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Corsair AX1200i full modular ATX power supply with 140mm fan

Corsair

Corsair CP-9020008-NA AX1200i 1200 W power supply

SKU CH-CBAK-GVF80 MPN CP-9020008-NA

Digital 1200 W ATX power supply with 80 PLUS Platinum efficiency, full modular cables, 140 mm fan and Corsair Link monitoring

  • Max wattage1200 W
  • Power efficiencyUp to 92%
  • Modular cablingFull Modular
  • Fan configuration1 × 140 mm Dual Ball Bearing Fan
  • Power factor correctionActive
  • Main power connector24Pin

Model ATX 80+ Platinum (1200W)

  • 80 PLUS Platinum efficiency saves energy with up to 92% conversion
  • Full modular cabling keeps builds tidy using only the 16 SATA and 8 PCIe connectors needed
  • Digital DSP control delivers tight voltage regulation across the single 12 V rail
  • 140 mm dual ball-bearing fan runs quietly while cooling the 1200 W unit
  • Corsair Link USB monitoring gives real-time power and fan-speed data from the PSU

Digital control and monitoring

The Corsair AX1200i is a 1200 W fully modular ATX power supply that uses a DSP for real-time voltage regulation and Corsair Link software monitoring. It is built for high-end multi-GPU systems that need precise, software-controlled power delivery.

Platinum efficiency and voltage limits

The unit meets 80 PLUS PLATINUM certification with up to 92% efficiency across the 100–240 V input range. The single +12 V rail design and digital regulation keep output within tight tolerances defined by the ATX12V v2.31 and EPS 2.92 standards.

Full modular cabling and USB link

All cables detach so only required leads are installed, reducing clutter in cases that accept a 200 mm deep unit. The USB connection to a motherboard header enables Corsair Link monitoring; forgetting this cable or the software install is the most common reason telemetry appears missing.

How it compares

Measured against everything we stock in ATX Desktop Power Supplies, at today’s prices. Recalculated every night.

Price $327.99
Pricier than about 80% of the 10,869 comparable items (median $142.99).
Max wattage 1200 W
Higher than about 90% of the 930 comparable items (median 850 W).

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Specifications

Product
Brand nameCORSAIR
Product lineAXi series
Model nameAX1200i
Product typeDigital ATX12 V v2.31 and EPS 2.92
Graphics
SLI supportReady
CrossFire supportReady
Ports & slots
PCIe power connectors8 × 6+2-Pin
SATA power connectors16
Output type+3.3 V@30A, +5 V@30A
Connection types1 x ATX Connector
2 x EPS Connector
8 x PCI-E Connector
12 × 4-Pin Peripheral
16 x SATA
2 x Floppy
Power
Max wattage1200 W
Power efficiencyUp to 92%
Modular cablingFull Modular
Power factor correctionActive
Main power connector24Pin
12V railsSingle
Efficiency certification80 PLUS PLATINUM Certified
Overvoltage protectionYes
Supply voltage100–240 V
AC input frequency50/60 Hz
Rated input current15A
Size & build
Product dimensions3.39 in × 5.91 in × 7.87 in
Product weight8.8 lb (3.99 kg)
Shipping weight4.85 kg
Package size394 × 226 × 152 mm
Compatibility
Haswell compatibilityYes
PSU length limit200 mm
Environment & compliance
Regulatory approvalscTUVus, CE, CB, FCC Class B, TUV, CCC, C-tick
More details
Fan configuration1 × 140 mm Dual Ball Bearing Fan
Mean time between failures100,000 h

Other versions of this model

1 more in the same range

Questions about this item

Which capacity in the AXi series should I pick for a multi-GPU build?

The AX1200i delivers 1200 W from a single +12 V rail and includes eight 6+2-pin PCIe connectors, so it can feed several high-end graphics cards without needing a second unit.

What does the 92 % efficiency figure mean once the unit is installed?

At typical loads the PSU converts at least 92 % of AC input into DC output, so less energy becomes heat and the 140 mm fan can run more quietly.

What digital interface does the AX1200i use and what does it control?

A USB link to the motherboard header lets Corsair Link software monitor voltages, fan speed and power draw in real time and adjust the fan profile.

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