EVGA

EVGA SuperNOVA 550 G3

Status: EVGA SuperNOVA 550 G3: Unavailable on Amazon as of 2026-10-21 04:19 UTC. SpecPicks has no in-stock listing with matching specs on file; the search below lists current offers. eBay sellers may still list this model new or used.

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Bottom line: The EVGA SuperNOVA 550 G3: 80 PLUS Gold: 90% efficiency at 115VAC, 92% at 220VAC under typical load; main trade-off: 550W ceiling rules out RTX 4080/4090-class GPUs and high-core-count CPUs.

Unavailable on Amazon as of 2026-10-21 04:19 UTC

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Currently unavailable on Amazon. Not the same product — 3 in-stock alternatives:

Similar: EVGA SuperNOVA 220-G3-1000-X1 — $449.99 on Amazon as of 2026-10-21 04:20 UTC (price may vary).

View Current Price — $449.99

Similar: EVGA SuperNOVA 650 Ga — $219.00 on Amazon as of 2026-10-21 04:20 UTC (price may vary).

View Current Price — $219.00

Similar: EVGA SuperNOVA 850 Ga — $299.99 on Amazon as of 2026-10-21 04:24 UTC (price may vary).

View Current Price — $299.99

Original listing (currently unavailable) → Compare to similar power supplies

By Mike Perry, Founder & Editor-in-Chief · Listing data updated 2026-10-21

Mike Perry — Hardware researcher since 2014, focused on GPU performance across gaming, rendering, and local-LLM inference. Synthesises community benchmarks, manufacturer specs, and public forum data into actionable buying guides. About the author →

Pros & Cons

Pros

✓ 80 PLUS Gold: 90% efficiency at 115VAC, 92% at 220VAC under typical load
✓ Compact 150mm depth fits ITX and micro-ATX cases that reject longer PSUs
✓ ECO mode stops the 130mm HDB fan entirely at low load for silent idle
✓ Fully modular, so unused cables never enter the chassis
✓ 7 year warranty plus 100,000 hour MTBF rating

Cons

✗ 550W ceiling rules out RTX 4080/4090-class GPUs and high-core-count CPUs
✗ No headroom for a future GPU upgrade without replacing the unit
✗ Listing text contradicts itself on warranty: 7 years in title, 10 in description
✗ 130mm fan spins faster than a 140mm unit to move the same air under load

Manufacturer description

The EVGA SuperNOVA 550 G3 is a compact 550W power supply built for small-form-factor and mid-range gaming builds that don't need a 750W headroom tax. Its 80 PLUS Gold certification delivers 90% efficiency at 115VAC and 92% at 220VAC under typical loads, so less of your wall draw turns into waste heat. The fully modular cable design means you only install the connectors your build actually uses, which matters in a chassis where the PSU shroud is already tight, and the 150mm body fits ITX and micro-ATX cases that choke on longer units. EVGA's ECO Thermal Control Fan System keeps the 130mm…

SpecPicks Verdict

SpecPicks scored EVGA SuperNOVA 550 G3 using a rating × review-volume × price-fit model applied to published specs and reviews across the power supplies category. EVGA's power supplies lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for power supplies of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Frequently Asked Questions

Is 550W enough for my gaming PC?

550W covers mid-range builds: a 60-100W CPU paired with a GPU in the 150-250W class, such as an RTX 4060 or RX 7600. It is not sized for 300W+ flagship GPUs. Add up your CPU and GPU TDP, leave roughly 150W for the rest of the system, and stay under 450W sustained.

Will the EVGA SuperNOVA 550 G3 fit in a small case?

It measures 150mm deep, which is the standard ATX length and shorter than the 160-180mm units common at higher wattages. That makes it viable in micro-ATX and many ITX chassis. Check your case spec sheet for PSU clearance before ordering.

Does the fan run all the time?

No. The ECO Thermal Control Fan System keeps the 130mm hydraulic dynamic bearing fan stopped during low-load operation, so the unit is silent at idle and under light desktop use. The fan spins up only as load and temperature rise.

What is the warranty on this power supply?

The product title and feature list state a 7 year warranty with a 100,000 hour MTBF rating. The older marketing copy in the description mentions 10 years, so confirm current terms on the Amazon listing or with EVGA before you rely on a specific figure.

Is it fully modular or semi-modular?

Fully modular. Every cable, including the 24-pin, detaches from the unit, so you install only what your build needs. That keeps unused PCIe and SATA cables out of the chassis and simplifies cable routing behind the motherboard tray.

Key Features

EVGA 550 G3 - "The Next Generation in Power"
80 plus Gold certified, with 90% (115VAC) / 92% (220VAC0-40VAC) efficiency or higher under typical loads
Fan size/ Bearing: 130 millimeter Hydraulic Dynamic Bearing for ultra-quiet perfromace
Heavy-duty protections, including OVP, UVP, OCP, OPP, and SCP
7 year ; MTBF: 100, 000 hours. Operating temperature: 0° to 50° C

Full Specifications

Brand	EVGA
Wattage	550 watts
Fan Size	13 centimeters
Model Name	220-G3-0550-Y1
Unit Count	1 Count
Form Factor	ATX
Model Number	220-G3-0550-Y1
7 year ; MTBF	100, 000 hours. Operating temperature: 0° to 50° C
Built-In Media	AC Power, ATX Cable, EPS Cable, EVGA 550G3 Power Supply, Floppy Adapter, Four-Pin Peripheral Cable, Installation Guide, PCIE Cable, Power Supply Tester, SATA Cable
Connector Type	24-pin
Cooling Method	Air
Item Type Name	Power Supply
Number of Fans	1
Output Wattage	550 watts
Item Dimensions	5.91 x 5.91 x 3.35 inches
Mfr Part Number	220-G3-0550-Y1
Number of Items	1
Fan size/ Bearing	130 millimeter Hydraulic Dynamic Bearing for ultra-quiet perfromace
Compatible Devices	Personal Computer
Power Supply Design	Full Modular
Full listing title	EVGA SuperNOVA 550 G3, 80 Plus Gold 550W, Fully Modular, Eco Mode with New HDB Fan, 7 Year Warranty, Includes Power ON Self Tester, Compact 150mm Size, Power Supply 220-G3-0550-Y1

Ready to buy?

Amazon shows no buyable offer for EVGA SuperNOVA 550 G3 at the last check. A similar in-stock product is EVGA SuperNOVA 220-G3-1000-X1. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

View Similar — $449.99