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ASUS ROG Thor 1200W Platinum II vs Corsair CX550M: Comparison
ASUS ROG Thor 1200W Platinum II and Corsair CX550M separate most on pcie 8-pin connectors: ASUS ROG Thor 1200W Platinum II at 8, Corsair CX550M at 2, 75% in favour of ASUS ROG Thor 1200W Platinum II. Hold-Up Time splits them by another 59%, again favouring ASUS ROG Thor 1200W Platinum II. They match on 6 other specifications, including atx standard, form factor and single +12v rail. On price, Corsair CX550M sits at $54.99 against $349.99 for ASUS ROG Thor 1200W Platinum II.
Specs
| Specification |  |  |
|---|---|---|
| Brand | ASUS | Corsair |
| Wattage | 1200 W | 550 W-54% |
| 80 PLUS Rating | Platinum | Bronze |
| ATX Standard | ATX 2.x | ATX 2.x |
| Form Factor | ATX | ATX |
| +12V Rail Amperage | 100 A | 45.8 A |
| Single +12V Rail | Yes | Yes |
| Cybenetics Efficiency | Platinum | Silver |
| Cybenetics Noise | A++ | A |
| 12V-2x6 Connectors | 1 | 0 |
| Hold-Up Time | 27.4 ms | 11.1 ms-59% |
| Zero-RPM Mode | Yes | No |
| Sleeved Cables | No | No |
| Measured Avg Efficiency | 89.23 % | 85.91 % |
| PCIe 8-pin Connectors | 8 | 2-75% |
| Measured Average Noise | 14.75 dBA | 20.2 dBA |
| Connector Count | 1x 24-pin ATX, 2x EPS 4+4, 1x PCIe 16-pin (component side), 8x PCIe 6+2-pin, 12x SATA, 6x Molex | 1x 24-pin ATX (fixed), 1x EPS 4+4 (fixed), 2x PCIe 6+2-pin, 6x SATA, 4x Molex |
| Fan Size | 135 mm | 120 mm |
| Fan Model / Bearing | 135mm double ball bearing (CF1325H12D), Axial-tech | 120mm rifle bearing (HA1225H12F-Z) |
| OEM / Platform | Seasonic | CWT |
| Japanese Capacitors | Yes | Yes |
| EPS 8-pin Connectors | 2 | 1 |
| SATA Connectors | 12 | 6 |
| Molex Connectors | 6 | 4 |
| Length | 190 mm | 140 mm |
| Colour | Black | Black |
| Fan Bearing | Ball | Rifle |
| MTBF | 120000 hours | 100000 hours-17% |
| Modularity | Fully Modular | Semi-Modular |
| Protections | OPP, OVP, UVP, SCP, OCP, OTP | OCP, OVP, SCP, OTP |
| Warranty | 10 years | 5 years-50% |
| Model | ROG Thor 1200W Platinum II | CX550M |
| Typical Price | $349.99 | $54.99 |
| Source URL | https://rog.asus.com/power-supply-units/rog-thor/rog-thor-1200p2-gaming-model/spec/ | https://www.corsair.com/us/en/p/psu/cp-9020220-na/cx-m-series-cx550m-550-watt-80-plus-bronze-semi-modular-atx-psu-cp-9020220-na |
Price comparison
| Retailer | ASUS ROG Thor 1200W Platinum II | Corsair CX550M |
|---|---|---|
| Consumercarts listing | $349.99 View on Consumercarts listing | |
| Amazon | $54.99 View on Amazon | |
| Newegg | View on Newegg |
Disclaimer: The price and specification of the given product may differ from the actual product. Please confirm on the retailer's website before buying.
Verdict
ASUS ROG Thor 1200W Platinum II
8.8 / 10 Expert Rating
A best-in-class 1200W Platinum-rated ATX unit for a workstation or multi-GPU build with serious headroom, held back only by its premium price.
Corsair CX550M
6.9 / 10 Expert Rating
A safe, unglamorous budget Bronze pick for entry-level gaming PCs that don't need Gold efficiency or full modularity.
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