CX650M
The Corsair CX650M is a 650W ATX power supply rated 80+ Bronze, semi-modular. Independent lab testing puts it at standard++ for noise, averaging 33.4 dB(A) across the load range, meaning clearly audible under load. 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 CX650M 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: ATX is a fit decision, not a quality one.
Measured in the lab
Everything else on this page is a specification the manufacturer published. These figures were measured from the CX650M itself by Cybenetics, an independent test lab.
- Average efficiency
- 85.7%Averaged across the full load range
- Average noise
- 33.4 dB(A)Cybenetics grade standard++, averaged across the load range
- Zero-RPM mode
- NoThe fan runs at every load
- Fan bearing
- RifleWhat the fan spins on, and how long it lasts
Each figure is an average over more than 1,450 load combinations, which is not the same measurement as the 80+ Bronze badge on the box. That badge certifies the unit at a handful of fixed load points; this covers the whole range, including the light loads a desktop spends most of its time at. Lab figures exist for roughly a fifth of the units we track, so their absence on another page means that unit has not been through this lab, not that it did badly.
Specifications
Output & Rating
- Continuous power
- 650 W
- Efficiency
- 80+ Bronze
- ATX 12V standard
- ATX 2.4
- Price per watt
- $0.123/W
- MSRP
- $79.99
Connectors
- Motherboard
- 24-pin
- CPU (EPS)
- 2 (4+4)
- PCIe
- 2 (6+2)
- 12V-2x6 / 12VHPWR
- —
- SATA
- 6
- Molex (4-pin)
- 4
Physical
- Form factor
- ATX
- Depth
- 140 mm
- Fan size
- 120 mm
- Modularity
- Semi-modular
- Cable colour
- black
- Colour
- black
- RGB
- No
Platform
- Built by
- Channel Well Technology
- Topology
- APFC, Double Forward
- Minor-rail regulation
- DC-DC
- Secondary rectification
- Synchronous Rectification
Electrical & Warranty
- Input voltage
- 100-240 V
- Input frequency
- 47-63 Hz
- Part number
- CP-9020221-NA
Compare the CX650M 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 CX650M
Every in-stock retailer offer we track, cheapest first.
| Retailer | Availability | Price | Buy |
|---|---|---|---|
| Amazon | In stock | $79.99 |  |
The CX650M starts from $79.99 across 1 retailer, which works out at $0.123/W. Prices update daily from live stock.
What the CX650M 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 |
Affiliate disclosure: Some links on this page are affiliate links — MaxMyBuild may earn a commission at no extra cost to you if you buy through them. As an Amazon Associate, MaxMyBuild earns from qualifying purchases. For Amazon, current price and availability are shown on the Amazon product page; product prices and availability are accurate as of the date and time of purchase and are subject to change. Prices shown for other retailers are approximate and may differ at checkout. “Search” links are non-affiliate and provided for convenience only.