Skip to main content
darkFlash PMT Fully Modular Power Supply ATX 3.1& PCIe 5.1 Ready, 2 x 12VHPWR Cable Included, 100% Japanese 105°C Capacitors, 80 Plus Gold Gaming PSU (80+ Gold (ATX 3.1) WT, 850 Watts)
darkFlash

darkFlash PMT Fully Modular Power Supply ATX 3.1& PCIe 5.1 Ready

Bottom line: The darkFlash PMT Fully Modular Power Supply ATX 3.1& PCIe 5.1 Ready ($89.99 on Amazon as of 2026-10-06): ATX 3.1/PCIe 5.1 rated for 200% total and 300% GPU power excursion; main trade-off: 850W ceiling is tight for an RTX 4090-class GPU plus high-core-count CPU.

$89.99

As an Amazon Associate, SpecPicks earns from qualifying purchases. Full disclosure →

Buy on Amazon — $89.99 Compare to similar power supplies

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

Mike Perry — Hardware researcher since 2014, focused on GPU performance across gaming, rendering, and local-LLM inference. Synthesises community benchmarks, manufacturer specs, and public forum data into actionable buying guides.

*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.

Pros & Cons

Pros

  • ✓ ATX 3.1/PCIe 5.1 rated for 200% total and 300% GPU power excursion
  • ✓ Two native 12V-2x6 (12VHPWR) cables included, 600W per connector
  • ✓ All-Japanese 105C capacitors rated for sustained high-load operation
  • ✓ 80 PLUS Gold, up to 90% efficiency at 850W
  • ✓ Fully modular cables - run only what your build needs

Cons

  • ✗ 850W ceiling is tight for an RTX 4090-class GPU plus high-core-count CPU
  • ✗ darkFlash has less PSU track record than Seasonic or Corsair
  • ✗ No stated warranty length - check the listing before buying
  • ✗ Feature list cites RTX 30/40 Super compatibility, not newer 50-series by name

Related Products

Other products in this category you may like:

SpecPicks Verdict

SpecPicks scored darkFlash PMT Fully Modular Power Supply ATX 3.1& PCIe 5.1 Ready using a rating × review-volume × price-fit model applied to published specs and reviews across the power supplies category. darkFlash's power supplies lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. 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 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

  • [ATX 3.1 & PCIe 5.1 Compatibility] The gaming power supply supports up to 200% total power excursion and 300% GPU power excursion, offering greater stability and security than ATX 3.0 power supplies.
  • [80 PLUS Gold Efficiency] The 850-watt PC power supply enjoys up to 90% energy efficiency, reducing power waste and lowering electricity bills while ensuring stable system performance.
  • [105°C-Rated JP Capacitors] Utilizes high-quality all-Japanese capacitors for exceptional durability and stability, ensuring reliability under high load conditions.
  • [Native 12VHPWR Cable] The 12V-2x6 connector delivers up to 600W of power to PCIe 5.1 graphics cards. With a DC-DC structure, Full Bridge LLC resonance assistance, and 12V synchronous rectification. it ensures a stable and safe output, making it compatible with Nvidia RTX 30/40 Super and AMD GPUs.
  • [Fully Modular Design] The fully modular cable design allows you to connect only the cables you need, simplifying cable management and improving airflow within the case for better cooling.

Full Specifications

BranddarkFlash
Wattage850 watts
Model NamePMT850(Internal Part Number: UPT850)
Unit Count1 Count
Form FactorSFX
Model NumberPMT850
CompatibilityPC
Connector TypeATX3.1
Cooling MethodAir
Output Wattage850
Item Dimensions5.52 x 5.9 x 3.39 inches
Mfr Part NumberPMT850
Compatible DevicesPersonal Computer
Power Supply DesignFull Modular
Warranty Description5-Years
Maximum Input Voltage120 volts_of_alternating_current
Minimum Input Voltage100 volts
Item dimensions L x W x H5.52 x 5.9 x 3.39 inches
System Bus Connector Type24 Pin
Connector Type Used on CableATX3.1
Full listing titledarkFlash PMT Fully Modular Power Supply ATX 3.1& PCIe 5.1 Ready, 2 x 12VHPWR Cable Included, 100% Japanese 105°C Capacitors, 80 Plus Gold Gaming PSU (80+ Gold (ATX 3.1) WT, 850 Watts)

Ready to buy?

darkFlash PMT Fully Modular Power Supply ATX 3.1& PCIe 5.1 Ready, 2 x 12VHPWR Cable Included, 100% Japanese 105°C Capacitors, 80 Plus Gold Gaming PSU (80+ Gold (ATX 3.1) WT, 850 Watts) 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.

Buy on Amazon — $89.99

*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.

Related Power Supplies

Keep exploring SpecPicks

Other buying guides

Browse the catalog

Editorial

More guides & deep dives from the SpecPicks archive

Browse all articles & guides →

More reviews from the SpecPicks archive

Browse all reviews →

Earliest SpecPicks reviews

Browse full archive →
darkFlash PMT Fully Modular Power Supply ATX 3.1& PCIe 5.1 Ready, 2 x 12VHPWR Cable Included, 100% Japanese 105°C Capacitors, 80 Plus Gold Gaming PSU (80+ Gold (ATX 3.1) WT, 850 Watts)
$89.99
View on Amazon →