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Black rectangular ATX power supply with full-mesh front and modular cable sockets

be quiet!

be quiet! Dark Power 13 750W ATX 3.0 power supply BN659

SKU CH-AYCP-67VNW

A 750W ATX 3.0 power supply with 80 PLUS Titanium efficiency up to 95.8%, PCIe 5.0 support, a Silent Wings fan, fully modular cables and switchable 12V rail modes

  • Max wattage750 W
  • Modular cablingYes
  • Fan configuration1
  • Power factor correctionActive
  • Main power connector20+4 Pin
  • 12V rails4

Model Dark Power 13

Capacity 750W

  • 80 PLUS Titanium efficiency up to 95.8% cuts power waste and heat
  • ATX 3.0 design with PCIe 5.0 support handles next-gen GPU power spikes
  • Silent Wings frameless fan and full-mesh inlet keep operation virtually inaudible
  • Overclocking switch merges four 12V rails into one massive rail for extreme loads
  • Fully modular cables with 12 SATA connectors simplify routing and improve airflow

German engineering for high-end builds

The be quiet! Dark Power 13 750W is an ATX 3.0 power supply built for systems that demand 80 PLUS Titanium efficiency and native PCIe 5.0 support. Its fully modular design and four 12V rails deliver clean power to modern graphics cards and storage arrays. The 175 mm depth fits standard ATX cases while the single fan keeps airflow focused.

Upgrade from lower efficiency or ATX 2.x units

Moving from an 80 PLUS Gold or Platinum design to this Titanium-rated model cuts waste heat and lowers standby draw below 0.1 watts. The jump is worth it when a new GPU requires the 12VHPWR connector or when overclocking demands the stability of Active Rectifier plus full bridge LLC topology. Four 6+2 pin PCIe connectors also cover current-generation cards without adapters.

Sustained load behaviour

Under continuous demand the unit maintains up to 95.8% efficiency thanks to digital control and the overclocking key that merges four 12V rails into one massive rail. Over-voltage and overload protection engage automatically while the frameless Silent Wings fan spins only as fast as thermals require. MTBF exceeds 100,000 hours at 50/60 Hz input across 100-240 V.

How it compares

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

Price $130.99
Cheaper than about 55% of the 10,869 comparable items (median $142.99).
Max wattage 750 W
Lower than about 60% of the 930 comparable items (median 850 W).

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Specifications

Product
Brand namebe quiet
Product colorBlack
Product typeATX 3.0 Compatible
Performance
Frequency50/60 Hz
Ports & slots
PCIe power connectors4 × 6+2 Pin
SATA power connectors12
12V power connector1 × 4+4 Pin ATX/EPS 12 V, 1 × 8 Pin EPS 12 V
Peripheral connector3
Power
Max wattage750 W
Modular cablingYes
Power factor correctionActive
Main power connector20+4 Pin
12V rails4
Overvoltage protectionYes
Overload protectionYes
Supply voltage100–240 V
AC input frequency50/60 Hz
Rated input current14A @ 115 V, 7A @ 230 V
+3.3V max. current22A
+5V max. current22A
+12V1 max. current25A
+12V2 max. current25A
+12V3 max. current30A
+12V4 max. current30A
-12V max. current0.5A
+5VSB max. current3A
Under voltage protectionYes
Over current protectionYes
Over power protectionYes
Size & build
Top fans size135 mm
Compatibility
PSU length limit175 mm
In the box
Fans total quantity1
Environment & compliance
Over temperature protectionYes
More details
Fan configuration1
Mean time between failures>100,000 h
Over load protectionYes
Short circuit protectionYes

Other versions of this model

4 more in the same range

Questions about this item

What case clearance does the 175 mm length require?

The power supply measures 175 mm long, so the chassis must provide at least that much depth behind the motherboard tray for a standard ATX installation.

How do I select between the four 12V rails and the single 12V rail using the overclocking key?

The overclocking key is a physical switch on the unit; move it to the desired position before powering on to choose either four independent 12V rails or one combined 12V rail.

When should I expect to replace the Silent Wings fan after 100000 hours of operation?

The fan is rated for an MTBF exceeding 100000 hours; under typical desktop use this translates to many years before a replacement would be needed.

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