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Best 1200W PSU

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While the PSU seems like a less exciting component to your PC build, it should never be overlooked due to its importance as the heart of your system. You want a reliable PSU to ensure your components smoothly operate to their maximum potential, as well as prevent any issues that could arise - especially the unpredictable ones like power surges. If you have a RTX 5090 or RTX 5080, you'll undoubtedly want to provide a trusted PSU to protect your investment.

Best Premium 1200W PSU: CORSAIR HX1200i SHIFT

If you're looking for the best of the best, the HX1200i SHIFT is the way to go. It's spec sheet is absolutely stacked: Cybenetics Platinum power efficiency, side-mounted SHIFT connectors for easy cable connections & cable management, and an integrated iCUE LINK hub for taking full advantage of iCUE LINK's cable minimization. The iCUE capability will also allow you to monitor your PSU's performance such as efficiency and power draw in real-time. The 10-year warranty will provide you with peace of mind for the entire duration of your PC build, or even two.

HXi_SHIFT_1200_BLACK_07_HERO_DC_FAN
HXi_SHIFT_1200_BLACK_05_DC_FLAT

CORSAIR HX1200i SHIFT Power Table

Rail +3.3V +5V +12V +5VSB
Max Current 25A 25A 100A 3A
Max Combined Wattage 150W 1200W 15W
1200W

CORSAIR HX1200i SHIFT Cable Configuration

Cable Type Length Total Connectors
ATX Cable (24-pin) 610mm (± 10mm) 1
EPS / ATX 12V 8-pin (4+4) 650mm (± 10mm) 2
PCIe 8-pin (6+2) 650mm (± 10mm) 2
90° 12V-2x6 to 2x 8pin (6+2) pin 650mm (± 10mm) 2
90° 12V-2x6 to 600W 12V-2x6 (12+4) pin 650mm (± 10mm) 1
SATA (4 SATA) 800mm (± 10mm) 8
PATA (4-pin) 750mm (± 10mm) 8
USB (TYPE C) To 10-1 Pin 525mm (± 25mm) 1
iCUE LINK to 90° iCUE LINK 200mm (± 25mm) 1
iCUE LINK to iCUE LINK 600mm (± 25mm) 1

Best Mid-Range 1200W PSU: CORSAIR RM1200e

If you don't need the capabilities from the HX1200i SHIFT or have a case that is more suitable for a traditional PSU connector layout, the RM1200e is the proper counterpart. You'll still have access to ATX 3.1-certification, PCIe 5.1 compliance, and a 7-year warranty. The Cybenetics Gold efficiency certification is also a great baseline for power efficiency.

RM1200e_Main_Visual
RM1200e Connections CP-9020258-NA

CORSAIR RM1200e Power Table

Rail +3.3V +5V +12V +5Vsb
Max Current 20A 20A 100A 3A
Max Combined Wattage 150W 1200W 15W
1200W

CORSAIR RM1200e Cable Configuration

Cable Type Length Total Connectors
ATX Cable (24-pin) 610mm (± 10mm) 1
EPS / ATX 12V 8-pin (4+4) 650mm (± 10mm) 2
PCIe 8-pin (6+2) Single-Connector 600mm (± 10mm) 2
PCIe 8-pin (6+2) Dual-Connector 750mm (± 10mm) 4
12VHPWR / 12V-2x6 PCIe Gen 5 650mm (± 10mm) 1
SATA (3 SATA connectors) 800mm (± 10mm) 3
SATA (4 SATA connectors) 700mm (± 10mm) 4
PATA (4-pin) 750mm (± 10mm) 4

Best 1200W PSU Accessories

If you'd like an aesthetic or functional accessory to your 1200W PSU, then we've got a few options:

  • ThermalProtect - a 12V-2x6 power cable that has built-in Over Temperature Protection (OTP) and causes the GPU to shut down when an unsafe temperature is detected - protecting your GPU from an abnormality.
  • Individually Sleeved Cables - available in Starter Kits (Type 4), or Pro Kits (Type 4, Type 5), these cables are more flexible and equipped with combs, providing an easier time with organizing your cables and making them look tidy. The HX1200i SHIFT utilizes Type 5 cables, whilst the RM1200e utilizes Type 4 cables.
  • ARGB PSU Cable Strips - ARGB light strips that simply clip onto your PSU cables.
THERMALPROTECT
Elite Individually Sleeved PSU Cables
corsair argb psu cable strips
THERMALPROTECT Elite Individually Sleeved PSU Cables corsair argb psu cable strips

Useful Tools

If you're still unsure what wattage PSU you need for your PC build, here's some useful tools to help you make the right decision:

  • PSU Calculator - Choose your GPU and CPU, answer a few quick questions, and we'll suggest the best few PSU options for your setup.
  • PC Builder - Get instant hardware recommendations, size guides and compatibility checks for your full PC build, including your Power Supply.

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