EVGA Releases Its First SFX Power Supplies

EVGA has a huge number of PSU offerings, however, it hasn't historically taken part in the SFX market. This changed today with the release of the SuperNOVA GM SFX series, which consists of three models with capacities ranging from 450W to 650W. All are fully modular and 80 PLUS Gold-certified. However, there is no information available yet about their efficiency and noise output by Cybenetics.

EVGA SuperNOVA GM SFX Series Features & Specs

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M/N450 GM, 550 GM, 650 GM
OEMNo information available yet
Capacities (W)450, 550, 650
Form FactorSFX
Efficiency80 PLUS Gold
Noise (Cybenetics)No information available yet
ModularYes (fully)
Intel C6/C7 CompliantYes
Operating temperature0°C - 40°C (32°F - 104°F)
ProtectionsOver Voltage Protection Under Voltage Protection Over Power Protection Over Current Protection Over Temperature Protection Short Circuit Protection
Cooling92mm double ball-bearing fan
Semi-Passive ModeYes (non-selectable)
Dimensions (WxHxD)100mm x 63mm x 125mm (3.9 x 2.5 x 4.9 inches)
ComplianceATX12V v2.4, EPS 2.92
EPS Connectors1
PCIe (6+2 pin) Connectors650 GM: 4550 GM: 4 450 GM: 2
SATA Connectors650 GM: 6 550 GM: 4450 GM: 4
4-Pin Molex Connectors650 GM: 4550 GM: 4 450 GM: 4
+12V Max Power650 GM: 649.2W 550 GM: 549.6W 450 GM: 450W
5V & 3.3V Max Power100W
Warranty7 years
Price650 GM: $129.99 550 GM: $119.99 450 GM: $109.99

For those wondering about the manufacturer of those new EVGA GM units, unfortunately we don't have any information at this time. Since we don't have review units, we can only rely on EVGA's comments about this. What we know for sure is that Super Flower was working on a small form factor platform.

Along with the new models, EVGA will also provide an SFX-to-ATX bracket, which will allow the installation in a standard ATX chassis. Moreover, according to EVGA's statement, all capacitors are by Japanese manufacturers, which have higher quality standards compared to Chinese brands. The cooling fan measures 92mm across and uses double-ball bearings (DBBs), while the majority of the competing offerings prefer fluid dynamic-bearing (FDB) fans. The great advantage of DBB fans is that they can cope with heat. On the other hand, they are also more noisy than FDB fans. Since the GM models feature a semi-passive operation, they will at least be silent under light loads.

The 650 GM and 550 GM models have four 6+2 pin PCIe connectors, while the 450W unit has two of those connectors, making those units in-line with the competition. Unfortunately, there is only a single EPS connector even in the strongest member of the line, meaning that it won't be compatible with high-end motherboards and will demand far more juice in the CPU socket area. Nonetheless, someone could argue here that such a mainboard would be overkill for an SFX PSU.

The provided warranty is a long seven years, and for a limited time there's an additional two-year warranty. The 650 GM is sold for $130, the 550 GM for $120 and the 450 GM for $110. You can find all three models in EVGA's online store.

We peg the direct opponents of the fresh EVGA SFX units as being the Corsair SF600 and SF450, which are currently sold for $115 and $85, respectively, on Newegg. However, the 650 GM is now among the strongest SFX units available in the market today, along with the Enermax Revolution SFX 650W and the SilverStone SX650-G. But soon enough (we suspect in November) a major brand will release a 750W SFX unit. The competition in the small form factor PSUs is getting stronger every day.

Contributing Editor

Aris Mpitziopoulos is a Contributing Editor at Tom's Hardware US, covering PSUs.

  • Decends
    This looks interesting for a Ryzen Mini ITX build.
  • jpe1701
    I'd wait for a qualified review. They do make some good power supplies but you never know what Aris or what johnnyguru will find sometimes.
  • g-unit1111
    I'm glad to see that there's more options finally coming out for SFX builds, since when I built my SFX rig there were only 3 options available and they all weren't that good. More competition is better for the industry.
  • eric.m.hudson1
    Nice. I love EVGA PSUs, but have had to use SilverStone SFX series for my Mini ITX builds. Not complaining about SilverStone. They have always been reliable in in my experience, but EVGA has always been my go to PSU in every other build. Too many issues with Thermaltake and Corsair PSUs in the past, but never once has any of the dozen or so EVGA PSUs given me an issue.