My PC has stopped powering on, and I'm trying to determine whether the power supply is the problem. I'm considering replacing it with an MSI A750GL and want to confirm that it will work with my Aorus B450 Pro WiFi motherboard. I've seen claims that some power supplies may not provide the right power to a motherboard, possibly because of missing pins or a required -12V connection, so I'd like to understand whether that is a real concern and how to avoid compatibility issues.
My system uses an NZXT H500 case, Ryzen 5 2600 processor, RTX 2060 graphics card, and 16GB of T-Force DDR4 memory. I know 750W should be more than enough for this hardware, but I may upgrade other components later. I'm also open to recommendations for alternative power supplies.
2 Answers
Power supplies are broadly universal for standard desktop systems. The important checks are that the unit has the correct connectors and enough wattage for the components; the A750GL meets both requirements here. The 24-pin connector does not need to match every older discussion you may find about unusual pin layouts, and the -12V rail is not something you normally need to troubleshoot for a current consumer build.
You could also consider another reputable 650W–750W Gold-rated model if it is better priced or reviewed in your region. The extra wattage is fine, but your current CPU and GPU do not require anything close to 750W.
The MSI A750GL should be fully compatible with that motherboard and system. Modern ATX power supplies are generally designed to work with standard motherboards as long as they include the required 24-pin motherboard connector and CPU power connector. A Ryzen 5 2600 and RTX 2060 are nowhere near the limit of a quality 750W unit, so capacity will not be an issue.
Concerns about a motherboard not receiving enough power usually involve the board’s own power-delivery circuitry or an incorrectly connected CPU power cable, not a normal PSU being unable to supply power. A new PSU is a reasonable troubleshooting step, but also check the wall outlet, power switch, front-panel connection, and both motherboard power connectors before replacing parts.
That clears things up. I built the system several years ago and wasn’t sure whether PSU standards or motherboard requirements had changed. I’ll check the connections and other basic causes as well.
The information I saw was discussing a missing pair of pins and a supposed -12V requirement, but it may have applied to a different board or situation. Knowing that it is not a normal compatibility problem helps.