Select a suitable PC building motherboard
Select a suitable PC building motherboard
Germany is my country, and having two M.2 slots fits well with the processor support I need. Upgrading this PC isn’t likely, so I just require a solid motherboard for my 7800X3D. For requirements, I’m looking for a gaming-focused board that runs efficiently and stays cool, while also accommodating all my PC components.
For Germany, the options align closely with the list provided. The Pro RS stands out, PG Lightning is solid, MSI PRO B650-S works well, MSI GAMING PLUS WIFI is a solid pick, LiveMixer also performs nicely. Options featuring HDV/M.2 and TUF GAMING B650 PLUS WIFI are recommended. There are many choices available, making it straightforward to find something with robust power delivery—ideally 8+4PCIe or 8+8PCIe for the CPU, paired with a good VRM cooler. You can easily search online and locate reputable sites like MSI PRO B650-S, which typically have clear support information and thermal ratings. Aim for models with 12+2 power rails or similar, ensuring stable performance without throttling, especially during gaming sessions.
I recently learned that the B650 GAMING PLUS WIFI doesn’t support Dr.MOS. It’s recommended to purchase the MAG B650 TOMAHAWK WIFI, which does support this feature and offers a 14+2+1 phase 80A setup.
7800x3D is a straightforward chip that mainly depends on thermal and TDP constraints. Even with a direct-die upgrade or intense cooling, its performance is still capped by its 50.5x factor and maximum TDP. The only standout capability found on premium boards is the V-core load line offset, which became valuable only after a direct-die installation because PBO2 appeared to reach its limits no matter the setup. The chip really thrives with a motherboard that supports PBO2 and allows lowering the SoC voltage. Between 1.1 and 1.2V reductions can cut the max SoC voltage by around 6W (down to 12W instead of 18W). This adjustment noticeably impacts the average boost clocks of the CCDs I’ve tested, which is why most B or X series boards need these features.
It sounds like you're trying to understand why buying a different motherboard might not be worth it. The MSI MAG B650 TOMAHAWK is a high-end board, but the MSI B650 GAMING PLUS offers features like PBO2 and SoC voltage reduction, which could be useful depending on your needs.
Absolutely, and SoC undervolting isn't widely used either; I've discovered it works well. Many users stick with a standard +200MHz -15mV PBO2 curve offset and consider that enough. Most motherboards can't handle that, so you need at least a B650 to support PBO2. The 5000x3D and 7000x3D CPUs are low power due to the 3D v-cache feature. The 9000x3D could change that, but currently, most boards don't require extreme specs to deliver full performance. A basic B650 board should easily run on a 7800x3D or even a $1000 X670e setup. Features in between tend to target unlocked CPUs, which covers nearly all other configurations except those with 3D v-cache.