Most of the parts in this build were brought over from my last system, which was an AMD-based mid tower. I knew I wanted to go mini-ITX so I could bring my PC more places but I wanted to keep the Corsair H100i GTX that I had won in a giveaway; the Corsair 250D fit the bill perfectly. I'll admit it was a little bigger than I had hoped, but I was really impressed with the build quality and I love it to death. I did run into some issues, which I expected to, and by posting this log I hope to help anyone worried about building a PC with this case and an h100i GTX.
There are two spots where the h100i GTX tubes cause clearance issues: 1) Rear-mounted tubes - If you want to mount rad with the tubes towards the back of the case, you will have to make sure the metal parts of the rear I/O are short enough to let the tubes lay on top of the PS2 or USB ports, whichever your board has. You can not bend the tube around that block because it'll run into the radiator fan. I wanted to mount the radiator in this orientation but didn't, because the only motherboards with a short enough I/O are extremely overpriced.
2) Front-mounted tubes - If you want to mount the rad with the tubes towards the front of the case, you will not be able to keep the intake fan, neither 120mm or 140mm UNLESS you're willing to mount the radiator in an unconventional position like I did. If you look closely at my photo, my radiator is only held in place by two screws, and it's pushed further towards the back of the case than normal. This gave me enough clearance to keep the full 140mm intake fan! I highly recommend mounting the radiator like I did. It's still very secure and I'm grateful for the extra clearance it gave me. But then again, your motherboard might have a short enough I/O to achieve the rear-mounted tube orientation.
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