EVGA SuperNOVA 550 GS Power Supply

PROD LINK: EVGA’s Current Offerings
PRICE: $84.99 @ NewEgg
Price is at the time of testing!

Performance (40% of the final score) – and so we come to scoring again. With performance, much the same as the larger 650W unit, this one didn’t offer any surprises. Voltage regulation was strictly average on this unit, which is two notches down from excellent. That’ll be a full one point deduction. To this, I will pull another half point for the 12V ripple. Meantime, efficiency was a pass for Gold on both times, so no deductions there. Since I didn’t see anything else to worry about, this category gets an 8.5. Same as big brother.

Functionality (20% of the final score) – functionally, this unit is the same as big brother. So, it’s getting big brother’s score, too. There’s nothing to complain about here at all. 10.

Value (20% of the final score) – this unit comes in at $84.99 at NewEgg right now. As was the case with the larger unit, there’s not a lot competing at that price that’s also fully modular. For example, the Seasonic G series 550W is cheaper, but only semi-modular. The nearest direct competition comes from EVGA itself in the G2 series for five dollars more cash. But you know what? I like the G series platform better than this one right now (until they’ve refined it), and that unit is cheaper. Yeah, it’s only semi-modular, but it’s not like you’re not going to use the hardwired cables anyway. Even so, there’s enough value here to give this unit an 8.5.

Build Quality (20% of the final score) – I’m going to have to dock a couple of half points on this one… first for the lousy soldering on the AC line wires, and second for the loose mainboard screws. I’ll stop there. 9.

SuperNOVA 550 GS – Scoring
Performance 8.5
Functionality 10
Value 8.5
Build Quality 9
Total Score 8.9


We’re starting to get a pretty good picture as to what the lower powered units in EVGA’s GS series look like. Decent performance, if a little unremarkable at times, at a nearly unbeatable price. Once this new platform is tweaked a little to tighten up the voltage regulation, it may become as unstoppable as the G2 series has been. But as is, it’s already pretty good.


  • excellent minor rail ripple control
  • very good 12V ripple control
  • fully modular
  • likes getting warm

The BAD:

  • nothing


  • could do with better voltage regulation

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