Modern CPUs are incredible feats of engineering and capable of doing far more than just running an operating system and a game or two. There's just one minor drawback to them, though, and it's that all processors convert electrical energy into glopping blobs of heat all the time.We're curating all the best Prime Day PC gaming deals hereThat's not good for the chip, so you need something to shift it away from the silicon and dump it...err...elsewhere (hint: your office or gaming den). But thanks to the Prime Day sales, you can get some of the best AIO liquid CPU coolers with a very healthy discount.Whichever chip chiller you pick, your CPU is in for a treat.The best CPU coolers for the best price Best overall Arctic Liquid Freezer III Pro 360 Best budget Cooler Master Cooler Master 360 Core II Best high-end Be Quiet! Light Loop 360mm The full detailsIt's not the prettiest-looking AIO cooler, and it's not always the best performance in terms of cooling vs noise, but even at its normal price, Arctic's Liquid Freezer III Pro 360 is an outstanding cooler. The VRM fan is nice to have, though it's quite fiddly to install the whole thing, because of the thickness of the radiator and the required contact frame.Key specs: 360 mm radiator | 3x 120 mm fans | AM4, AM5 | LGA 1851, 1700View DealDon't be fooled by the low price tag. Cooler Master's 360 Core II is a great all-round chip chiller, with excellent socket compatibility, solid performance, and spangly looks. Only the length of the tubes is disappointing. The white version is the same price, and both are for Amazon Prime members only.Key specs: 360 mm radiator | 3x 120 mm fans | RGB | AM4, AM5 | Intel LGA 1851, 1700, 1200, 1151, 1150, 1155, 1156View DealIf you want an AIO cooler that can handle any AMD Ryzen or Intel Core/Core Ultra chip, then you want the Be Quiet! Light Loop 360mm. The fans are somewhat noisy at full speed, and it's not the easiest of coolers to install, though.Key specs: 360 mm radiator | 3x 120 mm fans | RGB | AM4, AM5 | LGA 1851, 1700, 1200, 1150, 1151, 1155View DealUnless you're using a power-hungry AMD Ryzen 9 9950X3D2 Dual Edition or Intel Core i9 14900K, then any of these AIO coolers will have no problem coping with the heat your processor spits out. And if you do just happen to have either of those chips, then don't worry: the Arctic or Be Quiet! are both capable of taking them on.I use the Liquid Freezer III Pro 360 mm in my own main rig, with an Intel Core Ultra 270K Plus, and it's honestly pretty quiet and very effective, even when the chip's loaded to the hilt compiling an Unreal Engine build.Now, if only there were an AIO cooler for my head that can deal with the raging heatwave that's cooking my office at the moment...