POWER SUPPLY (อุปกรณ์จ่ายไฟ) SUPER FLOWER LEADEX GOLD 550W (80+ GOLD) [SF-550F14EG]

Super Flower has made quite an impact on the PSU market. Its Leadex platform enjoys huge popularity, both under SF's brand name and other companies like EVGA. The newest Leadex Gold-rated PSU with 550W capacity is on our test bench today.

Super Flower recently released a new 550W Leadex power supply. In addition to its Gold-rated efficiency, this PSU offers modular cables with cube-shaped and LED-lit connectors, which we usually only see in the company's high-end offerings. On top of that, the SF-550F14MG employs a semi-passive mode that can be disabled if you'd prefer the fan to spin continuously. Speaking of the fan, strangely enough it isn't the same one used in Super Flower's Platinum Leadex PSU with the same capacity

Over in Europe, the price of this unit is very competitive given its high-end features. As you might already know, Super Flower doesn't have a retail presence in the U.S., but you can still find the company's products under the EVGA brand. In essence, EVGA's 550 G2 uses the same platform as the SF-550F14MG PSU, and is available domestically. However, the PSUs are not identical; a couple of notable differences include a smaller fan and Super Flower's cube connectors on the modular cables. There's another crucial distinction between the platforms, and we'll talk more about it on page three.

Lower-capacity PSUs are becoming more popular in the face of Intel's efficient architecture's and Nvidia's Maxwell family of GPUs. A 550W power supply can easily work in a PC equipped with a GeForce GTX 980 Ti and a potent host processor. If you really want to live on the edge, drop in a Radeon R9 390 GPU, which peaks around 370W at stock clocks. But you'll push that 550W PSU to its limit, reducing efficiency and the hardware's useful life. Generally, you want your PSU operating at 40 to 50 percent of its max-rated capacity, since that's where efficiency is often best.

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