NoctuaNH-D15 chromax.Black, Dual-Tower CPU Cooler (140mm, Black)

Silent operation and dropped my I-9 Intel CPU temp by 25 degrees C. I was using the NH D9L with two fans and it just wasn't keeping up. It is a bit on the large size but considering I have a full tower it fit like a glove. It does cover up the RAM slots. The black color is nice and it was fairly easy to install since I had the smaller Noctua cooler mounting hardware I was able to reuse. Very good quality and good value although a little pricey.

My all-in-one cooler failed and I swapped it out with this and the results were absolutely amazing. I didn't even need two fans to keep my CPU at about 68C Max playing Hogwarts in 4K on my i7 8700K CPU. Idle is around 22C. I could put the second fan in but it would protrude and I couldn't get my front glass on with my particular case but luckily it's not needed with my usage. I guess if you're into overclocking and trying to squeeze every ounce out of the CPU you can use the other fan but for my use for 4K gaming it does great. I checked out a few different tests on line and there was about a 1C difference with 2 fans vs 1. And it's surprisingly quiet, especially for how much air the fan pushes. Most importantly, I don't have to worry about this thing failing like all in one coolers. After this experience to me there's just absolutely no reason in my mind to get an AIO cooler other than lights when this thing works so well. I gave up a little bling from the lights but I'm super happy with no more liquid cooler stress. I think it looks awesome. This thing is super high quality and worth every penny. Install was easy and instructions were clear and everything I needed was supplied. I highly recommend.

I built my machine about 3 months ago.. but noticed while the NH-9DL did a good job with the i7-9700K. If I wanted to overclock, it got a bit toasty and unstable. So I looked at a AIO, and after seeing LinusTechTips review of the D15 decided to go with it.A few things I wondered and soon found out:#1 - I have 64GB of ram and noticed the D15 was a bit large, but figured give it a try. As you can see it clears the Ram, BUT didn't clear the other heat spreader on the MB.. ( NOCTUA did say that the second fan may not fit.. )#2 - Although the other fan did not fit exactly where it needed it DID fit in the case about an 1" away from the fins.. and was a big improvement over the original case fan and was close to the intended location.#3 - If curious, YES the original motherboard mount for the NH-9D does work on the new fan so saved me that time and made install even easier.#4 - BONUS the 9D fan with the 15D springs FIT where the 15D Could Not !! So it was like having 3 fans on the cooler ;)#5 - ANOTHER BONUS - They give a number of extension cables for the Fans.. So I was able to mount the fans and get them all power.After doing all that.. I went and got to overclocking.. and stress testing.. I ran Cinebench R20, and custom set it to have 256 render threads to really stress the chip. I then ran them back to back to back until the chip wouldnt get any hotter.. ( an average of 6 times ).As you can see, the results speak for themselves.I went from :89 degrees C when stress testing it in Default settings...to64 degrees MAX when stress testing it WHILE IT WAS OVERCLOCKED !!I was MORE stable overclocked.. ! WOW and WOW and WOW.. Noctua hit it out of the park..As for how loud it is.. it is a LITTLE louder than just the 9D.. but I can't tell you exactly how much as its not a lot.UPDATE:I downloaded OCCT and ran its burnin test, and got to 75C after minutes of maxing everything. The amazing thing is anytime it got off the overclocking settings the CPU dropped back to 35C in a matter of seconds. So unless your both overclocked to 5.1MGZ AND using a LOT of hardcore video or 3D Graphic editing for hours, I think the D15 will keep your system supercool.I personally overclock for gaming, and I DO BIM and 3D Scanning, so I have to process GB size 3D Point clouds, and convert them to Mesh.. THAT does force my CPU to run 100% for a hour to process. BUT even then I never saw higher than 70 and was rock stable the whole time.So I guess what I am saying is custom water cooling MAY do a tad better, but HIGHLY doubt a AIO could do any better at all, and especially not at this cost point and if your upgrading from a Noctua 9 or 12 you can reuse the fans with all the extras that come in the kit here.

Replaced a cooler master V8 v2 in an older 1150 chip/board because I had to replace some fans and it was such a pain to get the cooler master disassembled that I didn't want to figure out how to put the damn thing back together again. Not that I expect to ever have to do that with this cooler, but if I did it would be much easier to do. Fans clip on and are easy to move around and adjust to make sure you clear your memory and can fit into your case properly. It's keep the CPU as cool as the V8 did, and is actually on par with an AIO I have in another more recent build. And it is pretty quiet as well. So pleased all around with design and performance.