Product Introduction
Thank you for purchasing the GameMax GX RAMPAGE Series power supply. This high-quality unit offers great value for gamers and system builders, joining the elite ranks of GameMax 80 Plus Gold power supplies with up to 90% power conversion efficiency. It features a fluid dynamic bearing 135mm fan, a fully modular 100% Free-Cable internal PCB design, 12V CPU power, and PCIe 6+2pin connectors ready for high-end gaming systems. Fully electrical protection and official safety are guaranteed by GameMax.
Features
- Compliant with Intel ATX 12V V3.0/3.1 specification
- Full Range Power Input (100-240V)
- Compatible with PCIe 5.0/5.1 specification, supporting the latest flagship graphics cards
- 13.5CM Silent fan with a smaller hub that facilitates longer blades and a barrier ring that increases downward air pressure
- Full Modular Free-Cable design
- 105°C Mainstream Capacitor for long life and smooth output
- Total Six levels of protection (OTP, OCP, OVP, UVP, SCP, OPP)
- Components produced by SMT for quick heat dissipation and stability
Safety Reminders
Before Installation
- Ensure PSU wattage and output meet system requirements.
- Disconnect the power cord and turn off the PSU switch.
- This PSU is designed for NON-INDUSTRIAL desktop systems. Usage outside these parameters (e.g., cryptocurrency mining) may cause overheating, malfunction, damage, and void the warranty.
- Do NOT attempt to expand connectors via adapters or other means.
- Do NOT operate in wet or damp conditions.
- Do NOT open the PSU casing; it contains hazardous voltages with no serviceable components inside.
- Do NOT remove the warranty sticker; damage or removal will void the warranty.
Please visit the official GameMax website www.gamemaxpc.com for details on your PSU warranty policy.
What's in the Box?
- (1) Power Supply
- (2) User Manual
- (3) Mounting Screws
- (4) Modular Cable Bag
- (5) Philips Screwdriver
- (6) Antistatic Glove
How to Install / Connector Description
Step 1: Initial Setup
Before installing the PSU, unplug the AC Power cord and make sure the I/O switch is off. ⚠️
Connecting to Motherboard
20+4-pin Connector
Connect the 20+4-pin connector to the motherboard. Note: The detachable 4-pin connector of the 20+4-pin is not suitable for the ATX12V 4-pin connector. Incorrect connection may cause irreversible damage.
ATX12V 4/8-Pin Connector
Connect the ATX12V (CPU power) 4-pin or 8-pin (by 4+4-pin detachable) to the motherboard.
Connecting to Graphics Card
PCIe 6/8-pin (by 6+2-pin) Connector
Connect the PCIe 6-pin or 8-pin (by 6+2-pin) to the graphics card. Note: Do not connect the PCIe 6+2-pin connector to the ATX12V 8-pin connector. Incorrect connection may cause irreversible damage.
12V-2x6 (PCIe 5.0/5.1) Connector
Connect the 12V-2x6 (PCIe 5.0/5.1) to the graphics card.
Cable Management Tips for 12V-2x6
Reserve a distance of 35mm for 12V-2x6 cables and install the correct bending method during cable management:
- ❌ Do not bend vertically
- ❌ Do not bend horizontally
- ▶️ Bend starting at 35mm from connector
Connecting to Devices
SATA Connector
Connect the SATA connector to devices, e.g., HDD/SSD/ODD.
Molex 4pin Connector
Connect the Molex 4pin connector to devices, e.g., HDD/ODD/case fan.
Specifications
AC Input Characteristics
100-240VAC, 15-5A, 50-60Hz
DC Output Characteristics
| MODEL | +3.3V | +5V | +12V | -12V | +5VSB | 3.3/5V Max.Power | Total Power |
|---|---|---|---|---|---|---|---|
| GX750 | 20A | 20A | 62A | 0.3A | 2.5A | 100W | 750W |
| GX850 | 20A | 20A | 70A | 0.3A | 2.5A | 100W | 850W |
| GX1050 | 20A | 20A | 87.5A | 0.3A | 2.5A | 100W | 1050W |
| GX1250 | 20A | 20A | 104A | 0.3A | 2.5A | 100W | 1250W |
Dimensions
The power supply unit has dimensions of approximately 86mm (width), 160mm (depth), and 150mm (height).
Modular Cable Configuration
Warning
⚠️ GX RAMPAGE PSU is a modular version. Use only original GameMax modular cables to avoid incompatibility and damage to your PC system!
Cable Overview
| CONNECTOR | MAINBOARD | CPU | PCI-E | 12V-2x6 | SATA | PERIPHERAL | FDD |
|---|---|---|---|---|---|---|---|
| PIN | 24(20+4)Pin | 8(4+4)Pin | 8(6+2)Pin | 16(12+4)Pin | 5Pin | 4Pin | 4Pin |
| GX750 | 1 | 2 | 4 | 1 | 6 | 3 | 0 |
| GX850 | 1 | 2 | 4 | 1 | 6 | 3 | 0 |
| GX1050 | 1 | 2 | 4 | 1 | 10 | 3 | 1 |
| GX1250 | 1 | 2 | 4 | 1 | 10 | 3 | 1 |
