EVGA

EVGA SuperNOVA 850 G2

Status: EVGA SuperNOVA 850 G2: Unavailable on Amazon as of 2026-10-06 04:26 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 850 G2: 80 PLUS Gold certified with up to 90% efficiency under typical loads; main trade-off: 850W caps headroom for dual-GPU or heavily overclocked HEDT builds.

Unavailable on Amazon as of 2026-10-06 04:26 UTC

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

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Similar: EVGA SuperNOVA 850 Ga — $265.34 on Amazon as of 2026-10-06 04:14 UTC (price may vary).

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Similar: EVGA SuperNOVA 220-G3-1000-X1 — $449.99 on Amazon as of 2026-10-06 12:20 UTC (price may vary).

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

By Mike Perry, Founder & Editor-in-Chief · Listing data updated 2026-10-06

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 certified with up to 90% efficiency under typical loads
✓ ECO Mode stops the 140mm fan entirely at low load for silent desktop use
✓ 10 year warranty, one of the longest offered on an 850W unit
✓ Full protection suite: OVP, UVP, OCP, OPP, and SCP

Cons

✗ 850W caps headroom for dual-GPU or heavily overclocked HEDT builds
✗ Gold, not Platinum or Titanium, so efficiency trails top-tier models
✗ 140mm fan depth may crowd cable routing in short-PSU-bay cases
✗ Included Power On Self Tester is basic and duplicates what most builders own

Manufacturer description

The EVGA SuperNOVA 850 G2 is a fully modular 850W power supply built for gaming rigs and workstations that need clean, sustained power across long sessions. It carries 80 PLUS Gold certification, reaching up to 90% efficiency under typical loads, so less of what you draw from the wall turns into waste heat inside your case. EVGA's ECO Thermal Control Fan System keeps the 140mm double ball bearing fan completely stopped during low-load operation, which means silent desktop use and a fan that only spins up when the wattage actually calls for it. Inside, a 100% Japanese capacitor design backs…

SpecPicks Verdict

SpecPicks scored EVGA SuperNOVA 850 G2 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 850W enough for an RTX 4080 or 4090 build?

850W is the widely recommended tier for a single high-end GPU paired with a mainstream CPU. For a 4090 plus an overclocked flagship CPU, check the GPU maker's stated PSU recommendation before buying, since transient spikes vary by card.

How long is the EVGA SuperNOVA 850 G2 warranty?

EVGA lists a 10 year warranty on this unit. Registration requirements and transfer terms can change, so confirm current warranty terms on the product listing before purchase.

Does the fan run all the time?

No. EVGA ECO Mode uses the ECO Thermal Control Fan System to keep the 140mm double ball bearing fan stopped during low-load operation, so the PSU is silent at idle and light desktop workloads.

Is this power supply fully modular?

Yes, it is fully modular, so every cable including the 24-pin detaches. You only install the cables your build actually uses, which reduces clutter and improves airflow.

What protections does it have against power faults?

It includes heavy-duty protections: over voltage (OVP), under voltage (UVP), over current (OCP), over power (OPP), and short circuit (SCP). EVGA also specifies a 100% Japanese capacitor design.

Key Features

EVGA 850 G2 - "Next Generation in Power"
80 PLUS Gold certified, with up to 90% efficiency under typical loads
Fan Size / Bearing: 140mm Double Ball Bearing.
Heavy-duty protections, including OVP, UVP, OCP, OPP, and SCP
10 Year

Full Specifications

Brand	EVGA
Wattage	850 watts
Fan Size	14 centimeters
Model Name	EVGA CORPORATION
Form Factor	SFX
Model Number	220-G2-0850-XR
Built-In Media	AC Power, ATX Cable, EPS Cable, EVGA 850G2 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	SuperNOVA 850 G2, 80+ GOLD 850W, Fully Modular, EVGA ECO Mode, 10 Year Warranty, Includes FREE Power On Self Tester
Number of Fans	1
Output Wattage	850 watts
Item Dimensions	7 x 5.9 x 3.4 inches
Mfr Part Number	220-G2-0850-XR
Number of Items	1
Compatible Devices	Personal Computer
Fan Size / Bearing	140mm Double Ball Bearing.
Power Supply Design	Modular
Warranty Description	10 years
Maximum Input Voltage	240 volts
Full listing title	EVGA SuperNOVA 850 G2, 80+ GOLD 850W, Fully Modular, EVGA ECO Mode, 10 Year Warranty, Includes FREE Power On Self Tester Power Supply 220-G2-0850-XR

Ready to buy?

EVGA SuperNOVA 850 G2, 80+ GOLD 850W, Fully Modular, EVGA ECO Mode, 10 Year Warranty, Includes FREE Power On Self Tester Power Supply 220-G2-0850-XR is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

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