Pure Rock Low Profile 100W TDP CPU Cooler | Intel 1700 1200 1150 1151 1155 | AMD -AM5 AM4 | BK034

I installed the be quiet! Pure Rock Pro 3 LX on a mid-range Intel build and was immediately impressed by the overall build quality. The heatsink feels solid, the mounting hardware is well organized, and installation was straightforward following the included instructions. Cooling performance has been very consistent. Under gaming and stress testing, temperatures remained stable without sudden spikes. The dual-fan setup moves air efficiently while keeping noise levels extremely low — even under load, the system stays noticeably quieter compared to stock coolers. Clearance was reasonable in a standard ATX case, though as with any larger air cooler, it’s important to check RAM height and case compatibility before installing. For anyone looking for strong air cooling performance without moving to liquid cooling, this is a dependable option that balances thermals, noise, and build quality very well.

Used on an AM4 3800X. Stress test CPU for an hour. Before and after change. 84 degrees before. 72 degrees after. This did have pre-installed thermal paste. But the plastic protecting it was broken into pieces all over paste. The installed paste is conductive and supposed to do superior job at cooling compared to MX-7 paste. I'm not upset about paste. The MX-7 does a great job. This Pro 3 LX is little more compact than Dark Rock 5 version. So it can fit in more cases. I believe it's 161mm height vs 168mm on the 5 version. Fan cleared the height of G.SKILL Trident Z Neo Series DDR4 RAM Fits perfectly in the NZXT H510 pc case

I have an ITX-Mini industrial type all-in one ultra-slim open air mesh frame chassis & motherboard with an i7-4790S cpu, that has been a beast to tame workload heat, in this smallest of form-factor chassis, in an open to the elements temperature environment, and much to much dismay, and satisfaction, the Be Quite! Pure Rock LP finally solved my CPU heat throttling problems. The original OEM installed CPU cooler was essentially the basic original Intel aluminum lug & fin, topped with a fan, reference CPU cooler, but cut down to very low 37+mm profile to fit in an ultra-slim desktop chassis. Searching for better replacements I found the Noctua NH-L9i cooler was a few mm's tool tall to fit in the chassis, and that it had height tolerances problems in the CPU clearance zone underneath the CPU cooler. An ARCTIC Alpine 12 LP did fit the clearance issues, and had lower noise, and power use; however still being based on an aluminum lug & fin design, (no heat pipes), still was not able to keep up with sustained temperatures, under even moderate loads. When Be Quite announced their new LP cooler and that it was a copper heat pipe design, fit into the most minimal/maximal dimensions limits allowed for CPU cooler tolerance zones, and could tame even newer generation CPU's, I was skeptical. But as a still last ditch resort to keep a workhorse computer thermally tamed, I decided to purchase one, give a try, with the clearance issues, see if I could even get it installed, and if it could improve on the Alpine LP. Mission successful !!! The install was razor shave close cut; not even micro-micrometers to spare in clearance tolerance all the way around, after mounting; from the top of the fan just barely touching the chassis cover, and with the CPU cold plate fit and around & underneath the cooler; including the cooler and mounting bracket just barely fit over a row of power capacitors sitting just below the bracket. The mounting certainly is "flexible" but this turned out to be a benefit, after getting the mounting brackets and screws tightened into place. The bracket installation wrench provided & needed to tighten the CPU mounting bolts, (not the mounting screws), had some difficulty getting around tight part clearances, that were right up and into the CPU cooler clearance zone, but I was able to work the wrench enough to secure the mounting bolts to the brackets; then tighten the mounting screws. After turning the system back on, immediately I noticed a 10-20 deg F. reduction, as compared to typical temps with the Alpine LP. And even with now spring summer temperatures coming on, and the ability to cool the cpu is being impacted by increase in ambient air temps, the Be Quit! LP has continued to maintain the heat dissipation, through all load testing; most notably that CPU is staying below throttle temperatures where; the OEM installed could never do, and Alpine LP could barely keep up with! Additionally noticed is that the noise level was way down, even at full RPM the Be Quit! Any fan noise had a slight low hum winy noise, but only noticeable at maximum RPM. Overall, this CPU cooler solved a long and ongoing cooling problem in a very minimalist chassis install, and it does it with no no high speed fans, or related added noise.

Works good, nice and quiet

It keeps my cpu cool as advertised. Only complain: I wish they would use the same mount system as the Dark Rock 4 that was very easy to use/install. This slim model that I bought cools very well but it was a pain to install because it uses pins in a socket to hold it to the motherboard. I found them difficult to seat. Their larger model uses a metal mounting kit that was very easy to install.

I gotta say, this is my first time upgrading my PC and it's prebuilt. I noticed a whole difference with this cooler compared to the stock version (coolmaster). I did a stress test on it and I was impressed with the results. Temperatures were normal. Instructions were clear. While you can hear it kinda, which is normal if you're running games, but this CPU cooler is 10x less louder than my coolmaster (which sounded like a jet engine). I will be replacing the rest of the other fans with Be Quiet! products! I may be satisfied with the product, but I will update within 2 months :) AMD Ryzen 5 7600 Be Quiet! Pure Rock 3 LX Multicore Test: 68.4C (MAX) Singlecore Test: 45.6C (MAX)

Bought two of these. Was surprised that it fit in a micro Coolermaster N200 case. Have a bit of room to close the lid. It is a little tricky to get the hooks on but surprised that it keeps a Ryzen 9600 cpu very cool. I love the copper piping. Isn't very heavy either. Worked great on the two computers I built recently.

This was a massive upgrade over the stock Intel cooler that was mounted on my old i3 CPU. The be quiet! keeps the new CPU nice and cool, by comparison. Like in the 60s (C) at full load vs 90+. Now, if they can old make one for my 2080 Ti graphics card!