Silverstone Announces Two New SFX Power Supplies: SX500-G & SX650-G
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Small Form Factor (SFF) sized PCs have been around for many years and its popularity seems to be growing. Consumers have more choices today than just a few years ago. Be it cases, motherboards, graphics cards, or power supplies, there are more options out there than ever. Some of these systems require smaller than a standard ATX sized power supply. One of the more popular form factors for these systems is named SFX. The SFX dimensions are notably smaller than ATX allowing PSUs to fit in small cases while still delivering adequate power and having appropriate connectivity.
Silverstone started in the high-performance SFX market in 2012 when it released the 450W ST45SF-G power supply. Fast forward a couple of years and a few other PSU releases in that time brings us to now. Today, Silverstone revealed two new SFX power supplies, the 80 Plus Gold rated SX500-G and SX650-G, offering larger fans for quiet operation, more wattage in the same space, and refined internals while still conforming to the dimensions of the SFX form factor. Both new PSU's OEMs are said to be High Power, while the older ST45SF-G and SX600-G are Enhance units.
Silverstone offers SFX PSUs from 300W in the ST30SF V2.0 up to 650W in the true SFX form factor (up to 100mm/3.9" deep) as well as 700/800W models using SFX-L form factor which extends the length to 130mm. Not resting on past accolades, Silverstone says they have improved those designs by putting more power in the same amount of space and using a larger 92mm fan to keep noise levels down. The fan curve has also flattened out quite a bit staying below 1000 RPM through 50% load. The fan starts to ramp up aggressively around the 75% mark topping out over 3500 RPM. Silverstone says the 92mm fan has a 18dbA minimum rating so it should be quiet using the less aggressive fan curve staying below that ramp up point. While users will not find a 'fan off' mode, Silverstone does say they are quieter than their less powerful predecessors. In our review, the SX600-G did struggle to deliver its maximum power inside a hot environment and had di
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