Corsair
Corsair RM1000x (ATX 3.1)
1,000 W · 80 PLUS Gold · Full
8.1
$170Nov 9
Corsair HX1200i (ATX 3.1)
A 1200 W Platinum flagship-tier unit with two 12V-2x6 cables, iCUE monitoring and a 10-year warranty.
- 1,200 W
- 80 PLUS Platinum
- Full
- ATX 3.1
- ATX
PCPR score
8.3
Great
Best price we’ve seen
$280Nov 9
Checked recently. Confirm at the retailer.
R1
The short version
The HX1200i is Corsair's Platinum-class 1200 W power supply, certified to ATX 3.1 and Cybenetics Platinum. The 2025 revision includes two dual-colour 12V-2x6 cables, a 140 mm fluid dynamic bearing fan with Zero RPM mode and USB-based iCUE monitoring. It is aimed at flagship GPU builds that want headroom beyond 1000 W. Corsair's listings show several revisions, so check the SKU before buying.
Pros
- Two native 12V-2x6 cables for dual high-power GPU builds
- Platinum efficiency with Zero RPM fan mode
- iCUE monitoring over USB
- Ten-year warranty
Cons
- Expensive compared with Gold-rated 1000 W units
- Corsair's page does not state the unit length
- Older HX1200i revisions are still listed under other SKUs
Best for
- Flagship GPU builds needing more than 1000 W
- Builders who want software power monitoring
J3
Full specifications
Core
- Wattage
- 1,200 W
- Form factor
- ATX
- Efficiency
- 80 PLUS Platinum
- ATX standard
- ATX 3.1
Features
- Modularity
- Full
- Warranty
- 10 years
Connectivity
- 12V-2x6 / 16-pin
- 2
- PCIe 8-pin
- 5
- EPS 8-pin
- 2
- SATA power
- 8
- Molex
- 6
Cooling
- Fan size
- 140 mm
- Zero-RPM mode
- Yes
Physical
- Color
- Black
Compatibility notes
- Corsair's page lists no length, so measure case clearance with the maker's manual
- Cables are Type 4
- Needs a USB header for iCUE monitoring
P1
Where to buy
Official store
Seen Nov 9, 2026
$279.99
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AV1
Video reviews
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AV2
What reviewers and owners say
Tom's Hardware
PositiveTom's Hardware found excellent electrical performance, platinum efficiency, quiet operation and dual 12V-2x6 connectors, but criticized the very long 200mm chassis and high price.
Review
Read the source
Summaries are written in our words. Follow the links for each source’s own review.
R9
Common questions
Is the HX1200i ATX 3.1 certified?
Corsair's current CP-9020307-NA page states ATX 3.1 certification with PCIe 5.1 compatibility. A Corsair forum user reported an older box labelled ATX 3.0, so confirm the SKU.
How many 12V-2x6 cables are included?
The 2025 revision lists two 12V-2x6 cables, with one 12V-2x6 connector per cable.
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