I have a first-generation ASUS PRIME B450-Plus with a Ryzen 7 5800X. I'm considering replacing the motherboard because I've read that this board's VRM and cooling limitations can hold back the processor, especially while running four RAM sticks. The CPU survives stress tests but tends to thermal-throttle around 4.4 GHz. Could the motherboard be responsible, or should I investigate the AIO cooler and other cooling factors first?
1 Answer
Before replacing the board, it would help to confirm the exact temperatures, voltage, power limits, and cooler performance. A Ryzen 7 5800X commonly runs hot and may deliberately boost or throttle around its temperature target, so seeing roughly 4.4 GHz alone doesn’t prove the VRMs are the problem. The AIO, pump speed, mounting, and dust buildup are worth checking first.
It’s a Ryzen 7 5800X. It handles stress tests, but it reaches thermal limits at about 4.4 GHz. I’m also wondering whether the AIO has lost coolant, though I started suspecting the motherboard after comparing its voltage behavior with benchmark results from similar systems.