I will be building a system around the new AMD Ryzen 3600 CPU. While I'd prefer a B450 motherboard, many of them are having BIOS problems. So I'm also looking at low-end X570 motherboards.
The X570 boards that look most promising are the MSI X570-A PRO and MPG X570 Gaming Plus. They're apparently identical, except the latter has "gaming aesthetics" and a larger heat sink. Both have 8+4 CPU power connectors.
I'm planning to get a Seasonic Focus Plus Gold PSU. All the PSU calculators agree that the 550-watt version should be more than adequate for any motherboard I choose. I'll be running the 3600 at stock speed with the stock cooler, with a Gigabyte Nvidia GTX 1050 video card (I don't game or edit video, so anything more powerful would be a waste of money). But the 550-watt PSU only has the 8-pin CPU power connector. The 750-watt version does include another CPU power connector for the second 4-pin socket on the motherboard.
I've read numerous forum posts insisting that the second 4-pin connector is necessary only for overclocking high-power CPUs. But I've also seen a few posts stating that some motherboards have stability problems or refuse to boot if that second socket isn't connected, even if it shouldn't be necessary. The manuals for the the MSI X570 motherboards shed no light on this question, and only specify connecting all 12 pins.
The 750-watt version would surely be overkill. But it turns off its fan when lightly loaded, and it occurred to me that the 750-watt version would effectively give me a fanless PSU at a lower cost than a decent true fanless PSU.
Advice please?
The X570 boards that look most promising are the MSI X570-A PRO and MPG X570 Gaming Plus. They're apparently identical, except the latter has "gaming aesthetics" and a larger heat sink. Both have 8+4 CPU power connectors.
I'm planning to get a Seasonic Focus Plus Gold PSU. All the PSU calculators agree that the 550-watt version should be more than adequate for any motherboard I choose. I'll be running the 3600 at stock speed with the stock cooler, with a Gigabyte Nvidia GTX 1050 video card (I don't game or edit video, so anything more powerful would be a waste of money). But the 550-watt PSU only has the 8-pin CPU power connector. The 750-watt version does include another CPU power connector for the second 4-pin socket on the motherboard.
I've read numerous forum posts insisting that the second 4-pin connector is necessary only for overclocking high-power CPUs. But I've also seen a few posts stating that some motherboards have stability problems or refuse to boot if that second socket isn't connected, even if it shouldn't be necessary. The manuals for the the MSI X570 motherboards shed no light on this question, and only specify connecting all 12 pins.
The 750-watt version would surely be overkill. But it turns off its fan when lightly loaded, and it occurred to me that the 750-watt version would effectively give me a fanless PSU at a lower cost than a decent true fanless PSU.
Advice please?