Last year, I built a system with a Kraken X52 cooling a Ryzen 1600X in a Corsair Obsidian 250D case, but the case was a few millimeters too narrow to fit the stock fans, so I got a couple of 15mm Prolimatech static pressure fans, based on recommendations from here. I just upgraded to a Corsair Crystal 280X for a bit of extra room, because the system always seemed to run a bit hot, and why not add a bit of unicorn vomit? The case came with a pair of Corsair LL120s in the front. I bought a couple of extra LL120s to be top-mounted, and hung the radiator off them in a pull configuration. I believe everything is hooked up more or less properly. Because my motherboard is fan header-limited, I put all four fans on the Kraken. But when I ran a small FFT Prime95, the heat slowly but steadily rose, and after about 3 minutes, the Tdie hit 73.3C and the computer froze. The CPU is set up using P-state overclocking to run at 3.9GHz and otherwise seems to run OK. After rebooting, I tried an impromptu "stress" test of running Minecraft on peaceful mode for about a half hour. Tdie stabilized pretty quickly at around 48C. Other games I play (at the moment, mainly Guild Wars 2 and Diablo 3) seem to run fine and at about the same temp, so the system is essentially real-world stable, although I guess if I do any video transcoding I could run into issues. Anyone have some ideas on things I can look at to try to be able to keep the system from crashing during a stress test? If possible I'd like to OC the system a bit more, I just haven't spent much time on it yet. It does seem to run pretty well at 3.9GHz (it's been a while since I looked but I think I'm getting by with only 1.35V at that speed, so I'm hoping I can get to 4 or maybe 4.05GHz). I picked a pull configuration on the radiator as a few comparison tests I've watched on YT generally seemed to only show a difference of a degree or so between push and pull configurations, and pull lets me see the LEDs on the case top. Admittedly the fans are AF, not SP, but I don't know how much practical difference that will make. I still have the Prolimatech SP fans and there's room to put one of them back as a pusher on the radiator.