The difference between TFX SFX power supplies

2023 05/11

Both terms, TFX and SFX, relate to the power supply standard, a very important concept in computer assembly. both TFX and SFX are small power supply sizes, small and easy to install, able to meet tight case space requirements and commonly used in some micro, mini and HTPC scenarios. Because of their specific specifications, there are many differences between the TFX and SFX.Computer Case

Firstly, the specifications come from a different source; the TFX power supply specification was developed by Intel and was aimed at the needs of the market for building small systems, mini systems or smaller computers, while the SFX power supply specification was developed by SilverStone.Keyboard Mouse

Secondly, there is a difference in size: the SFX power supply is 10 x 12.5 x 6.35cm, while the TFX power supply is 8.5 x 7.5 x 6.1cm. as you can see, the SFX is a little larger than the TFX, but both sizes are smaller than a standard ATX power supply.

Thirdly, the power is different, as the SFX power supply usually provides 200-300 watts of power, while the TFX power supply usually provides 250-350 watts of power. the SFX power supply is more suitable for low-power devices, such as office use or home users, while the TFX power supply is suitable for more powerful systems, such as gaming consoles.Motherboard Graphics Card

Fourthly, the number of power connectors is different, as SFX power supplies have 3-4 SATA power connectors, 1 24pin motherboard power connector and 1 4pin CPU power connector. TFX power supplies usually provide 3-4 SATA power connectors, a 20+4pin motherboard power connector and a 4pin CPU power connector. Although the two power supplies differ slightly in the number of connectors, they both offer sufficient power connection capability.

Fifthly, the power supply fans are different: SFX power supplies are usually single fan cooled, while TFX power supplies are usually dual fan cooled, which provides better cooling compared to single fan cooling.

For the average computer user, these differences may seem inconsequential, but for some specific application scenarios, they are very important. If you need to install a power supply in a very small case space, then the SFX power supply is better for you. If you need more power and better cooling, then the TFX power supply is more suitable for you. Overall, both power supply sizes are perfect for small computer systems and some other tight spaces, but you will need to consider your specific needs when choosing.