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MSI MPG A1250GS PCIE5, Fully Modular Gaming 1250W Power Supply, 80+ Gold, Dual 12V-2x6 Cables, Server-Grade Capacitor, ATX 3.1 & PCIe 5.1 Ready, Low-Noise, Semi Digital, 10 Year Warranty

MSI MPG A1250GS PCIE5

Bottom line: The MSI MPG A1250GS PCIE5: 1250W output with two native 12V-2x6 connectors for high-draw GPUs; main trade-off: 1250W is overkill for mid-range builds drawing well under 800W.

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By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014. For retro PC hardware and period-correct parts, synthesises manufacturer documentation, community compatibility lists and marketplace listings rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference.

Pros & Cons

Pros

  • ✓ 1250W output with two native 12V-2x6 connectors for high-draw GPUs
  • ✓ ATX 3.1 and PCIe 5.1 ready for current-generation graphics cards
  • ✓ Fully modular cabling backed by a 10-year warranty
  • ✓ 100% server-grade 105C capacitors throughout
  • ✓ Protections: OCP, OTP, OPP, SCP, OVP, UVP, SIP and NLO

Cons

  • ✗ 1250W is overkill for mid-range builds drawing well under 800W
  • ✗ 80 Plus Gold rather than Platinum or Titanium at this wattage tier
  • ✗ Noise listed only as optimized; no dB rating stated
  • ✗ Dimensions not stated; check case clearance before buying

Manufacturer description

MSI's premium MPG series is engineered for gamers who demand strong performance and sleek design. Each product showcases cutting-edge aesthetics and vibrant colors, reflecting MPG's commitment to exceptional design. With optimized configurations, MPG creates a visually striking and powerful gaming experience that leads the trends.

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SpecPicks Verdict

SpecPicks scored MSI MPG A1250GS PCIE5 using a rating × review-volume × price-fit model applied to published specs and reviews across the power supplies & cables category. Compare with similarly-priced alternatives in the power supplies & cables category before committing. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for power supplies & cables of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Key Features

  • 80 Plus Gold certified for high efficiency
  • Optimized sound level
  • 2 x native 12V-2x6 connector
  • 100% all Server-grade 105 C capacitor
  • Industrial level protection with OCP/ OTP/ OPP/ SCP/ OVP/ UVP/ SIP/ NLO

Full Specifications

Brandmsi
Wattage1250 watts
Fan Count1
Model NameMSI MPG A1250GS PCIE 5.1 ATX 3.1
Unit Count1 Count
Form FactorATX
Model NumberMPG A1250GS PCIE5
Connector TypeATX
Cooling MethodAir
Number of Fans1
Output Wattage1250
Item Dimensions11.5 x 9.5 x 5.4 inches
Mfr Part NumberMPG A1250GS PCIE5
Number of Items1
Compatible DevicesComputer
Warranty Description10 Year Manufacturer
Maximum Input Voltage240 volts_of_alternating_current
Minimum Input Voltage100 volts_of_alternating_current
Item dimensions L x W x H11.5 x 9.5 x 5.4 inches
System Bus Connector Type24 Pin
Full listing titleMSI MPG A1250GS PCIE5, Fully Modular Gaming 1250W Power Supply, 80+ Gold, Dual 12V-2x6 Cables, Server-Grade Capacitor, ATX 3.1 & PCIe 5.1 Ready, Low-Noise, Semi Digital, 10 Year Warranty

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MSI MPG A1250GS PCIE5, Fully Modular Gaming 1250W Power Supply, 80+ Gold, Dual 12V-2x6 Cables, Server-Grade Capacitor, ATX 3.1 & PCIe 5.1 Ready, Low-Noise, Semi Digital, 10 Year Warranty is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

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MSI MPG A1250GS PCIE5, Fully Modular Gaming 1250W Power Supply, 80+ Gold, Dual 12V-2x6 Cables, Server-Grade Capacitor, ATX 3.1 & PCIe 5.1 Ready, Low-Noise, Semi Digital, 10 Year Warranty
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