GameMax RPG Rampage 850W Fully Modular 80+ Bronze PSU
GameMax
GameMax RPG Rampage 850W Fully Modular 80+ Bronze PSU
The GameMax RPG Rampage is an 850W fully modular power supply built for gaming PCs that need reliable, efficient power with clean cable management. It uses a single 12V rail, Japanese capacitors, and 80 Plus Bronze efficiency to deliver stable performance without the bulk of semi-modular designs.
Why this product
Fully modular cables for easy builds
Every cable detaches, so you only route what you need. This cuts clutter, improves airflow, and makes upgrades simpler than semi-modular rivals.
80 Plus Bronze: 85% efficient
Certified to convert 85% of mains power to usable DC output, cutting wasted heat and power bills on sustained gaming loads.
Japanese TK capacitors for longevity
Premium capacitors normally found in higher-tier units improve reliability and lifespan, backed by a 2-year warranty and 100,000-hour MTBF.
Single 12V rail for GPU compatibility
A single rail simplifies current delivery to high-end graphics cards and avoids the rail-switching complexity of multi-rail designs.
Ultra-quiet 14cm fan at 40dBA
Large, slow-spinning fan keeps noise low even under load, ideal for rigs where fan noise matters during gameplay or streaming.
- Capacity850W
- ModularFully
- Efficiency80 Plus Bronze (85% at 50% load)
- Noise Level40dBA
- Cooling Fan14cm
- Warranty2 Years
- SKUGAM-748
- EAN5055492413970
- Fits standard ATX cases with a PSU bay sized 150mm × 87mm × 160mm (W × H × D).
- Supplies up to four 6+2 pin PCIe connectors for dual-GPU or high-power single-GPU setups.
- Main connector is 20+4 pin ATX; works with all modern motherboards.
- Rated for 0–30°C operation; not suitable for unheated outdoor storage or overheated server rooms.
Best for
- Gaming PCs with high-end GPUs needing stable 12V rail current.
- Builders valuing clean aesthetics; flat black cables and all-black finish suit minimalist or RGB-lit cases.
- Users upgrading from semi-modular designs; fully modular routing cuts cable clutter and improves airflow.
- Mid-range gaming builds on a budget; 80 Plus Bronze efficiency and component quality exceed the typical entry-level tier.
Trade-offs
- Extreme or server loads above 850W; this unit maxes out at 850W total output.
- Fanless or silent-first builds; the 40dBA fan will be audible in acoustically isolated rooms.
- Long-warranty seekers; 2-year coverage is shorter than many competitors' 5–10 year standards.
GameMax 850W RPG Rampage Full Mod 80+ Bronze PSU
Building on the success of the GameMax RPG Rampage 750W and 850W semi-modular 80 Plus Bronze power supplies, we have upgraded both models to full-modular cabling, increasing airflow and improving the overall thermal performance.
The GameMax Rampage is built using the highest quality components to deliver Real Power Gaming to your PC. Not only is this power supply impressive in its performance but the components used in this power supply are components normally found in top tier brands without breaking the bank.
Warranty: The GameMax Rampage PSU Range comes with 2 Years Warranty.
General
| Brand | GameMax |
|---|---|
| Model | RPG Rampage 850W |
| Part Number | GMXRPG850FMOD |
| Colour | Black |
Performance
| Power Output | 850W |
|---|---|
| Efficiency Rating | 80 Plus Bronze |
| Efficiency at 50% Load | 85% |
| 12V Rail Configuration | Single Rail |
| PCIe 6+2 Pin Connectors | 4 |
| 12V 4+4 Pin Connectors | 2 |
| SATA Connectors | 6 |
| Molex 4-Pin Connectors | 6 |
Durability
| Main Capacitor | Japanese TK |
|---|---|
| MTBF | 100,000 Hours |
| Warranty | 2 Years |
| Safety Certifications | CB / UKCA / CE / FCC |
| Protection Features | OVP / OPP / UVP |
Physical & Thermal
| Dimensions | 150mm × 87mm × 160mm (W × H × D) |
|---|---|
| Net Weight | 1.67 kg |
| Cooling Fan Size | 14cm |
| Noise Level | 40dBA |
| Operating Temperature Range | 0–30°C |
| Modular Cabling | Fully Modular |
| Cable Type | Flat Black Cables |
Shipping
All our products are shipped from the United Kingdom within 24 to 48 hours of purchase. See our Shipping and Returns page for full details.
Returns
- Tech Syndicate offers a full money-back guarantee on all purchases made in our store. If you are not satisfied with your purchase, we will provide a full refund, no questions asked.
- Refunds are available within 45 days of delivery.
- After the 45-day period you are no longer eligible for a refund, so we encourage you to try the product within the first few weeks to make sure it fits your needs.