On the stage of PC components, be quiet! Synonymous with excellence, it is known for its blend of quiet functionality and exceptional performance. The company’s products range from high-end power supply units (PSUs) to sophisticated chassis and cooling solutions, including air and liquid options, and are carefully engineered to reduce noise while maximizing efficiency. Quiet! It has earned praise for its commitment to near-silent operation across its entire product line, making it a top choice among the PC enthusiast community looking for a quiet computing environment. The diversity of its products reflects a deep understanding of the needs of technology enthusiasts and professionals, with each product designed to provide a combination of low noise levels and high efficiency.
Today we are going to see if he is quieter! The Straight Power 12 750W PSU is the high-end product in Be Quiet!’s power supply portfolio and reflects the brand’s approach to product design. The Straight Power 12 Series is designed to deliver top performance and ultra-quiet operation, appealing to users looking for the best combination of power efficiency and sound levels, without compromising on reliability and premium quality. The 750-watt model we’re reviewing today is the weakest unit in the range, but is still enough to easily power modern gaming systems with mid-range GPUs.
| Quiet! Direct power 12750W Power Specifications (Rated @ 50 °C) |
|||||
| rail | +3.3V | +5V | +12V | +5Vsb | -12V |
| maximum output | 25A | 25A | 62.5A | 3A | 0.3A |
| 130W | 750W | 15W | 3.6W | ||
| all | 750W | ||||
| 80PLUS Rating | platinum | ||||
| AC input | 100 – 240 VAC, 50 – 60 Hz | ||||
| Suggested retail price | $140 | ||||
packaging and bundling
The Straight Power 12 750W PSU comes in a stylish package, sticking to an elegant all-black design that’s quiet! We’re used to it, the power snap taking center stage on the front. Inside the box is a nylon bag and foam padding to ensure the device is scratch-free when it reaches you. Information about the device and its capabilities is printed on the sides and back of the box.
In keeping with Be Quiet!’s focus on delivering the essentials, the Straight Power 12 750W packs everything you need to get it up and running. Inside, you’ll find a basic set of mounting screws, an AC power cord, and a lot more – a detailed manual and some zip ties and two to secure the two modular cable bundles together Cable straps.
What sets Straight Power 12 apart is the design of the modular cable itself. It features a fully modular design that allows every DC power cord to be removed, even the 24-pin ATX connector common today. However, the all-black cables all have nylon sleeves for a uniform look, unlike most competitors that are trying to get rid of nylon sleeves and use ribbon cables instead.
| Quiet! Direct power 12750W | ||
| Connector type | hardwired | Modular |
| ATX 24-pin | – | 1 |
| EPS 4+4 pin | – | 1 |
| EPS 8 pin | – | 1 |
| PCIe 5.0 | – | 1 |
| PCI-E 8-pin | – | 4 |
| SATA | – | 9 |
| Molex | – | 2 |
| floppy disk | – | – |
Quiet! Pass-through power supply 12 750W PSU
Exterior
Quiet! The Straight Power 12 750W PSU is packaged in a chassis that measures 86 mm × 150 mm × 160 mm (H × W × D), making it slightly longer than the official ATX PSU dimensions. It fits easily into a variety of modern PC cases, especially those designed with high-performance components. Dimensions have been precisely chosen to accommodate a 135mm cooling fan, ensuring efficient thermal management.
Quiet! We paid special attention to the aesthetics of the Straight Power 12 750W, a detail that stands out for a product designed to deliver quality and performance. The unit has a satin black finish for a sophisticated look, with the company logo elegantly embossed on the right side of the chassis. The fan finger guard is uniquely designed with a unique parallel line structure that enhances the overall appearance of the PSU. There’s a sticker on the left showing electrical specifications and certifications, keeping the balance between functionality and design sophistication, while the top keeps things stylish and simple.
On the back you’ll find the usual switches next to the AC input, and the front of the unit is dominated by modular cable connectors, each labeled with a clear white legend for easy identification. It is worth noting that Straight Power 12 750W uses ATX 3.0 PCI 5.0 600W (12VHPWR) connector, highlighting its compliance with the latest ATX 3.0 standard. This makes it an excellent choice, especially given its power output, which can support the latest, power-hungry GPUs, but system builders will need to consider the balance of system components – although the Straight Power 12 750W PSU theoretically can It can power the most power-hungry GPUs out there, but it can’t handle both the GPU and the power-hungry CPU at the same time.
interior design
Quiet! The Straight Power 12 750W PSU features a cooling fan from its renowned line SilentWings 3 135mm, an all-black design and a Fluid Dynamic Bearing (FDB) engine for improved durability and efficiency. This model opts for a slightly larger fan than PSU standards, supporting the device’s design philosophy of superior cooling without compromising on noise. Despite its larger size, the fan can spin at up to 1800 RPM, which is high speed for a 135mm fan and unusually powerful for a 750W device.
The Straight Power 12 750W PSU is crafted by FSP, an original equipment manufacturer (OEM) known for its important position in power supplies, catering to the needs of the mid- to high-end market. FSP occupies a prominent position among elite PSU manufacturers with its long history and extensive expertise in developing PC power supplies. Their reputation within the industry for producing high-quality and reliable equipment makes them a trusted brand for consumers and professionals looking for reliable power solutions.
The Straight Power 12 750W PSU combines performance with reliability using a fairly advanced yet proven topology. The unit is equipped with a slightly enhanced filtering stage, with four Y capacitors, two X capacitors and two solid filter inductors, forming a pair of standard rectifier bridges, which can be found on its dedicated small heat sink. Its active power factor correction (APFC) circuitry is mounted on a large heat sink at the edge of the PCB. This part has two APFC MOSFETs (R6030KNX) and a diode, supplemented by a filter inductor wrapped in a plastic sleeve and two high-quality Rubycon capacitors (330 μF each).
For its inverter primary, the Straight Power 12 750W PSU uses a full-bridge LLC topology, which is a proven choice for high-performance power supplies. The four bridge MOSFETs are located on the same long heat sink, which also houses the APFC assembly. The secondary is slightly different from the norm, with four MOSFETs on the back of the PCB responsible for synchronous rectification of the main 12V line. A typical vertical daughter board contains DC-DC conversion circuitry for generating 3.3V and 5V lines.
The secondary-side capacitors use a mix of premium Rubycon and Nippon Chemi-Con components, demonstrating a commitment to top quality and reliability. The choice of capacitors makes the Straight Power 12 an all-Japanese product, as expected for its class.
