PCCooler YS850 review: specs and price

The form factor of the PSU. This refers to the physical size and shape, and is important to ensure compatibility with your PC case.

Indicates which Intel ATX design guide the PSU follows. This standard defines requirements for efficiency, standby power, and system compatibility.

Specifies which PCIe power standard the PSU supports. This determines the connector type and how much power can be delivered to the GPU.

When covered under the manufacturer’s warranty it is possible to get a replacement in the case of a malfunction. Note: This may vary by region.

The date the product first became available for purchase.

The height represents the vertical dimension of the product.

The width represents the horizontal dimension of the product.

The thickness (or depth) of the product.

The maximum continuous power that the PSU can provide. It's important to choose a wattage that matches the needs of your PC components.

80 Plus is a certification program that rates the efficiency of PSUs at different loads. The levels range from Bronze to Titanium, with higher levels requiring higher minimum efficiency.

Cybenetics is an independent certification program that tests PSUs for overall power efficiency. The ratings go from Bronze (84–87% efficiency) to Diamond (over 95% efficiency).

Cybenetics is an independent certification program that tests PSUs for their acoustic performance. The ratings go from Standard (40–45 dB) to A++ (under 15 dB).

The maximum rpm (rotations per minute) of the fans.

The maximum noise level of the device.

The number of ATX 24 Pin (or 20+4 Pin) connectors that the PSU has.

The number of 12V-2x6 Pin connectors that the PSU has.

The number of 12VHPWR connectors that the PSU has.

The number of PCIe 6+2 Pin connectors that the PSU has.

The number of EPS 4+4 Pin (CPU 4+4) connectors that the PSU has.

The number of EPS 8 Pin (CPU 8) connectors that the PSU has.

The number of SATA connectors that the PSU has.

The number of Molex (also known as PATA or Peripheral) connectors that the PSU has.

Non-modular PSUs come with cables permanently attached to each connector, semi-modular PSUs have a mix of fixed and detachable cables, and fully modular PSUs allow you to connect only the cables you need. Having less cables improves airflow and makes cable management easier.

The power protection features of the PSU, such as short-circuit protection (SCP) or under-voltage protection (UVP).

The type of bearings used in the fans affects lifespan, noise, and performance. Ball bearings are affordable but can be noisier, whereas fluid dynamic bearings usually offer the best performance and quieter operation.

Zero RPM mode is a feature that can completely turn off the PSU fan when at low temperatures. This allows for completely silent operation of the PSU when under low/no load.