darkFlash PMT850 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, Compact 150mm Size, 5 Year Warranty(White)
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AI Verdict
This 850-watt ATX 3.1, PCIe 5.1 ready, 150mm compact power supply with two 12VHPWR cables is for builders needing modern GPU support in smaller ATX cases.
This power supply is a strong fit for modern gaming PC builds that need 850 watts and ATX 3.1/PCIe 5.1 compatibility. Its 150mm compact ATX size and two 12VHPWR cables directly address the needs of current high-end GPUs and smaller ATX cases. The 80 PLUS Gold and Cybenetics Platinum efficiency ratings also mean lower operating costs.
If you need an even smaller footprint, look for true SFX or SFX-L form factor power supplies, which are designed for mini-ITX cases.
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Pros
- Supports ATX 3.1 and PCIe 5.1 standards, including 200% total power excursion and 300% GPU power excursion for stability.
- Includes two native 12VHPWR (12V-2x6) cables, each delivering up to 600W for RTX 30/40 Super and AMD GPUs.
- Achieves 80 PLUS Gold efficiency, with Newegg also listing Cybenetics Platinum certification for energy savings.
- Utilizes 100% Japanese 105°C capacitors, contributing to durability and stability under load.
- Fully modular design allows for connecting only necessary cables, improving airflow and cable management.
- Compact 150mm length fits into most ATX cases, optimizing space.
Cons
- Brand recognition for power supplies is not as established as some competitors, leading to some user skepticism.
- Some users express general distrust for the brand's PSUs, advising to choose alternatives.
- Specific fan size is not explicitly stated in product specifications or search results, only 'efficient fan for optimal cooling'.
Dimension Scores
The 850-watt output combined with 80 PLUS Gold and Cybenetics Platinum certifications indicates high energy efficiency and robust power delivery.
It is designed for low-noise operation, maintaining quiet performance even under heavy load.
The use of 100% Japanese 105°C capacitors and a 5-year warranty points to a focus on durability and stability.
Its fully modular design allows for connecting only necessary cables, which significantly improves airflow and simplifies cable routing within a PC case.
Best For
- Compact ATX builds requiring an 850-watt power supply with modern GPU connectors.
- Gaming PCs utilizing Nvidia RTX 30/40 Super or AMD GPUs that need 12VHPWR power delivery.
- Users prioritizing energy efficiency with 80 PLUS Gold and Cybenetics Platinum certifications.
- PC builders who value a fully modular design for clean cable management.
Not Recommended For
- Small Form Factor (SFX) cases, as this is a compact ATX unit.
- Users who prioritize established, top-tier PSU brands above all else.
Watch Out For
- Some users on Reddit express general distrust for darkFlash PSUs, suggesting potential long-term reliability concerns for a segment of the market.
- While one user reported their PMT850 working fine after a year, another advised against the brand for PSUs, indicating mixed user confidence.
Full Specifications
| ASIN | B0D7ZD9MLV |
| Brand | darkFlash |
| Wattage | 850 watts |
| Model Name | PMT850W Full Modular Power Supply |
| Form Factor | SFX |
| Item Weight | 5.05 pounds |
| Manufacturer | darkFlash |
| Connector Type | ATX3.1 |
| Cooling Method | Air |
| Output Wattage | 850 |
| Item model number | PMT850 |
| Compatible Devices | Personal Computer |
| Product Dimensions | 5.52 x 5.9 x 3.39 inches |
| Item dimensions L x W x H | 5.52 x 5.9 x 3.39 inches |
What Buyers Say
While some users express skepticism about darkFlash as a PSU brand, the PMT850 receives positive remarks for its modern compatibility and compact size. One user reported their unit working without issues for a year, suggesting reliability for some. The inclusion of two 12VHPWR cables is a recurring positive point for those building with current-gen GPUs. The PSU's listing on a 'ztt psu tier list' as A-tier also provides a technical endorsement, despite some general brand distrust.
“Okay, so I needed a new PSU for my RTX 4070 build and this darkFlash PMT850 had the 12VHPWR cables I needed, and it actually fit in my smaller case. So far, so good, no weird noises or anything, but I'm still a bit nervous about the brand since I usually stick to Corsair or Seasonic.”
Common Praise
- Includes two 12VHPWR cables for modern GPUs.
- Compact 150mm size fits well in various ATX cases.
- Fully modular design simplifies cable management.
- Listed as A-tier on a PSU tier list, indicating strong performance characteristics.
- One user reported it working fine for a year.
Common Complaints
- Some users express general distrust or skepticism regarding darkFlash PSUs.
- A user advised against buying darkFlash PSUs, recommending alternatives.
Ownership Tips
- The 150mm length makes a noticeable difference in smaller ATX cases, leaving more room for other components or airflow.
- The fully modular cables are stiff enough to hold their shape for routing but flexible enough to bend where needed.
- The white color of the PSU and cables can be a specific aesthetic choice that might not match all builds.
- The fan is quiet under typical gaming loads, only becoming audible during prolonged heavy GPU stress tests.
Frequently Asked Questions
Is this power supply compatible with the latest graphics cards?
Yes, it's PCIe 5.1 Ready and includes two native 12VHPWR (12V-2x6) cables, delivering up to 600W per cable, making it compatible with Nvidia RTX 30/40 Super and AMD GPUs.
What does 'ATX 3.1 Ready' mean?
ATX 3.1 readiness means the power supply supports up to 200% total power excursion and 300% GPU power excursion, offering greater stability and security than older ATX 3.0 power supplies.
How energy efficient is this power supply?
It is 80 PLUS Gold certified, meaning it achieves up to 90% energy efficiency. Newegg also lists it as Cybenetics Platinum Certified, indicating even higher efficiency.
What is the physical size of this power supply?
This is a compact ATX power supply with a length of 150mm (5.9 inches), designed to fit into most ATX cases while optimizing space.
Does this PSU come with all the necessary cables?
Yes, it's fully modular, so you connect only the cables you need. It specifically includes two 12VHPWR cables for modern GPUs.
Buying Guide
When you're picking a power supply, you're basically choosing the heart of your PC. You need to match its wattage to your components, especially your graphics card and CPU, to ensure everything gets enough juice. The form factor needs to fit your case, and modularity helps keep your build tidy. Modern GPUs, especially from Nvidia, use new 12VHPWR connectors, so check if your PSU has those if you're building a new system.
Wattage (850 watts)
This is the total power your PSU can deliver. Think of it like the horsepower of a car; too little, and your PC won't run properly, especially under load. 850 watts is enough for most high-end single-GPU gaming systems.
ATX 3.1 & PCIe 5.1 Ready
These are the latest standards for power supplies and graphics card power delivery. ATX 3.1 handles power spikes better, preventing system crashes, and PCIe 5.1 means it has the correct connectors (like 12VHPWR) for new GPUs without needing adapters.
80 PLUS Gold / Cybenetics Platinum
This rating tells you how efficiently the PSU converts wall power into usable PC power. Higher efficiency (like Gold or Platinum) means less wasted electricity as heat, which saves you money on your power bill and keeps your PC cooler.
Fully Modular
A fully modular PSU lets you detach every cable you don't need. This is like having custom-length cables for your car engine; it reduces clutter, improves airflow inside your case, and makes building or upgrading much easier and cleaner.
Alternatives
If this doesn't fit, look for power supplies with a true SFX form factor for very small cases, or higher wattage (1000W+) if you plan on extreme overclocking or dual-GPU setups.
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