EVGA SuperNOVA 550 GS Power Supply

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

Rolling right along, here’s the unit itself.

If it looks the same as the 650 GS, that’s because it comes in the same housing.

The exhaust grille gives us a quick look at some of the innards. As is usually the case for Seasonic builds, I can already tell that the parts around the AC receptacle are housed in a shielded box inside the unit.

Once again, our full power temp spec is fifty degrees. I’ll try to get to that number in the hot box today, but because this unit is rather small in terms of capacity I’m not sure the box will get that hot.

SuperNOVA 550 GS – DC Output
DC Output +3.3V +5V +12V -12V +5VSB
20A 20A 45A 0.3A 2.5A
Max Power @ 50°C 100W 540W 3.6W 12.5W

It should come as no surprise that the modular connectors on this unit are the same as big brother’s. Once again, it also seems that we have the confusing switch labeling… on is off, and off is on. Go by the labels on the housing, not the switch.

Unlike the 650W model, I was able to plug a CPU cable into a VGA socket on this one. I did have to force it a little, but not as much as I should have had to. Don’t do this… the two connectors are not electrically compatible. On the 650W unit, the CPU cables wouldn’t even start to go into the VGA sockets, so I’m willing to put this down as an isolated incident only limited to this particular unit.

Even so, watch where you plug things in with one of these. Some Seasonic based units have interchangeable CPU and VGA cables. This is not one of them.

We’ve already seen a right side up view of this, so we’ll move on.

The fan grille view looks the same as big brother. No shock there. Well, if you stick a screwdriver down in there while the unit is live, there might be a shock, but don’t do that.

The presence of this screw on the top left tells us that once again we are likely going to see an extra heatsink plate again between the mainboard and housing. The presence of everything else tells us that we are likely looking at a power supply at 550 watts from EVGA that is made in China, like every other computer power supply on the planet I can think of.

Unpacking the bags of modular cables, and… oh, there are the screws. They didn’t forget about them.

Huzzah for the only Berg connector in the unit being banished to its own adapter. This is the only way I like them if they’re present at all. I haven’t needed one for a good fifteen years now, and I haven’t really needed the Molex on the other end for years outside my mining rigs either. The mining rigs do need them to power my USB risers and cooling fans.

Two SATA chains come with the unit – a long one and a short one. This is the former. The other one only has two connectors.

Say hello to the ATX cable. Nicely sleeved, with blacked out wires. This is the way I prefer them because ribbon cables just don’t work well for functionality on the ATX.

We get two PCI-e cables on this unit, which is more than enough for a 550W model.

Two CPU cables come with the unit. There’s a longer single connector cable, and…

A double CPU cable here, about 100mm shorter on each side. I don’t see this being very useful for a unit this size, as I only really start expecting them at the 850W level, but it’s not a bad thing it’s here.

One Molex chain comes with the unit, and here it is now.

SuperNOVA 550 GS – Cabling
Type of Cable Length from PSU
Modular Cables
20+4 pin ATX connector 600 mm
4+4 pin CPU 650 mm
CPU Combo 4+4 pin CPU 550 mm
8 pin CPU 550 mm
6+2 pin PCI-e, 6+2 pin PCI-e 550+100 mm
6+2 pin PCI-e, 6+2 pin PCI-e 550+100 mm
SATA+SATA+SATA+SATA 560+95+95+95 mm
SATA+SATA 550+100 mm
5.25″+5.25″+5.25″+5.25″ 550+100+100+100 mm
5.25″ to 3.5″ Adapter 105 mm
Unit Dimensions (L x W x H)
150 mm x 150 mm x 86 mm

Let’s get some load testing done.