Roundup: 12 Gaming Power Supplies Compared
Gamers demand a lot from their computers, starting with the PSU. Therefore, almost every PSU manufacturer sells products optimized for gaming PCs. We introduce ripple and noise testing in this roundup to further improve our power supply evaluations.
Seasonic X-750
The $170 Seasonic X-750 provides a positive first impression when we unpack it. The 750 W PSU is stowed away in a black velvet case, while the cables come in two nylon packs. Except for Corsair, Seasonic is the only manufacturer in this roundup to use a fully modular cable management system, with even the ATX and CPU cables being modular (though the value of this is questionably, since you're probably not going to use a power supply without hooking it up to your motherboard).
The fan on the Seasonic X-750 only starts running at loads above ~250 W, otherwise staying perfectly silent. The 750 W PSU is 80 PLUS Gold-certified, and its single +12 V rail (preferable to all of the units with dinkier +12 V output spread over multiple rails) can handle up to 62 A.
| Seasonic X-750 | ||||||||
|---|---|---|---|---|---|---|---|---|
| AC Input | 200-240V, 50-60 Hz | |||||||
| DC Output | +3.3 V | +5 V | +12 V (#1) | +12 V (#2) | +12 V (#3) | +12 V (#4) | -12 V | +5 Vsb |
| 25 A | 25 A | 62 A | n/a | n/a | n/a | 1.0 A | 3.0 A | |
| Individual Output | Row 3 - Cell 1 | Row 3 - Cell 2 | Row 3 - Cell 3 | Row 3 - Cell 4 | Row 3 - Cell 5 | n/a | n/a | |
| Rail Utilization | Sys | Sys | CPU & VGA | |||||
| Combined Output | 125 W | 744 W | ||||||
| Total Continuous Output | 750 W | |||||||
| Peak Output | n/a |




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