be quiet! Pure Power 13 M 850W Power Supply, 80 Plus® Gold Certification, ATX 3.1 PSU, Support for PCIe 5.1 GPUs, semi-Passive…
be quiet!
Best for
Best ATX 3.1 / 12VHPWR semi-passive
Amazon rating
Amazon aggregate, one input among many in the Verdict Score
Based on 1 trusted source
Current price
$124.90
Updated May 18, 2026 · 1 min read
Sources behind this verdict
10 reviewers weighted by source trust
The consensus
What reviewers found
Synthesized across the trust-weighted source mix below.
Across the reviewers we read, the be quiet! Pure Power 13 M 850W is the standout pick for builders who prioritize acoustics. hwbusters.com (high-trust) summarizes the unit as 'dead silent,' the result of a semi-passive 120mm fan design that keeps the fan off entirely at low to moderate loads.
What reviewers liked
- hwbusters.com (high tier) explicitly calls the acoustic profile 'dead silent' thanks to semi-passive fan design
- ATX 3.1 / PCIe 5.1 ready with single-rail design suited to overclocked GPUs
- Specialist-community consensus on r/buildapcsales rates it A-tier with HEC OEM platform and Japanese capacitors
- 10-year warranty and strong Amazon verified-purchase rating (4.8 across 513 reviews)
Where it falls short
- Thinner mainstream expert review coverage than the Corsair RMx line, with high-trust analysis concentrated at hwbusters.com
- r/bequietofficial owners report fan-bearing scratching on older be quiet! products after multi-year use, a long-term-durability flag
- Single-rail design is a stylistic choice some builders dislike for safety-margin reasons
- No Platinum-tier variant in this specific SKU for users who want maximum efficiency
Across the reviewers we read, the be quiet! Pure Power 13 M 850W is the standout pick for builders who prioritize acoustics. hwbusters.com (high-trust) summarizes the unit as 'dead silent,' the result of a semi-passive 120mm fan design that keeps the fan off entirely at low to moderate loads. The manufacturer's claimed 94.4% peak efficiency aligns with the 80 Plus Gold rating, and a related r/bequietofficial thread points out that be quiet's own 230V testing places the Pure Power 13 M ahead of the older Straight Power 12, which was marketed as Platinum.
Specialist-community sentiment on r/buildapcsales is notably positive: commenters highlight the 10-year warranty, HEC-manufactured platform, 105°C Teapo Japanese capacitors, and clean soldering, with one r/bapcsalescanada thread calling the noise profile 'especially noteworthy' for an A-tier unit. The buildapc community treats it as appropriate for sustained heavy loads, including long Blender render sessions, though some owners on r/bequietofficial mention fan-bearing scratch issues developing after several years on older be quiet! products.
Mainstream-tier expert coverage outside hwbusters.com is thinner than for the Corsair RMx line, which holds the score back slightly. But for buyers who specifically want ATX 3.1 with a near-silent fan profile, the trust-weighted consensus points here.
- 80 PLUS GOLD CERTIFIED Pure Power 13 M 850W is certified 80 PLUS Gold with an outstanding efficiency rating of up to 94.4%. The most compelling benefit: lower power consumption, consequently lower costs, and above all a cooler as well as quieter operation. Pure Power 13 M 850W is always the correct choice for quiet systems and gaming PCs!
- FUTURE-PROOF YOUR SYSTEM Pure Power 13 M 850W is an ATX 3.1 PSU and comes with both native integration of the 12V-2x6 connector for next-generation PCIe 5.1 graphics cards, and 4 PCIe 6+2-pin connectors for support of current-gen GPUs. This makes the PSU extremely versatile and the perfect choice for powerful systems of today and the ones to come
- THE NEW STANDARD OF POWER Pure Power 13 M offers 850W of continuous power with one massive 12V rail. Even if the graphics card demands excessive power for a short time: Pure Power 13 M 850W handles power excursions up to double its rated power with ease. This ensures reliable operation with the next generation of processors and graphics cards.
- SEMI-PASSIVE ZERO-RPM COOLING While under low load, the fan turns off completely until its services are needed again for more demanding operations. This feature, combined with the reliable be quiet! fan and its airflow-optimized fan blades, make Pure Power 13 M 850W exceptionally silent in all load scenarios
- HIGH-CLASS TECHNOLOGIES With its LLC topology Pure Power 13 M 850W provides best-in-class voltage regulation and efficiency. That makes it perfect for building very quiet systems or upgrading gaming and media creation PCs
- MODULAR CABLES Thanks to their modularity, all unnecessary cables in the system are left out. Pure Power 13 M 850W simplifies cable management and routing for a tidy-looking system. A smoother airflow results from the uncluttered layout of the system, which means lower noise and temperatures inside the case.
Having excellent noise profile (from its semi-passive construction) while being A tier is what makes this PSU especially noteworthy. 750W/1000W ...
Like the fan in my Power Supply now, one front and back Fan started scratching on low RPM after some years and so did one of my Dark Rock Pro 3 ...
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“Be Quiet! Pure Power 13M (ATX 3.1) – The Future” · Ready PSU You ...
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