Dynatron A24 Aluminum Stacked Fin with Heat Pipes CPU Cooler Socket AM4 for 2U

I avoided this for a long time because of the reviews. I was attempting to put a 3800x in a 1U box with a couple different Dynatron heatsinks, 1 passive, and 1 active. There was no way that noise level was going to be acceptable in my house, especially since I had the chip under lower wattage to try and reduce heat.Seated this bad boy and the same hardware in a 2U chassis, reset BIOS to default for CPU voltage and steppings, and everything is perfect. It can get a little loud here and there during the summer heat, but I have it in a pretty full and enclosed rack with not a lot of mesh. In a normal rack with good airflow I don't think anyone would even notice it.

First off, as others have said this will not fit front-to-back on a consumer motherboard. It screws into the motherboard wide-ways over the CPU socket, so it has to go sideways. On the plus side, you don't have to worry about RAM overhang.The fan attaches to the heat sink using plastic one-way clips. It's basically impossible to remove the fan without breaking them, so here's some advice:Screw the heat sink into the motherboard BEFORE you attach the fan. Otherwise, the fan will overhang the screws and be a real pain as they get in the way of the screwdriver.Don't do what I did and install a different fan (I got a 60mm Noctua). The fan that comes with the cooler is designed to fit over the motherboard screws, but my noctua was blocked by them. I couldn't get the plastic clips to sit properly because the screws prevented a proper seating on the bottom half of the fan, which caused thermal issues since air wasn't flowing properly. Then, because the plastic clips are one way and couldn't be removed, I couldn't just take the noctua off and reinstall the original fan. I had to hack things together. It eventually worked, but I would save the money and the trouble if I ever did this again.

This is sooooo much better than noctua heatsyncs. The noctua was running the chip at over 100 c sometimes. This one gets up to around 90 c which is still too high but this is with an AMD Ryzen 3950x with all cores at 100% utilization.For normal usage or even midrange usage this will make your chip last years!

It keeps my cpu cool enough. Nothing special. I just refused to pay outrageous prices for coolers that have and expiration date like closed loop liquid coolers or for expensive ones that can’t justify their price.I only use headphones with my pc and tv nowadays, so it doesn’t make a difference really. My old Alienware pc when it revved up gets louder, but when my gpu kicks in it’s definitely noticeable even over room fans.

The concept is sound but the implementation sucks pretty badly. I can only give it two stars.First, note that the orientation only gives you front-to-back airflow if the motherboard is oriented that way in the 2U case. Insofar as I know, there is only one motherboard that might have that orientation (out of dozens)... the (fairly low-rent) ASRock Rack motherboard. So that's a problem right there.Second problem are the screws. The two screws nearest the fins are slightly underneath the fins. Completely ridiculous, Dynatron could trivially have given proper clearance for those screws. The other two screws are under the fan, but the fan is fairly easy to remove (and comes un-assembled) so those two aren't really an issue.The third problem is the contact area for the CPU. Dynatron is striping aluminum and copper (the four heat pipes are flush to the cpu contact area, but embedded in the aluminum so its striped). This means that the heat-takeaway is going to be uneven and while that would have worked just fine with the Ryzen 2000 series CPUs, it's a freaking disaster for a Ryzen 3000 series cpu.These three issues severely limit the use cases for this cooler.-Matt

Awesome! Cooler keeps my ryzen 2700 VERY cool!!! This is the only AM4 2U cooler I could find so I'm glad it works phenomenally well! The fan is quiet too when correctly setup with PWM control. The other reviews are correct though... Mounting it is a pain! Short lived frustration was worth the great performance though!

I built a 2U PF-Sense router using a Ryzen 3 2200g this keeps it just slightly above ambient with the fan barely needing to run. I plan on using this on a low profile build with a Ryzen 7 2700. I hope it works as well on the high end as the low.

This is probably one of the few realistic options for SFF cases with tight clearances to the power supply. The stock Wraith cooler for the Ryzen 7 2700 is tall enough that it is fighting with power supply for air intake.As noted by others, the fins overhang the mounting screws on one side. Buy a long #1 precision Philips head screwdriver BEFORE attempting to install. Anything else will drive you crazy trying to use without chewing up either the fins or the head of the screw.Seems like a 5mm shift to one side in the design would make a huge difference in usability.