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ASUS ROG Strix 850W Gold ATX3.0 vs Fractal Design Ion SFX 650W Gold: Comparison
ASUS ROG Strix 850W Gold ATX3.0 and Fractal Design Ion SFX 650W Gold separate most on pcie 8-pin connectors: ASUS ROG Strix 850W Gold ATX3.0 at 3, Fractal Design Ion SFX 650W Gold at 2, 33% in favour of ASUS ROG Strix 850W Gold ATX3.0. Wattage splits them by another 24%, again favouring ASUS ROG Strix 850W Gold ATX3.0. They match on 5 other specifications, including 80 plus rating, cybenetics efficiency and sleeved cables. On price, Fractal Design Ion SFX 650W Gold sits at $119.99 against $169.99 for ASUS ROG Strix 850W Gold ATX3.0.
Specs
| Specification |  |  |
|---|---|---|
| Brand | ASUS | Fractal Design |
| Wattage | 850 W | 650 W-24% |
| 80 PLUS Rating | Gold | Gold |
| ATX Standard | ATX 3.0 | ATX 2.x |
| Form Factor | ATX | SFX |
| Single +12V Rail | Yes | true |
| Cybenetics Efficiency | Gold | Gold |
| Cybenetics Noise | A++ | A- |
| 12V-2x6 Connectors | 1 | 0 |
| Hold-Up Time | 24.3 ms | 17-30% |
| Zero-RPM Mode | Yes | false |
| Sleeved Cables | No | No |
| PCIe 8-pin Connectors | 3 | 2-33% |
| Connector Count | 1x 24-pin ATX, 2x EPS 4+4, 1x PCIe 16-pin, 3x PCIe 6+2-pin, 5x SATA, 4x Molex | 1x 24-pin ATX, 1x EPS 4+4, 2x PCIe 6+2-pin, 4x SATA, 2x Molex |
| Fan Size | 135 mm | 92 |
| Fan Model / Bearing | 135mm double ball bearing (CF1325H12D), Axial-tech | 92mm FDB |
| OEM / Platform | CWT | Sirfa |
| Cable Lengths | ATX 600mm, EPS 650mm, 16-pin 600mm, PCIe 600-610mm, SATA 400+120+120mm, Molex 400+150+150+150mm | 24-pin 350mm, EPS 350mm, PCIe 450mm, SATA 500mm |
| Length | 180 mm | 125 |
| Colour | Black | Black |
| MTBF | 120000 hours | 100000-17% |
| Modularity | Fully Modular | Fully Modular |
| Protections | OPP, OVP, UVP, SCP, OCP, OTP | OCP, OVP, OPP, SCP, OTP |
| Warranty | 10 years | 5-50% |
| Model | ROG Strix 850W Gold ATX3.0 | Ion SFX 650W Gold |
| Typical Price | $169.99 | $119.99 |
Price comparison
| Retailer | ASUS ROG Strix 850W Gold ATX3.0 | Fractal Design Ion SFX 650W Gold |
|---|---|---|
| Consumercarts listing | $169.99 View on Consumercarts listing | $119.99 View on Consumercarts listing |
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 Strix 850W Gold ATX3.0
8.3 / 10 Expert Rating
A solid 850W Gold-rated ATX unit for a popular RTX 4070 Ti / RTX 5070-class gaming build, held back only by the usual mid-tier compromises on cabling and OEM sourcing.
Fractal Design Ion SFX 650W Gold
8.2 / 10 Expert Rating
The Ion SFX line is Fractal's answer to mini-ITX builders, and the 650W Gold unit is enough for a mid-range GPU in a Fractal Terra or similarly compact case without stepping up to SFX-L.
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