KEYFANCLUB 2-Pack 80mm Slim Fan, 80mm x 80mm x 10mm 12V Silent Fan for PC Case Small ITX Builds EVGA GPU Cooelr

For a brushless motor (so called), It sure produces a lot of electrical noise. I bought these to cool a couple audio amplifiers, but they introduce a rather loud and annoying buzz like a motor with brushes. If I can't filter it out, it will become just some more Chinese landfill and wasted money. Also beware of the inconsistency in terminal connections. They have no standard for positive and negative. I do not recommend.

I replaced a PSU fan with one of these. They're cheap and do the job. But I was initially disappointed at how noisy it was- not as noisy as the old one going bad, but far from silent. I could hear it from at least 15' away. So I opened it up to oil it and discovered that there is no rubber plug to keep the oil in! I added oil anyway. Hopefully, gravity will keep the oil in place, since it is horizontally mounted. But I don't have high hopes that it will. For now, anyway, it is quieter. I can still hear it from a few feet away, but it is not really noticeable. I suppose it's possible that the second one will be quieter. Hopefully, I'll never need to find out.

It's a two-pack of two-wire fans. I mean, this is simple stuff, right?Being two-wire, it's fairly unlikely you're buying these for a PC ... probably for some DIY cooling project. For me, they were going to be vertical air movement through my computer closet.And so imagine my thrill when I made the cutouts in the board I needed, mounted them with screws, wired them up and found that only one worked. Really? Yes, DOA happens, but this is a VERY simple piece of kit here, and apparently I was a fool for not testing them with a battery out of the box.Cheap fans from unknown brands... just don't do it. Buy a Noctua, or a Sunon ... or even a Rosewill. Just stay wide and clear of this no-name junk if you don't want to waste your time here and there.

For 12 dollar fans that aren't worth returning I need something that is made correctly. these literally have the wires reversed making the whole pre-installed 2 pin connector useless as the whole purpose is to make it simple. The ammount of work it took to find that problem alone is not worth 12 dollars.

These are very good fans for my needs. Quite powerful though, they put out more power upside down wich doesnt help me. but they still have plenty of power. I use them for cooling my electric scooter battery. I hooked it up to a separated 12v battery pack and it works flawlessly keeps battery temp 12degrees cooler. May not seem like much but it is better than blowing cells and also a safer longer runtimes.