Be Quiet! 300W TFX Power 3 PSU, Small Form Factor, 80+ Bronze, PCIe, Continuous Power UK-Wide Next Business Day Delivery

The official efficiency certification level awarded to a power supply or other electrical device that meets the international 80 Plus standard, indicating superior energy efficiency compared to non‑certified products. Typical values include Bronze, Silver, Gold, Platinum and Titanium.

The range of alternating current voltage that a power supply or charger can safely accept from its mains source, expressed in volts (V). It specifies the minimum and maximum input voltages compatible with the device, ensuring proper operation across different regions.

The frequency of the alternating current supplied to a power supply or charger, expressed in hertz (Hz). It indicates the acceptable operating range for the electrical mains that powers the device, ensuring proper functionality and safety.

A comma‑separated list of extra functions or characteristics that a product offers, such as special modes, connectivity options, or unique technical capabilities. The values are typically short phrases and may include multiple items for a single product.

The configuration of the power supply’s internal cabling, indicating whether the cables are fully modular, semi‑modular, or non‑modular. This attribute helps users understand how many cables can be detached for easier cable management and system customization.

The colour or combination of colours that a product’s outer shell or enclosure is available in, expressed as common names such as "Black", "Silver" or comma‑separated lists like "Black, White". It indicates the visual appearance of the case for consumers.

The total electrical power available from the +12 V rail of a device, expressed in watts (W). This value indicates how much current can be supplied to components that rely on the +12 V supply and is useful for assessing overall system capacity or compatibility with high‑power peripherals.

The total electrical power that a device consumes or delivers, expressed in watts (W). It represents the overall energy usage of the product during operation and is useful for comparing efficiency, sizing power supplies, and estimating operating costs.

Indicates the types of components, devices or form factors that a product can support or work with. The value may describe supported power supply units, graphics card clearance, memory modules, operating systems, or other hardware specifications.

The method or mechanism used to dissipate heat from a component such as a processor, graphics card, or other electronic part. It indicates whether the device relies on active cooling (fans or liquid pumps), passive heat sinks, or hybrid solutions, and helps users assess thermal performance and noise levels.

The total count of physical power connector sockets on a computer that supply voltage to the central processing unit (CPU). Common types include 4‑pin ATX, 8‑pin EPS, and 12V CPU connectors. This value indicates how many separate power connections are available for the CPU, helping users determine compatibility with power supplies and motherboard configurations.

The linear measurement of an object from front to back or top to bottom, expressed in a physical unit such as millimeters, centimeters, inches, etc. It indicates how deep the item is and can be used for fitting, compatibility, or spatial planning.

The pixel dimensions of a display or image, expressed as width by height (e.g., 1920x1080). It indicates how many pixels are used to render the visual content and is commonly used for monitors, TVs, smartphones, cameras, and digital images.

The efficiency rating expresses the percentage of input power that a product converts into useful output, indicating how well it uses energy compared to similar models. A higher value means less waste and lower operating costs.

The classification of the mechanical bearing used in a fan or cooling component, such as ball, sleeve, fluid dynamic, hydraulic, magnetic levitation, or other specialized types. It indicates the internal design that determines load capacity, noise level, durability and suitability for specific applications.

The linear measurement across the widest part of a fan, expressed in units such as millimeters (mm), centimeters (cm) or inches (in). It represents the overall width of the fan and is useful for determining fit, compatibility with cases, and airflow characteristics.

The total count of physical connector ports present on a floppy drive or its support, indicating how many separate connections are available for power and/or data. This value helps users verify compatibility with power supplies, cables, or adapters.

Specifies the physical configuration or design of a product, such as ATX, Micro‑ATX, Mini‑ITX, tower, case with cover, etc. It describes how the device is built and what mounting or expansion options it supports.

The Harmonized System (HS) code is a standardized numerical identifier used internationally to classify traded goods. It consists of up to six digits, where each pair of digits represents progressively more specific product categories. The HS code facilitates customs duties, trade statistics, and regulatory compliance by providing a common language for describing products across borders.

The vertical dimension of a product measured from its lowest to highest point. It is expressed in a physical unit such as millimetres, centimetres or inches and applies to any item where height is relevant, including books, electronics, furniture and other objects.

The duration that a device or component maintains a state after an input or event, expressed in milliseconds (ms). It indicates how long the system holds a signal or condition before resetting or changing, which is useful for timing-sensitive applications such as power supplies, control circuits, and electronic devices.

The electrical current drawn by a device when powered, expressed in amperes (A). It indicates how much current the product consumes from its power source during normal operation and can be used to assess compatibility with power supplies or USB ports.

The highest electrical current that a device can supply from its +3.3 V rail, expressed in amperes (A). This value indicates the maximum load capacity of the power supply or regulator for components powered at 3.3 V and helps users verify compatibility with devices requiring this voltage level.

The highest electrical current that a device can supply to its +5 Vsb power rail under normal operating conditions. This value indicates the maximum load the +5 Vsb output can handle and helps users verify compatibility with components such as fans, LEDs, or other peripherals that draw power from this rail.

The highest electrical current that a device can deliver from its –12 V rail under normal operating conditions, expressed in amperes (A). This value indicates the maximum output capability of the –12 V supply and helps users verify compatibility with power supplies or other components that require this voltage level.

Indicates whether a product supports modular components or systems, such as modular power supplies, network switches, or other hardware that can be expanded or replaced with compatible modules.

Indicates the type of cable configuration a power supply offers: fully modular, semi‑modular, or non‑modular. A value of "Modular" means all cables can be detached and reconnected; "Semi‑Modular" indicates that some cables are detachable while others remain permanently wired; "No" (or "Non‑Modular") signifies that all cables are fixed to the unit.

The total count of Molex power connector ports present on a product, expressed as an integer without units. This value indicates how many Molex interfaces are available for connecting peripherals or components that require this type of connection.

The linear distance that the motherboard power cable covers, expressed with a standard unit of length such as meters, centimeters or inches. It represents the total usable length available to connect the motherboard to its power supply and other components.

The type of main power connector used on a motherboard, such as the standard ATX 24‑pin or the 20+4 pin variant. It indicates which cable and socket are required to supply power from the power supply unit to the board.

The pin configuration of the power connector(s) used by a motherboard, expressed as a textual description such as "4 + 8-Pin" or "4-Pin x 2". It indicates how many pins are present in each connector and whether multiple connectors are required for proper operation.

The sound intensity produced by a product during operation, expressed in decibels with A‑weighting (dB(A)). This value indicates how loud the device is and helps users assess suitability for quiet environments or noise‑sensitive settings.

The total count of SATA power connectors available on a power supply or motherboard. It indicates how many physical SATA power ports can be used to connect storage devices such as hard drives, SSDs, or optical drives. The value is an integer and helps users determine the expansion capacity for SATA-based storage.

The range of temperatures in which a product can safely operate without risk of damage or performance degradation. Values are expressed in degrees Celsius (°C) and may represent a single temperature, a minimum–maximum interval, or an average operating point.

The form of packaging used for a product, such as box, blister pack, bag, or pallet. It indicates how the item is contained and protected during shipping and storage.

The linear distance that a PCI Express power cable covers, expressed with a length unit such as meters, centimeters or inches. It represents the total usable length of the cable for connecting a power supply to a motherboard or other PCI Express device.

The arrangement of pins on a PCI‑Express connector, indicating how many power and data pins are present (e.g., "6+2-Pin", "8-Pin", "12+4-Pin"). This attribute helps determine compatibility with motherboards, GPUs, or other expansion cards that require specific pin counts for proper operation.

The maximum electrical power that a product can draw or deliver during its operation, expressed in watts (W). It represents the highest instantaneous power requirement or output of the device and is useful for sizing power supplies, ensuring compatibility with outlets, and estimating peak energy consumption.

The ratio of real power to apparent power in an electrical system, expressed as a unit‑less number between 0 and 1. It indicates how efficiently the device converts supplied voltage into useful work; values closer to 1 mean less reactive power and higher efficiency.

A comma‑separated list of the electrical protection mechanisms built into a device, such as overcurrent, overload, short circuit, under voltage, and overheating safeguards. The attribute indicates which protective features are present to protect the equipment and connected components from abnormal power conditions.

The physical configuration or design of a power supply unit, such as ATX, TFX, SFX, or 1U. It indicates the dimensions and mounting options that determine compatibility with computer cases and other hardware.

A comma‑separated list of protective features that a product offers, such as resistance to dust, water, shock, heat, or other environmental factors.

The primary purpose of a product, indicating its main intended use or target market segment (e.g., "Gaming", "Office", "Travel"). It helps customers quickly identify whether the item matches their needs and can be used for filtering or categorization across different product categories.

The number of times per second that a display updates its image, expressed in hertz (Hz). It indicates the smoothness and responsiveness of motion on the screen; higher rates generally provide a more fluid visual experience.

A list of safety and regulatory certifications that a product complies with, such as CE, UL, FCC, or other regional standards.

The linear distance that a SATA power cable can cover, expressed in a standard unit of length such as millimetres (mm), centimetres (cm) or inches. It represents the total usable length of the cable for connecting a SATA power connector to a device.

The vertical dimension of the inner case or packaging measured from its lowest to highest point, expressed in a physical unit such as millimetres, centimetres or inches. It applies to any product where the internal dimensions of the shipping or protective case are relevant.

The linear dimension of the inner case or enclosure of a product, measured in a standard unit such as meters, centimeters or inches. It represents the overall length of the internal space available for components or accessories and is useful for comparing sizes across similar items.

The horizontal dimension of a product’s inner case or enclosure, measured in a linear unit such as millimetres or inches. It indicates how wide the interior space is from one side to the other and is used for sizing, fitting, and compatibility purposes with components that must fit inside the case.

A list of environmental, safety or quality certifications that a product has obtained from recognized authorities. Typical entries include RoHS, ENERGY STAR, CE, WEEE, TCO Certified, FCC, and other industry‑specific standards.

Indicates whether the product meets environmental and sustainability standards, such as reduced hazardous substances, energy efficiency, or other green certifications.

The mass of the product expressed in a standard unit such as grams or kilograms. It represents how heavy the item is and can be used for shipping calculations, handling instructions, or consumer information.