
Introduction
Amacrox is a new player on the power supply market, with its products being manufactured by FSP. Will their Free Style 85PLUS 650 W (a.k.a. AX650-85EP) unit survive our tests?
Figure 1: Amacrox Free Style 85PLUS 650 W power supply.
Figure 2: Amacrox Free Style 85PLUS 650 W power supply.
Amacrox Free Style 85PLUS 650 W is 6 ½” (16.5 cm) deep, having a 120 mm fan on its bottom, active PFC and a modular cabling system, with some cables being permanently attached to the power supply – these cables use a nylon protection that comes from inside the unit. The cables included on Free Style 85PLUS 650 W are:
- Main motherboard cable with a 20/24-pin connector (permanently attached to the power supply) (19 ¾” or 50 cm).
- One cable with two ATX12V connectors that together form an EPS12V connector (permanently attached to the power supply) (21 ½” or 55 cm).
- One cable with one six/eight-pin power connector for video cards (permanently attached to the power supply) (21 ½” or 55 cm).
- One cable with one six/eight-pin power connector for video cards (modular cabling system) (17 ½” or 44.5 cm).
- Two cables with four SATA power connectors each (modular cabling system) (17 ½” or 44.5 cm to the first connector, 5 7/8” or 15 cm between connectors).
- Two cables with three standard peripheral power connectors each (modular cabling system) (17 ½” or 44.5 cm to the first connector, 5 7/8” or 15 cm between connectors).
- Two adapters to convert any peripheral power connector into a floppy disk drive power connector.
The number of cables is adequate for a 650 W product, and having eight SATA power connectors is really good. All wires are 18 AWG, which is the correct gauge to be used.
Now let’s take an in-depth look inside this power supply.
- Contents
- 1. Introduction
- 2. A Look Inside The Free Style 85PLUS 650 W
- 3. Transient Filtering Stage
- 4. Primary Analysis
- 5. Secondary Analysis
- 6. Power Distribution
- 7. Load Tests
- 8. Overload Tests
- 9. Main Specifications
- 10. Conclusions








