The X7 power supply series from Huntkey is comprised of three models: 800 W (80 Plus Bronze), 900 W (80 Plus Silver), and 1,200 W (80 Plus Gold). All of them have a modular cabling system and make use of an interleaved PFC circuit and phase-shift full-bridge switching design in the primary. Let’s dissect the 900 W model, which has five +12 V rails.
The Huntkey X7 900 W is 6.3” (160 mm) deep, using a 140 mm ball bearing fan on its bottom (Yate Loon D14BH-12).
As mentioned, this unit has a modular cabling system with eight connectors, one for the ATX/EPS12V power cable, four for video cards, and three for peripheral and SATA power cables. Only the main motherboard cable is permanently attached to the power supply. This power supply comes with the following cables:
- Main motherboard cable with a 20/24-pin connector, 19.3” (49 cm) long, permanently attached to the power supply
- One cable with two ATX12V connectors that together form an EPS12V connector, 26.8” (68 cm) long, modular cabling system
- Two cables, each with one six-pin connector for video cards, 22.8” (58 cm) long, modular cabling system
- Two cables, each with one six-pin connector and one six/eight-pin connector for video cards, 22.8” (58 cm) to the first connector, 5.9” (15 cm) between connectors, modular cabling system
- Two cables, each with three SATA power connectors and one standard peripheral power connector, 19.7” (50 cm) to the first connector, 5.9” (15 cm) between SATA connectors, 9.8” (25 cm) to the peripheral connector, modular cabling system
- One cable with three standard peripheral power connectors and one floppy disk drive power connector, 19.7” (50 cm) to the first connector, 5.9” (15 cm) between connectors, modular cabling system
All wires are 18 AWG, which is the minimum recommended gauge, except the +12 V (yellow) wires on the main motherboard connector, which are thicker (16 AWG).
The cable configuration is good for a 900 W power supply, with six video card power connectors, allowing the installation of three high-end video cards that require two power connectors each. We think, however, that the number of SATA power connectors, six, is too low for a 900 W unit.
Let’s now take an in-depth look inside this power supply.
- 1. Introduction
- 2. A Look Inside the Huntkey X7 900 W
- 3. Transient Filtering Stage
- 4. Primary Analysis
- 5. Secondary Analysis
- 6. Power Distribution
- 7. Load Tests
- 8. Ripple and Noise Tests
- 9. Overload Tests
- 10. Main Specifications
- 11. Conclusions