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Switching Power Supplies A - Z, Second Edition
Switching Power Supplies A - Z, Second Edition, by Sanjaya Maniktala (Newnes), starting at $54.35
Home » Power
Seasonic X-Series 750 W Power Supply Review
Author: Gabriel Torres
Type: Reviews Last Updated: July 11, 2012
Page: 1 of 11
Introduction
Hardware Secrets Golden Award

The Seasonic X-Series brings the 80 Plus Gold certification and a full modular cabling system. It was the first power supply series where the DC-DC converter was installed on the same printed circuit board as the modular cabling system. We’ve already reviewed the 560 W, 650 W, and 850 W models, and they all got great results. Let’s see if the X-Series 750 W is also a winner.

Seasonic X-Series 750 W power supply
click to enlarge
Figure 1: Seasonic X-Series 750 W power supply

Seasonic X-Series 750 W power supply
click to enlarge
Figure 2: Seasonic X-Series 750 W power supply

The Seasonic X-Series 750 W is 6.3” (160 mm) deep, using a 120 mm Japanese ball-bearing fan on its bottom (Sanyo Denki San Ace 120, model 9S1212P4M61).

The reviewed power supply has a fully modular cabling system, meaning that even the main motherboard cable is removable. All cables are protected with nylon sleeves. This power supply comes with the following cables:

  • Main motherboard cable with a 20/24-pin connector, 22” (56 cm) long
  • One cable with one ATX12V connector, 22” (56 cm) long
  • Two cables, each with one EPS12V connector, 22” (56 cm) long
  • Four cables, each with one six/eight-pin connector for video cards, 21.6” (55 cm) long
  • Two cables, each with three SATA power connectors, 21.3” (54 cm) to the first connector, 5.9” (15 cm) between connectors
  • One cable with two SATA power connectors, 13.8” (35 cm) to the first connector, 5.9” (15 cm) between connectors
  • Two cables, each with three standard peripheral power connectors, 21.3” (54 cm) to the first connector, 5.9” (15 cm) between connectors
  • One cable with two standard peripheral power connectors, 13.8” (35 cm) to the first connector, 5.9” (15 cm) between connectors
  • One adapter to convert one standard peripheral power connector into two floppy disk drive power connectors

All wires are 18 AWG, which is the minimum recommended gauge. The number of connectors is adequate for a 750 W power supply, allowing you to install two high-end video cards that require two auxiliary power connectors each without the need for adapters.

Seasonic X-Series 750 W power supply
click to enlarge
Figure 3: Cables

Let’s now take an in-depth look inside this power supply.

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