EVGA
EVGA SuperNOVA 650 GM
Status: EVGA SuperNOVA 650 GM: Unavailable on Amazon as of . 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.
Bottom line: The EVGA SuperNOVA 650 GM: 650W in an SFX chassis with 54.1A on a single +12V rail; main trade-off: 650W cap leaves little headroom for high-draw flagship GPUs.
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Currently unavailable on Amazon. Not the same product — 3 in-stock alternatives:
Similar: EVGA SuperNOVA 120-GP-0650-X1 — $159.87 on Amazon as of 2026-10-21 04:20 UTC (price may vary).
Similar: EVGA SuperNOVA 650 Ga — $219.00 on Amazon as of 2026-10-21 04:20 UTC (price may vary).
Similar: MSI MAG A650GL — $79.99 on Amazon as of 2026-10-21 04:20 UTC (price may vary).
Pros & Cons
Pros
- ✓ 650W in an SFX chassis with 54.1A on a single +12V rail
- ✓ 80 Plus Gold: 90% efficient at 115VAC, 92% at 220-240VAC
- ✓ Fully modular cables reduce clutter in small form factor cases
- ✓ 92mm double ball bearing fan with ECO Mode for low-load quiet
- ✓ 7-year warranty plus 100% Japanese capacitors and full protections
Cons
- ✗ 650W cap leaves little headroom for high-draw flagship GPUs
- ✗ Gold rating, not Platinum or Titanium efficiency
- ✗ No ATX adapter bracket listed in specs; verify before ATX case use
- ✗ Connector counts not detailed in listing; confirm GPU power plugs
Manufacturer description
The EVGA SuperNOVA 650 GM puts a fully modular, 80 Plus Gold power supply into the compact SFX form factor, so you can power a capable gaming PC from a small form factor case. It delivers up to 650 watts with 54.1A on a single +12V rail. That is enough for a mainstream CPU paired with a midrange graphics card, without splitting load across rails. Efficiency is rated at 90% or higher at 115VAC and 92% or higher at 220-240VAC under typical loads, so less energy is lost as heat inside a cramped chassis. A 92mm double ball bearing fan handles cooling, and ECO Mode lets the fan stay idle at lower…
SpecPicks Verdict
SpecPicks scored EVGA SuperNOVA 650 GM 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
Will the EVGA SuperNOVA 650 GM fit in a standard ATX case?
It is an SFX form factor unit, built for small form factor cases. The listed specs do not mention an ATX mounting bracket, so check the product listing or your case's SFX support before planning an ATX install.
How much +12V power does the 650 GM provide?
It can supply up to 650 watts total, with 54.1A available on the +12V rail, which is where the CPU and graphics card draw most of their power.
Is the EVGA 650 GM fully modular?
Yes. Every cable is detachable, so you connect only the cables your build uses. That keeps airflow clear in compact cases.
What does ECO Mode do on this power supply?
ECO Mode controls the 92mm double ball bearing fan so it can stay off at lower loads, cutting noise during light use. The fan spins up as load and temperature rise.
What warranty and protections does the SuperNOVA 650 GM have?
EVGA covers it with a 7-year warranty. It includes over-voltage, under-voltage, over-current, over-power and short-circuit protection (OVP, UVP, OCP, OPP, SCP) and uses 100% Japanese capacitors.
Key Features
- 650W SFX form factor
- 80 PLUS Gold certified, with 90% (115VAC) / 92% (220VAC to 240VAC) efficiency or higher under typical loads
- Fan Size/ Bearing: 92 millimeter double Ball Bearing
- Heavy-duty protections, including OVP, UVP, OCP, OPP, and SCP
- 7 year
Full Specifications
| Brand | EVGA |
|---|---|
| Wattage | 650 watts |
| Model Name | 123-GM-0650-Y1 |
| Form Factor | SFX |
| Model Number | 123-GM-0650-Y1 |
| Connector Type | 24-pin |
| Cooling Method | Air |
| Item Type Name | EVGA Supernova 650 GM, 80 Plus Gold 650W, Fully Modular, ECO Mode with DBB Fan, 7 Year Warranty, Includes Power ON Self Tester, SFX Form Factor, Power Supply 123-GM-0650-Y1 |
| Number of Fans | 1 |
| Output Wattage | 650 watts |
| Item Dimensions | 10.55 x 3.82 x 7.68 inches |
| Mfr Part Number | 650GM |
| Number of Items | 1 |
| Fan Size/ Bearing | 92 millimeter double Ball Bearing |
| Compatible Devices | Personal Computer |
| Power Supply Design | Full Modular |
| Warranty Description | 7 years |
| Maximum Input Voltage | 240 volts_of_alternating_current |
| Minimum Input Voltage | 220 volts |
| Item dimensions L x W x H | 10.55 x 3.82 x 7.68 inches |
| Full listing title | EVGA SuperNOVA 650 GM, 80 Plus Gold 650W, Fully Modular, ECO Mode with DBB Fan, 7 Year Warranty, Includes Power ON Self Tester, SFX Form Factor, Power Supply 123-GM-0650-Y1 |
Ready to buy?
Amazon shows no buyable offer for EVGA SuperNOVA 650 GM at the last check. A similar in-stock product is EVGA SuperNOVA 120-GP-0650-X1. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
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