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Black rectangular ATX power supply unit with 140mm fan and fully modular cable sockets

MSI

MSI MPG A1000G 1000W 80 Plus Gold ATX power supply

SKU CH-2676-K9A8E

Full-modular ATX unit delivers 1000 W with 80 Plus Gold efficiency and a 140 mm FDB fan

  • Max wattage1000 W
  • Power efficiencyUp to 90%
  • Modular cablingFull Modular
  • Fan configuration1 × 140 mm FDB Bearing Fan
  • Power factor correctionActive
  • Main power connector20+4Pin
  • Full modular cables simplify builds with clean routing
  • 80 Plus Gold certified efficiency reaches up to 90 percent at typical load
  • 140 mm FDB fan delivers quiet cooling across 100 to 240 volt input range
  • Six protection circuits include OCP OVP OPP OTP SCP UVP
  • Ten SATA power connectors support multiple drives and peripherals

1000W ATX power supply for high-end desktop builds

The MSI MPG A1000G delivers 1000 W of continuous power through a fully modular ATX design. It targets enthusiasts assembling systems with multiple graphics cards or high-current CPUs. A 140 mm fluid-dynamic-bearing fan provides cooling while the unit operates between 47 and 63 Hz input frequency.

80 Plus Gold efficiency limits heat and waste

The supply meets 80 Plus Gold certification, reaching up to 90 percent efficiency at typical loads. Active power-factor correction shapes the input current across the 100 to 240 V range. Protection circuits cover over-current, over-voltage, over-power, over-temperature, short-circuit and under-voltage events. All electrolytic capacitors are rated at 105 degrees Celsius.

Four +12 V rails with 30 A per GPU connector

The +12 V output splits across four rails: motherboard at 25 A, CPU at 25 A and two GPU rails at 30 A each. Four PCIe 6+2 pin cables and two EPS 4+4 pin cables are included. Builders needing more than four PCIe connections or a 12VHPWR native cable should verify compatibility before purchase.

How it compares

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

Price $213.99
Pricier than about 66% of the 10,869 comparable items (median $142.99).
Max wattage 1000 W
Higher than about 70% of the 930 comparable items (median 850 W).

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Specifications

Product
Brand nameMSI
Model nameMPG A1000G
Product typeATX
Ports & slots
SATA power connectors10
Output type+5 V@20A, +3.3 V@20A, +12VMBPH@25A, +12VCPU@25A, +12VVGA1@30A, +12VVGA2@30A
Connection types1 x ATX/MB 24 Pin
2 x CPU/EPS 4+4 Pin
4 x PCI-e 6+2 Pin
8 x SATA
5 x Peripheral
Power
Max wattage1000 W
Power efficiencyUp to 90%
Modular cablingFull Modular
Power factor correctionActive
Main power connector20+4Pin
12V rails4
Efficiency certification80 PLUS GOLD Certified
Built-in protectionOCP / OVP / OPP / OTP / SCP / UVP
Supply voltage100–240 V
AC input frequency47–63 Hz
Rated input current10A @ 115 V, 5A @ 230 V
Size & build
Product dimensions3.39 in × 5.91 in × 6.3 in
Compatibility
PSU length limit160 mm
More details
Fan configuration1 × 140 mm FDB Bearing Fan

Questions about this item

Should I pick the 1000W version or a lower-wattage model for my build?

Choose 1000W if your graphics card and CPU together draw close to that limit; the four +12V rails each deliver up to 30A for high-end GPUs.

What does the 80 Plus Gold 90% efficiency figure mean once the unit is inside my PC?

At typical loads the supply converts at least 90% of wall power into usable DC, so less waste heat and lower electricity cost.

How does the ATX 24-pin and EPS 4+4-pin layout limit what motherboards I can use?

The 24-pin main connector plus two 4+4-pin CPU cables fit any standard ATX board, including dual-CPU server models.

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