Super Flower Leadex VII XG 1300W Power Supply: features and specs

The Super Flower Leadex VII XG (model SF-1300F14XG) is a 1300W desktop power supply for PCs with demanding graphics cards and processors. It follows the newer ATX 3.0 and 3.1 standards and comes with a native cable for the 16-pin graphics card connector. Here is what its main figures and features mean.

What 1300W means in a PC

A power supply converts mains electricity into the lower voltages that PC parts use. The wattage is the maximum it can deliver, not what the PC draws all the time. A system usually uses well under the maximum, and supplies tend to run most efficiently around the middle of their load range. A 1300W unit is aimed at high-end builds, such as a powerful graphics card with a fast processor, or a system with more than one graphics card. Super Flower says the unit supports NVIDIA SLI and AMD CrossFire multi-card setups.

ATX 3.1 and the 16-pin connector

Super Flower says the unit complies with ATX 3.0 and 3.1, and that it is Intel ATX 3.0 certified and PCIe Gen 5 ready. The newer standards matter mainly for modern graphics cards, which can draw sharp, brief power spikes. The brand says the supply supports up to 200% power excursion, so it is built to ride out those transients.

The box includes a 12VHPWR cable that runs from two 8-pin sockets on the modular panel to a 16-pin (12V-2x6) plug on the graphics card end. The listing also says the design avoids problems from bending the cable at a sharp angle. Whatever the design, it is general good practice to push the connector in fully and leave some straight cable before any bend, as the graphics card maker advises.

Efficiency: 80 PLUS Gold and Cybenetics Platinum levels

Efficiency describes how much of the power drawn from the wall reaches the PC, with the rest lost as heat. The unit is 80 PLUS Gold certified, with efficiency of 87%, 90% and 87% at 20%, 50% and 100% of rated load. It also holds Cybenetics Platinum certification, which the brand gives as 89% to under 91% overall at 115V input and 91% to under 93% at 230V input. Higher efficiency typically means less waste heat and less fan noise for a given load.

Voltage regulation, protections and the fan

Super Flower lists tight regulation of ±0.5% on the 12V, 5V and 3.3V rails, along with low ripple and improved response to sudden load changes. Those figures describe how steady the voltages stay as demand moves up and down.

Protection features listed include over-voltage, over-current, over-power, short-circuit, under-voltage and over-temperature protection, plus surge and inrush protection. Cooling comes from a 140mm fluid dynamic bearing (FDB) fan, which the brand says gives accurate speed control and low noise. There is also an automatic and ECO fan mode.

Modular cables and fit

The unit is fully modular, with flat ribbon-style cables, so you connect only the cables the build needs. This helps with cable management and airflow. The listing gives the dimensions as 5.9 x 5.9 x 3.4 inches (about 15 x 15 x 8.6 cm), which suggests an ATX-sized unit of a typical form factor. Confirm the exact fit in the maker's specifications.

It accepts 100V to 240V input with active power factor correction. The brand also lists Japanese 105°C capacitors.

Who it suits

It suits builders planning a high-end system, those who want the native 16-pin graphics cable, and people who prefer fully modular cabling. Anyone with a modest system won't use that much capacity.

What to check before you buy

• Total power draw: add up the processor and graphics card requirements and compare to 1300W.
• Graphics card connector: check which power connector your card uses and whether the included cable matches it.
• Case fit: confirm your case supports the supply's size and has room for the cables.
• Cable count: make sure the supplied connectors cover your drives and other parts.
• Mains supply: follow local electrical codes and the manual for installation.

The short version

• A 1300W, fully modular ATX 3.1 power supply, model SF-1300F14XG.
• Native 16-pin (12V-2x6) cable for PCIe 5.0 graphics cards.
• 80 PLUS Gold and Cybenetics Platinum certified.
• 140mm FDB fan with automatic and ECO control.
• Full range 100V to 240V input with a set of listed protections.

Bloiq is reader-supported. Some links may earn us a commission; it never affects what we write. How we make money.