Best answer: The Corsair Obsidian 1000D supports up to four 480 mm radiators simultaneously. The default configuration is two 480 mm radiators at the front and one 420 mm radiator at the top.
Best PC case money can buy: Corsair Obsidian 1000D $515 at Newegg
Best Radiator for the Obsidian 1000D: Corsair Hydro X Series XR7 $140 at Newegg
Corsair Obsidian 1000D radiator support
The Corsair Obsidian 1000D is a massive case with room for two whole systems, which means that you're going to need a ton of cooling and airflow. The Obsidian 1000D keeps plenty of room for just that. There's space for radiators at the front, top, and rear. The case is also big enough to let you house four 480mm radiators at the same time, which is one of the reasons why it's one of the best PC cases out there.
What's more, there's support for pretty much all the radiator sizes you could find — 120mm, 140mm, 240mm, 280mm, 360mm, 420mm, and 480mm. The case includes slide-out radiator trays for quick and easy radiator mounting, with additional trays available for purchase according to your choice of radiator combinations.
Corsair Obsidian 1000D radiator configurations
Corsair Obsidian 1000D comes with the default radiator configuration of up to two 480 mm radiators at the front, a 420mm radiator at the top, and a 240mm radiator at the rear. The front and top have slide-out trays, while the rear has room for two 120 mm fans to go with the 240mm radiator.
Corsair also lists additional configurations on the website. The rear configuration stays the same, but you get a lot more options to mix and match radiator configurations at the front and the top. Even with the maximum capacity, you will have enough room for all the components you could fit in this case. If you can't decide, check out our guide on how to choose the right radiator, picking the best radiators for your system.
Corsair Obsidian 1000D
Overkill PC case
The Corsair Obsidian 1000D is a beast of a case, and it can fit two complete systems. There's plenty to go around with room for up to four 480mm radiators when it comes to radiator space. If you want to go all out on a PC build and if cooling is a priority, then you should definitely go for the Corsair Obsidian 1000D
Best Corsair radiators
Corsair Hydro X Series XR7
Cool your Obsidian
The Corsair Hydro X Series XR7 is the best radiator lineup from Corsair. If you're looking for the perfect radiators for your Obsidian 100D, look no further. It comes in three sizes, 240mm, 360mm, and 480mm. If you want to go for 120mm, 140mm, or 240mm sizes, you can look at the XR5 range instead.
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