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I'm on a 3950x and the 645lt also, I have the block at the bottom of the case, a NF-A9x14 on top of that in intake mode and a second NF-A9x14 under my motherboard also in in take mode. Idle temps are around 55-60c and up around 75c during gaming in cyberpunk. As far as I heard, the 5000 ryzen run hotter than the 3000 by a little bit due to better single thread performance and also the 3950 is cooler than other cpus since it has more cores but running slower.In one way it's very impressive that this entire setup can run at all! It'd be worth your while waiting until you have windows installed to see if you have any real world problems with your system like throttling or crashing.
I'm on a 3950x and the 645lt also, I have the block at the bottom of the case, a NF-A9x14 on top of that in intake mode and a second NF-A9x14 under my motherboard also in in take mode. Idle temps are around 55-60c and up around 75c during gaming in cyberpunk. As far as I heard, the 5000 ryzen run hotter than the 3000 by a little bit due to better single thread performance and also the 3950 is cooler than other cpus since it has more cores but running slower.
In one way it's very impressive that this entire setup can run at all! It'd be worth your while waiting until you have windows installed to see if you have any real world problems with your system like throttling or crashing.
