The best small form factor (SFX & SFX-L) PSU currently.
The SilverStone SX1000 is the strongest small factor unit we have tested so far, and it has enough connectors to support a strong gaming system. This is why it is out top choice in the best power supply for gaming (opens in new tab) guide for this category.
The best part is that with lower than 700W loads, its noise output won’t bother you, unless you are super-sensitive, in which case you should not invest on in a high power density power supply in the first place.
Since everything small and powerful is usually expensive, especially in the IT world, the SX1000 will empty your wallet. That said, PSUs are inexpensive given the vital role that they have in every system. Not long ago people paid over 1000 dollars to acquire a mid-level graphics card, so a 250-300 dollar power supply doesn’t look that expensive, especially if you consider that you will keep it for many years.
Specifications
Image 1 of 4
(Image credit: Future)
Image 1 of 4
(Image credit: Future)
Image 1 of 4
(Image credit: Future)
Image 1 of 4
(Image credit: Future)
Image 1 of 4
Technical
Manufacturer (OEM) Enhance Electronics
Max. DC Output 1000W
Efficiency 80 PLUS Platinum, Cybenetics Platinum (89-91%)
Noise Cybenetics Standard+ (35-40 dB[A])
Modular Yes (fully)
Intel C6/C7 Power State Support Yes
Operating Temperature (Continuous Full Load) 0 – 50°C
Protections OVP, UVP, OPP, OCP, SCP, surge
No Load Operation No
Cooling 120mm Double Ball Bearing Fan
Semi-Passive Operation Yes
Dimensions (W x H x D) 125 x 65 x 130mm
Weight 1.39 kg (3.06 lb)
Form Factor SFX-L, EPS 2.92
Warranty 5 Years
Price $338
SilverStone’s SX PSU line consists of two SFX-L units with 750W and 1000W capacities. The SX1000 has a 969W-per-liter power density, among the highest we have seen so far.
SilverStone equipped it with two EPS and six PCIe connectors to ensure it can deliver its full power without any problems. Moreover, all cables are modular, making the PSU’s installation a breeze. Because of the small PCB, the temperatures at the internals can go high, so a double ball-bearing fan was used, which can handle hot conditions without any problems. In general, DBB fans are considered of higher quality compared to FDB, but they are more expensive and this is why the latter dominate the high-end market.
The platform’s design is clean, despite the high power density. Enhance Electronics, the OEM, used large heat sinks on the primary side, with perforations on the APFC heat sink to allow airflow to the components installed below it.
