it, which was fine for me, I like my builds to look clean, bling isn't an absolute necessity, but it does what it's supposed to. And very well.Highly recommended.

Easy to install. Had to order this CUP cooler because my AIO closed loop water cooler gave up the ghost after 10 loyal years of service. Keeps my processor cores below 110°F even at higher than normal processing tasks, and around 80 to 85°F at idle.