Thermalright SI-100 White ARGB CPU Air Cooler ITX, 6×6mm Heat Pipes,120mm PWM Quiet Fan CPU Cooler

I bought this cooler for a motherboard that had poor quality VRMs that needed downdraft cooling. The SI-100 just so happened to fit every single tick that I needed, and I'm not disappointed. The cooler was easy to install, however you will need a thin diameter screw driver to install it since accessing them requires you go through a narrow hole in the fin stack. Otherwise installation was effortless. Item was well packaged, fit and finish was good, and it cooled a Ryzen 7 CPU easily without a hiccup. I saw an average of 78°C while running a Blender CPU rendering benchmark without any TDP limitations on the processor, and VRMs were surprisingly about as cool. Noise is about average. The included fan can spin up to 2000 RPM, but I never see it go that fast. Performance overall is great.

M Sainz · 2025-04-12 · via amazon

This is the second one ive bought, except this time i bought the white one. Both installations went incredibly well, and they cool well too. The first one i mounted in a prebuilt of mine, and it tucks in the case very nicely

Some guy · 2026-01-09 · via amazon

Good quality low profile cooler. Cools down my Ryzen 5 5500 just fine. Packaged well, arrived with thermal paste in box. I don't think I would want to use this cooler on a 5950x or even a 5900x but it does a pretty good job keeping my Ryzen 5 5500 low temps. It occasionally peaks to 71 or 72 Celsius and I have the fan curve set to 80% blow at 60 C then Maximum Blow at 70 C, on average though this cooler keeps the temps more around 50 C. Idle is even lower but I don't keep my rig at low idle very often. Thermalright has been around for a while. I wanted a low profile cooler that did the job for my new Ryzen 5 5500 build and this fits the bill. No RAM clearance issues on my MSI B550 Gaming Plus despite using high profile g skill ram. I like the cooler, if I do upgrade my CPU though I will probably buy a beefier cooler than this SI-100. And I did not use the included fan FYI, I used a Noctua 3000 industrial fan, has extreme performance to the decibel and the Noctua fans run forever. I did read that the included fan doesn't last long so I didn't even try it. I believe I bought my Noctua 3000 industrial fans for 30 USD each after tax, maybe even cheaper. This cooler was 30 including the fan so I wouldn't expect to get great mileage on this cheap included fan. Installation was fairly straight forward and easy. You need a 6 inch length Phillips, a drill bit holder extension is too wide so you need to use a standard handheld Phillips screwdriver with probably at least a 4 inch length shaft. Torquing it down was easy, you can hear and feel when it's all the way torqued down, and the way the socket bracket is mounted there is probably no risk with over torquing. I like this cooler though. Despite it being summer and my rooms ambient temps being quite high this cooler is doing a great job. My ambient temps are around 85 F here, and my CPU is peaking at about 72 C under maximum load.

Ben W. · 2025-08-13 · via amazon

Needed a new cooler as I upgraded the processor to the best one my motherboard could support. I have limited space, restricted to 5 inches in height. Reviewed 2 quality tower coolers. Both had disappointing results. In fact, I went back to the stock cooler. The stock cooler worked until I get to a more CPU/graphics intensive programs. Although, not a gamer, I would like to try some. I then tried Heaven for a benchmark. As mentioned, the two new tower coolers didn't do the job, and the stock did ok until stressed. I decided to try a downdraft cooler. I initially tried the JIUWU 92 mm, but due to tight space, and cooler design, I could not install. I did keep it and installed on my other computer. What a surprisingly great job this does! Back to this cooler, installation was great! Easiest installation for any multiple adaptable CPU coolers I've tested. I'll give a shout out to the quality thermal paste provided too! This is a quality build cooler! The price of a cooler was not my primary concern, I needed something to do the job! Tried the expensive ones and I must say this does the best job and at a great price at that! Yes, the best downdraft cooler I've tested. !n reviews that I've noted, I have found this to be one of the leaders in its class. I've noted at least a 15 degree difference! I'd buy this one again! This is surely one, if not the best coolers I can get for my computer setup!

Carolyn Cobbs · 2023-09-19 · via amazon

Fits an LG1700 socket, among others. Keeps an i9/Nvidia 5060 Micro ATX rig in the low 80c's under full 100% load at turbo for ten minutes. It will never see close to that in full tilt gaming operation, so it will work quite well. In my case, I had to remove the motherboard to mount the bracket that holds it as the LG1700 adapter installs from underneath. Plugging all the wiring back in to the board with the radiator mounted and the board back in the case was an adventure, so I suggest plugging connectors back in before securing the radiator to the mounting bracket. The fan then clips on easily. Any way you do it, if you are installing in a small case you'll have some tight spots to fuss with. In the end, the instalation effort was well worth it.

McDo-it · 2025-09-21 · via amazon

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VALUE SCORE

Price

$20

Price

$20