Extreme 650Rz Gold
The SilverStone Extreme 650Rz Gold is a 650W SFX power supply rated 80+ Gold, fully modular. We do not hold a measured noise grade for this unit, so treat noise as unknown rather than as bad. Full specs, quality score and current prices are below.
Prices update regularly and may differ at the retailer. This page contains affiliate links.

Quality score
How we score →A power supply has no performance benchmark: every 650W unit delivers 650W. This scores how well built and how liveable the Extreme 650Rz Gold is, out of 100, from six published factors.
Better always scores higher, but the steps are uneven on purpose: Bronze to Gold is worth 11 of the 25 efficiency points, Gold to Titanium only 6. A factor we hold no value for scores zero rather than being skipped, so a unit we know little about never outranks a fully specified one. That does mean a zero can mean either poor or unknown, which is what the confidence figure above is for. Physical size scores nothing: SFX is a fit decision, not a quality one.
Specifications
Output & Rating
- Continuous power
- 650 W
- Efficiency
- 80+ Gold
- Price per watt
- $0.269/W
Connectors
- CPU (EPS)
- 2 (4+4)
- PCIe
- 4 (6+2)
- 12V-2x6 / 12VHPWR
- —
- SATA
- 6
- Molex (4-pin)
- 3
Physical
- Form factor
- SFX
- Depth
- 100 mm
- Fan size
- 92 mm
- Modularity
- Fully modular
Electrical & Warranty
- Part number
- PS-EX650R-GM
Compare the Extreme 650Rz Gold against every other unit on the power supply comparison table. Not sure how much wattage you need? The power supply guide works through the sizing.
Where to buy the Extreme 650Rz Gold
Every in-stock retailer offer we track, cheapest first.
The Extreme 650Rz Gold starts from $174.76 across 2 retailers, which works out at $0.269/W. Prices update daily from live stock.
What the Extreme 650Rz Gold can power
Compare all GPUs →The graphics cards this 650W unit meets the system requirement for, ranked fastest first at 1440p, with the margin left over. The resolution follows the wattage, because a unit this size is bought for a card that will be run at 1440p. Headroom is measured against the card maker’s own whole-system recommendation, so 0 W means it meets that recommendation exactly rather than falling short.
| Graphics card | Card draw | PSU advised | Headroom |
|---|---|---|---|
| Radeon RX 9070 AMD | 220 W | 650 W | +0 W |
| GeForce RTX 5070 Nvidia | 250 W | 650 W | +0 W |
| GeForce RTX 4070 Super Nvidia | 220 W | 650 W | +0 W |
| Radeon RX 9070 GRE AMD | 220 W | 650 W | +0 W |
| GeForce RTX 4070 Nvidia | 200 W | 650 W | +0 W |
| GeForce RTX 5060 Ti 16GB Nvidia | 180 W | 600 W | +50 W |
| Radeon RX 9060 XT 16 GB AMD | 160 W | 450 W | +200 W |
| GeForce RTX 5060 Ti 8 GB Nvidia | 180 W | 600 W | +50 W |
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