Question I need to figure out which cooler I should get for a Ryzen 7 5800X3D ?

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May 31, 2025
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So I'm on vacation and I went into a McKay's used bookstore which has way more than just books. There was a plethora of tech like old & retro gaming consoles & games. In with that, there was a large selection of used PC components, enough to build 3 gaming systems. In there, I managed to find i the back and get a Ryzen 7 5800X3D CPU still in the box with factory seal still intact for $240. One of my best finds for a CPU that usually sells for around $350 to $450 on Amazon & Ebay. So, now that I've got this CPU in my possession, I'm struggling to figure out a new CPU cooler for this gaming power house.

I'm not sure what CPU cooler I have currently but its a Thermalright brand and is a low profile air cooler. This cooler struggles to keep my overclocked 4.35GHz Ryzen 5 5500 CPU from burning up when putting it through a benchmark & doing anything CPU intensive. Now from what I remember when pushing the Ryzen 5 in a benchmark, it consumes about 80w; the 5800X3D has a TDP of 105W, so the CPU cooler I have aint gonna work.

I have been looking at the Thermalright Peerless Assassin 120 SE as a possible option that could work & fit inside my Vetroo M03 M-ATX case, but i wanted to come here and ask for yalls opinions on what I should buy before I pull the trigger. I would prefer an air cooler tbh but I will consider a water cooler if thats recommended.

What CPU cooler should I buy?
 
"Well the video that I was watching literally had the AIO as an option and showed that it got 3 degrees lower than the Thermalright Phantom Spirit 120 SE."
3c less than what? if it's less than let's say 80c, it means nothing.

There's always a point of diminishing returns, Tjmax at which temperature it starts throttling is 90c and that CPU is not going to be any faster at 0c or whatever is lower than 89c.
So the PS-120SE was getting around 88C while the LFIII AIO was getting about 85C. Sorry for the long response
 
So I got the PS-120SE and managed to get it mounted and cooling the 5800X3D. If your looking for a good cooler that's cheap yet keeps the 5800X3D cool, then the PS-120SE and possibly the PA-120SE will do a good job for you. I've tried some gaming like CS2 and it was staying below 60C while playing at +215 FPS. While games like BeamNG with a bunch of cars loaded up on the map to simulate a CPU stress test gets the CPU to hitting about 75C. In fact my Powercolor Fighter RX 6750XT has been getting hotter than my CPU.

One thing I will mention, if you're buying this cooler is to make sure to have a proper backplate from like a AMD Stealth Wraith Cooler or something similar, and if you don't have one then you need to buy one. In addition, make sure that the cooler will fit in your case as well. Last but not least, if you think you need to get some thermal paste, the cooler comes with Thermalright TF7 and will do a good job with transferring heat, you don't need liquid metal or anything like that.

Other than that have fun with Thermalright's Dual Tower CPU Coolers and have fun with your system.
 
So I got the PS-120SE and managed to get it mounted and cooling the 5800X3D. If your looking for a good cooler that's cheap yet keeps the 5800X3D cool, then the PS-120SE and possibly the PA-120SE will do a good job for you. I've tried some gaming like CS2 and it was staying below 60C while playing at +215 FPS. While games like BeamNG with a bunch of cars loaded up on the map to simulate a CPU stress test gets the CPU to hitting about 75C. In fact my Powercolor Fighter RX 6750XT has been getting hotter than my CPU.

One thing I will mention, if you're buying this cooler is to make sure to have a proper backplate from like a AMD Stealth Wraith Cooler or something similar, and if you don't have one then you need to buy one. In addition, make sure that the cooler will fit in your case as well. Last but not least, if you think you need to get some thermal paste, the cooler comes with Thermalright TF7 and will do a good job with transferring heat, you don't need liquid metal or anything like that.

Other than that have fun with Thermalright's Dual Tower CPU Coolers and have fun with your system.
Starting with AM4. all AM4 and 5 MBs come with back plates, some metal, some plastic but that doesn't depend on factory CPU cooler that comes with CPUs, only on MB manufacturer. For same reason, coolers compatible sa AM4/5 sockets don not include back plate and use screws that for those back plates as they are all standard.
 
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