Best price per watt
Power supplies ranked by dollars per watt — cheapest first — grouped by 80-PLUS efficiency tier so a bargain bronze unit isn't compared against a premium titanium one.
ATX PSU
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| Date | Price |
|---|---|
| Sep 9 | $0.13/W |
| Sep 8 | $0.13/W |
| Sep 5 | $0.15/W |
| Sep 4 | $0.15/W |
| Sep 3 | $0.15/W |
No priced power supplies with a listed wattage yet.
SFX PSU
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| Date | Price |
|---|---|
| Sep 9 | $0.22/W |
| Sep 8 | $0.23/W |
| Sep 5 | $0.23/W |
| Sep 4 | $0.23/W |
| Sep 3 | $0.23/W |
No priced power supplies with a listed wattage yet.
No power-supply prices are available yet. Check back once the PSU catalog is populated.
How we calculate price per watt
Price per watt ($/W) divides a power supply's lowest current price by its rated continuous wattage, giving you a like-for-like way to compare units of very different sizes — a $90 750 W unit works out to $0.12/W, cheaper per watt than a $70 450 W unit at $0.16/W even though it costs more outright.
We group power supplies by efficiency tier — 80 Plus Bronze, Gold and Platinum — because higher certification commands a premium that a raw $/W number alone would hide, and pairing tier with $/W shows what that efficiency actually costs. Prices update automatically from live retailer listings. $/W is a value guide, not a sizing tool: pick a wattage with comfortable headroom for your components first, then use $/W to find the best deal within the tier and capacity you need.