expiredjohnny_miller | Staff posted Jan 27, 2024 06:00 AM
Item 1 of 2
Item 1 of 2
expiredjohnny_miller | Staff posted Jan 27, 2024 06:00 AM
850W MSI MPG A850GF Gaming Full Modular 80+ Gold Certified ATX Power Supply $59.99 + Free Shipping
$60
$140
57% offAmazon
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Pros:
Great brand and great product
Runs Quiet,
Gold Rating
10 Year Warranty
Cables are nice to work with
Great price for wattage
Pros:
Great brand and great product
Runs Quiet,
Gold Rating
10 Year Warranty
Cables are nice to work with
Great price for wattage
Multi-rail
Multi-rail
This particular power supply seems to have pretty high limits on the individual GPU rails (40A/480W), so it might be fine. Some power supplies can be switched between single and multi via a switch or software that defeats the over-current protection. (This one doesn't appear to do so, though the MSI MEG does.) I've seen many forum posts where people said they had all sorts of issues with their high-end GPU until they switched to single-rail mode, and then the problems disappeared. Personally, I won't buy a multi-rail unless it can be switched to single-rail mode if the need arises.
I've attached an image of this particular power supply's output specs that shows the maximum power limits for each rail. The 12VMBPH rail supplies the motherboard and peripherals (SATA/Molex) with a maximum current of 25A/300W. The CPU rail is also 25A/300W, and the two GPU rails are 40A/480W each. Of course, the total combined output can't exceed 850W. For reference, I've attached a second image from a single-rail 850W power supply, it just shows +12V 70.8A/849.6W, with the motherboard, peripherals, CPU and GPU all being on that one rail.
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