The Corsair HX1200i is a high-performance ATX v3.1 and PCIe 5.1 compatible power supply, destined for high-end systems equipped with power hungry components. Read the full review to learn more about it!
The Corsair HX1200i ATX v3.1 is (or will be) included in my best ATX v3.x & PCIe 5.x PSU picks article.
I want to start with this first. From now on, I won’t often do Corsair reviews since I don’t communicate with Corsair’s PR team.
The Corsair HXi line has three members, with 1500W, 1200W, and 1000W max power. In today’s review, I will evaluate the middle member, which is strong enough to power a high-end system equipped with an NVIDIA RTX 5090 and an AMD 9950X3D processor.
| Corsair HX1500i | $400 |
| Corsair HX1200i | $320 |
| Corsair HX1000i | $260 |
At $320, the HX1200i is far from affordable, so I expect a lot from it to justify the hefty price. According to Corsair, this unit is 50 series ready, meaning that it supports NVIDIA’s newest GPUs, including the super-expensive RTX 5090. The unit is Cybenetics Platinum certified in efficiency and has a Cybenetics-A noise rating, meaning it operates silently despite its high capacity. High max power and silent operation typically don’t go along unless the platform is highly efficient and has a large enough PCB to accommodate large heatsinks. A carefully tuned fan speed profile is also required. Lastly, I have to mention that Channel Well Technology manufactures this unit under the strict supervision of Corsair’s engineering team.
Look at our best ATX v3.1 PSU guide before buying your next PSU.
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- Manufacturer (OEM): CWT
- Max Power: 1200W
- Cybenetics Efficiency: [115V] Cybenetics Platinum (89.650%), [230V] Cybenetics Platinum (91.473%)
- Noise: Cybenetics A+ (15-20 dB[A])
- Compliance: ATX v3.1, EPS 2.92
- Operating Temperature (Continuous Full Load): 0 – 50 °C
- Alternative Low Power Mode support: Yes
- Power 12V combined: 1200W
- Number of 12V rails: 1
- Power 5V + 3.3v: 150W
- Power 5VSB: 15W
- Cooling: 140mm Fluid Dynamic Bearing Fan (NR140HP)
- Semi-Passive Operation: ✓ (Selectable)
- Modular Design: Yes (Fully)
- High Power Connectors: 2x EPS (2x cables), 5x PCIe 6+2 pin (5x cables), 1x PCIe 12+2 pin (600W)
- Peripheral Connectors: 8x SATA (2x cables), 6x 4-pin Molex (2x cables)
- ATX Cable Length: 610mm
- EPS Cable Length: 650mm
- 12+2 pin PCIe Cable Length: 650mm
- 6+2 pin PCIe Cable Length: 650mm
- Distance between SATA/4-pin Molex: 110/100mm
- In-cable capacitors: No
- Dimensions (W x H x D): 150 mm x 85 mm x 200mm
- Weight: 2.44 kg (5.38 lb)
- Warranty: 10 years
- MSRP (excluding VAT): $320
Power Specifications
| Rail | 3.3V | 5V | 12V | 5VSB | -12V | |
| Max. Power | Amps | 25 | 25 | 100 | 3 | 0.3 |
| Watts | 150 | 1200 | 15 | 3.6 | ||
| Total Max. Power (W) | 1200 | |||||
Hi, thanks for your high quality reviews and your hard work! Just bought an Astral RTX 5090 OC and want to pair it with a high quality PSU. Had in the past mostly high quality ATX 2.0 Seasonic like the TX-1000, do you recommend the newer ones due to be released – like the TX-1300, or you have different recommendations for a silent, reliable PSU that can handle the GPU load?
The Seasonic TX line is very good, although expensive. If you can afford it, go for it.
Thank you very much for all the reviews, analyses and hard work.
I am in the market for a high-end PSU, and ended up eyeing this Corsair HX1200i (or HX1500i) and the cooler master X silent max 1300. Which one would you consider the most reliable?
Reliability also has to do with luck and the mains grid quality, since all PSUs you mention have high build quality and good parts. I would probably go for the HX1500i, because the CM unit is super expensive.
Thank you!