HX1200i
The Corsair HX1200i is a 1200W ATX power supply rated 80+ Platinum, fully modular, with a 12V-2x6 connector for a modern graphics card. Independent lab testing puts it at A+ for noise, averaging 18.3 dB(A) across the load range, meaning very quiet under load. It is out of stock at the retailers we track right now, but the specs below still apply whenever it returns.
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 1200W unit delivers 1200W. This scores how well built and how liveable the HX1200i 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 HX1200i itself by Cybenetics, an independent test lab.
- Average efficiency
- 89.7%Averaged across the full load range
- Average noise
- 18.3 dB(A)Cybenetics grade A+, averaged across the load range
- Zero-RPM mode
- YesThe fan stops entirely at low load
- Fan bearing
- Fluid dynamicWhat 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+ Platinum 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
- 1200 W
- Efficiency
- 80+ Platinum
- ATX 12V standard
- ATX 3.1
- MSRP
- $319.99
Connectors
- Motherboard
- 24-pin
- CPU (EPS)
- 2 (4+4)
- PCIe
- 4 (6+2)
- 12V-2x6 / 12VHPWR
- 12+4
- SATA
- 8
- Molex (4-pin)
- 8
Physical
- Form factor
- ATX
- Depth
- 200 mm
- Fan size
- 140 mm
- Modularity
- Fully modular
- Cable colour
- black
- Colour
- black
- RGB
- No
Platform
- Built by
- Channel Well Technology
- Topology
- Full-Bridge & LLC
- Minor-rail regulation
- DC-DC
- Secondary rectification
- Synchronous Rectification
Electrical & Warranty
- Input voltage
- 100-240 V
- Input frequency
- 47-63 Hz
- Warranty
- 10 years
- Part number
- CP-9020281-NA
Compare the HX1200i 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 HX1200i
Every in-stock retailer offer we track, cheapest first.
Currently out of stock
The HX1200i isn’t in stock at the retailers we track right now. Prices refresh daily, so check back, or compare other in-stock units.
Browse in-stock power suppliesWhat the HX1200i can power
Compare all GPUs →The graphics cards this 1200W unit meets the system requirement for, ranked fastest first at 4K, 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 4K. 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 |
|---|---|---|---|
| GeForce RTX 5090 Nvidia | 575 W | 1000 W | +200 W |
| GeForce RTX 4090 Nvidia | 450 W | 850 W | +350 W |
| GeForce RTX 5080 Nvidia | 360 W | 850 W | +350 W |
| GeForce RTX 4080 Super Nvidia | 320 W | 750 W | +450 W |
| Radeon RX 7900 XTX AMD | 355 W | 800 W | +400 W |
| GeForce RTX 5070 Ti Nvidia | 300 W | 750 W | +450 W |
| Radeon RX 9070 XT AMD | 304 W | 750 W | +450 W |
| GeForce RTX 4080 Nvidia | 320 W | 750 W | +450 W |
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