Consumercarts
Corsair HX1200i Fully Modular Platinum ATX 1200W Power Supply
Corsair

Corsair HX1200i

Power SuppliesView on corsair.com
Wattage:
1200 W
80 PLUS Rating:
Platinum
Modularity:
Fully Modular
ATX Standard:
ATX 3.1

Consumercarts is reader-supported. Learn more

Disclaimer: The price and specification of the given product may differ from the actual product. Please confirm on the retailer's website before buying.

Manufacturer: Corsair Last updated: 2026-09-15

Where to buy

Corsair HX1200i (1200W/80+ Platinum/Fully Modular/ATX 3.1/High-End Multi-GPU Tier) Review

Looking for a 1200W 80 PLUS Platinum PSU with native 12V-2x6 for a flagship GPU plus a power-hungry CPU, the Corsair HX1200i is Corsair's ATX 3.1 high-wattage digital option.

We'd point serious RTX 4090/5090 builders here if they want Platinum efficiency and digital monitoring rather than stepping up to the Titanium AX1600i. It's a 200mm unit, so double-check clearance in smaller cases.

Headroom for Flagship GPUs

1200W with a single native 12V-2x6 connector covers a 4090/5090-class GPU alongside a high-core-count CPU with room to spare, and Zero-RPM keeps the 140mm fan off under typical desktop loads.

Specifications

Identity

BrandCorsair
Model NumberHX1200i

Output and rails

+12V Rail Amperage100 A

Standards and compliance

PCIe CEM StandardPCIe 5.1
Hold-Up Time21.8 ms

Efficiency and noise

Measured Avg Efficiency89.65 %
Measured Average Noise18.31 dBA

Connector inventory

EPS 8-pin Connectors2
SATA Connectors8
Molex Connectors8

Form factor and fit

Length200 mm
ColourBlack

Cooling

Fan BearingFluid Dynamic

Build quality

MTBF100000 hours

Cables

ModularityFully Modular

Monitoring, protection and price

Digital MonitoringYes
Price354.99 USD
Warranty10 years
Wattage1200 W
80 PLUS RatingPlatinum
ATX StandardATX 3.1
Form FactorATX
Cybenetics EfficiencyPlatinum
Cybenetics NoiseA+
12V-2x6 Connectors1
Zero-RPM ModeYes
PCIe 8-pin Connectors4
Connector Count1x 24-pin ATX, 2x EPS 4+4, 1x 12V-2x6, 4x PCIe 6+2-pin, 8x SATA, 8x Molex
Fan Size140 mm
Fan Model / Bearing140mm NR140P, fluid dynamic bearing
OEM / PlatformCWT
Japanese CapacitorsYes
Source URLhttps://www.corsair.com/us/en/p/psu/cp-9020281-na/hx1200i-fully-modular-ultra-low-noise-platinum-atx-1200-watt-pc-power-supply-cp-9020281-na

Expert Review

Reviewed by Burooj Alam. Rated by us, not by users.

Best for

  • RTX 4090/5090 builds with power-hungry CPUs
  • Buyers wanting Platinum efficiency with digital monitoring
  • Multi-drive workstations needing 8+ SATA

Not for

  • Compact cases with limited PSU clearance (200mm)
  • Mainstream single-GPU builds
  • Buyers on a budget

FAQs

What are the key specifications of the Corsair HX1200i (1200W/80+ Platinum/Fully Modular/ATX 3.1/High-End Multi-GPU Tier)?

The Corsair HX1200i (1200W/80+ Platinum/Fully Modular/ATX 3.1/High-End Multi-GPU Tier) is a power supply from Corsair. Key specs: Wattage 1200, 80 PLUS Rating Platinum, Modularity Fully Modular, ATX Standard ATX 3.1, 12V-2x6 Connectors 1.

Will the Corsair HX1200i (1200W/80+ Platinum/Fully Modular/ATX 3.1/High-End Multi-GPU Tier) work with my current setup?

The Corsair HX1200i (1200W/80+ Platinum/Fully Modular/ATX 3.1/High-End Multi-GPU Tier) lists Wattage is 1200. Check that against the hardware you already own before buying, since this is the field that most often decides whether a part fits.

Who is the Corsair HX1200i (1200W/80+ Platinum/Fully Modular/ATX 3.1/High-End Multi-GPU Tier) best suited to?

It suits rtx 4090/5090 builds with power-hungry cpus, buyers wanting platinum efficiency with digital monitoring, multi-drive workstations needing 8+ sata.

What are the drawbacks of the Corsair HX1200i (1200W/80+ Platinum/Fully Modular/ATX 3.1/High-End Multi-GPU Tier)?

It is a poor fit for compact cases with limited psu clearance (200mm), mainstream single-gpu builds, buyers on a budget.

Compare and read more