Unboxing the Platinum-rated be quiet! STRAIGHT POWER 12 with 1000W Capacity: Featuring ATX 3.0 and 12VHPWR

Be quiet! Introduces its STRAIGHT POWER 12 1000W power supply, tailored to the latest Intel ATX12V 3.0 specification. It effortlessly delivers up to 600W on its 12VHPWR rail and boasts an 80 Plus Platinum efficiency badge. With six distinct safety features and a generous ten-year factory warranty, gamers can now opt for one of the most dependable and silent ATX 3.0 power sources in the market.

Details of the be quiet! STRAIGHT POWER 12 1000W PSU:

  • Standard: ATX 3.0
  • AC Input: 100-240Vac
  • DC Outputs: +3.3V, +5V, +12V, -12V, +5VSB
  • Measurements: 160x 150 x 86 mm
  • Cooling: Features the be quiet! Silent Wings 135mm fan
  • Efficiency Badge: 80 Plus Platinum
  • Cabling: Fully modular
  • Warranty Duration: A decade
  • Safety Protocols: OTP, OCP, OPP, SCP, OVP, UVP, and SIP
  • Connector Assortment: 24-pin motherboard, dual 8-pin CPU, a 12+4 pin 12VHPWR, four 6+2 pin PCIe, eight SATA, and two peripheral connectors.

Be quiet! STRAIGHT POWER 12 1000W Power Supply Unpacking

The STRAIGHT POWER 12 lineup is the newest power supply series from be quiet! Adhering to the Intel ATX 3.0 standards, it offers various capacities, ranging from 750W to 1500W. The series proudly holds an 80 Plus Platinum efficiency rating, boasting a peak efficiency of up to 93.9%. Additionally, these power supplies come with a solid ten-year post-purchase warranty.

The one who opened the box this time is quiet! 
Product features on the back of the box.
Module wires, power supply body, AC wires, screws, disposable cable ties.

The dimensions of the STRAIGHT POWER 12 1000W are 160 x 150 x 86 mm. With a length of 16 cm, it fits easily into most standard mid-tower cases. However, for more compact cases, you might need to tweak the front hard drive bay’s position to create additional room for concealing the power supply cables.

Inside, the STRAIGHT POWER 12 1000W boasts a full-bridge LLC resonant design with a +12V single output. It incorporates 105°C top-grade Japanese capacitors, ensuring longevity and consistent power delivery. Moreover, the power supply is cooled by Be Quiet!’s Silent Wings 135mm fan, which, when combined with a funnel-shaped air intake, allows for better airflow. This design not only enhances the cooling efficiency but also extends the lifespan of the unit.

The length of the power supply is 16 cm.
Equipped with a 135 mm be quiet! Silent Wings fan inside.
There is a large area of ​​heat dissipation mesh on the rear.
Fan running noise up to 28.9 dB(A) at 100% load.

The STRAIGHT POWER 12 1000W has been awarded the 80 Plus Platinum certification, achieving a conversion efficiency of 91.8% at 230V under full load. However, when referencing the 80 Plus database, only the STRAIGHT POWER 12 series is listed. For reference, the efficiency report for the 1500W variant from the same series is available to users.

80 Plus Test Report.

The fully modular cabling system allows users to customize the required cables based on their specific needs. Each connector slot is clearly labeled with a specific code. For those unfamiliar with the setup, it’s advisable to consult the manual before starting the installation.

Full module power supply slot.
Detailed diagram of module cables.

The STRAIGHT POWER 12 1000W cables are all encased in braided sleeves. Although these wires have a thicker diameter than standard black flat cables, be quiet! has designed them to be supple and easily bendable.

The power supply comes with a set of ATX 20/24-Pin connectors for the motherboard. Additionally, there are two 8-pin CPU connectors, catering to high-end motherboards that require dual 8-pin power. One of these CPU connectors is a single 8-pin, while the other is split into 4+4 Pins.

A 24-Pin cable for the mainboard of the braided outer layer, with a length of 600mm.
Two CPU 8-pin power supply wires with a length of 700mm.

The power supply cable for PCIe devices is designed with two V-shaped wires, each housing two PCIe 6+2 Pin connectors, making a total of four connectors. The total length of this cable is 600 mm.

Two 600 mm long PCIe 6+2 Pin cables, with a total of four PCIe 6+2 Pin connectors.

Apart from adhering to the recent Intel ATX 3.0 standard, the STRAIGHT POWER 12 1000W also comes with an integrated 12+4 Pin 12VHPWR cable. This single line can deliver up to 600W, ensuring a consistent power source for certain NVIDIA RTX 40/30 series GPUs.

12VHPWR power supply upper limit is 600 W, wire length is 600 mm.
12+4 Pin display.

For powering auxiliary devices, two distinct cable types are provided. One type features two cables, each with four SATA connectors that have 180° flat terminals. The second type combines both SATA and the larger 4-pin connectors, with each cable having two of each kind.

Two 4x SATA cables, the cable length is 500+150+150+150mm.
2x SATA and 2x PATA (large 4-Pin), the cable length is 500+150+150+150mm.

The power supply testing was conducted on a platform equipped with an AMD Ryzen 9 7900 and ASRock B650E Taichi. With AMD’s Precision Boost Overdrive set to Auto, the NVIDIA GeForce RTX 4080 Founders Edition graphics card was tested. OCCT AVX and AIDA64 FPU + FurMark were the software used for dual stress tests, while HWiNFO 64 was utilized to monitor and log motherboard sensor readings. Please note that software-based monitoring can have a margin of error ranging from 1-3%, so the given data is purely for reference.

Test Setup

  • CPU: AMD Ryzen 9 7900 (PBO set to Auto)
  • Motherboard: ASRock B650E Taichi (BIOS version: 1.28.AS01 [Beta])
  • RAM: T-Force VULCANα DDR5 5600 MT/s CL40 8GBx2
  • GPU: NVIDIA GeForce RTX 4080 Founders Edition
  • OS: Windows 11 Professional 21H2
  • PSU: be quiet! STRAIGHT POWER 12 1000W

The first test involved using OCCT AVX mode to stress both the processor and graphics card concurrently. After a 30-minute run, readings from the Super I/O environmental control chip on the motherboard were taken. The +12V readings fluctuated between a high of 12.197 V and a low of 12.091 V. The +5V, on the other hand, ranged between 5.112 V at its peak and 5.064 V at its lowest.

OCCT AVX mode software stress test for 30 minutes.
Ryzen 9 7900 has a maximum power consumption of 90 W; RTX 4080 has a maximum power consumption of 310 W.

Following that, a high-load stress test was conducted using AIDA64 FPU + FurMark. These tools are commonly used for evaluating the stability and temperatures of CPUs and GPUs. The dual-stress test involved running both software concurrently, with HWiNFO 64 employed to monitor motherboard stats and document results.

From the data obtained after a 30-minute test, the +12V ranged between a high of 12.121 V and a low of 12.091 V. Meanwhile, the +5V showed readings varying from a peak of 5.072 V to a trough of 5.064V.

AIDA64 FPU + FurMark software stress test, and the data collected during the test.

During the OCCT AVX testing, the FLIR ONE Pro, a dedicated infrared thermal camera for smartphones, was utilized to monitor the temperature of the power supply and its cables. The 12VHPWR cable, designed for the GPU, was plugged directly into the RTX 4080 graphics card’s power slot, bypassing the use of any adapters that came with the card.

The cooling air outlet of the power supply is 42.4 °C.
25.4 °C in the slot area of ​​the power end of the module power supply cable.
The ATX_12V CPU power socket area on the motherboard is 38.4 °C.
NVIDIA GeForce RTX 4080 Founders Edition powered by 12VHPWR 46.9 °C.


Be quiet! STRAIGHT POWER 12 1000W, compliant with the Intel ATX12V 3.0 standard, boasts features like a full-bridge LLC resonant architecture design, +12V single output, DC to DC power conversion technology, and 105°C Japanese capacitors. Furthermore, it’s received the 80 Plus Platinum certification, ensuring both stability and peak conversion performance.

Be quiet! has incorporated their Silent Wings 135mm fan for efficient cooling within the power supply. Even under a full load, the fan’s noise level remains a modest 28.9 dB(A), striking an excellent balance between cooling efficiency and noise reduction. Its power cable natively offers a 600W limit for the 12VHPWR, making it seamlessly compatible with NVIDIA RTX 30/40 series graphics cards without the need for additional adapter cables.

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Title: Unboxing the Platinum-rated be quiet! STRAIGHT POWER 12 with 1000W Capacity: Featuring ATX 3.0 and 12VHPWR