EVGA SuperNOVA 1000 GT Review: Gold PSU After the GPU Exit

By LK Wood IV · Published 2026-06-18 · Updated 2026-09-08 · ~9 min read · St. Louis County, MO

Rating: 4.3 / 5

The EVGA SuperNOVA 1000 GT is one of the better PSUs I’ve used. Its maker exited the GPU market in 2022, but that event does not settle a PSU warranty question. For a purchase today, compare the exact unit’s condition and documented coverage with its price.

I ran the SuperNOVA 1000 GT in my primary build — Ryzen 7 7800X3D, ROG Astral RTX 5080 OC, ROG STRIX B650-A, 64GB DDR5 — for an extended period. This is the review that follows real use.

What EVGA shipped

Published specifications (per EVGA’s published product specifications):

• Capacity: 1000W
• Efficiency rating: 80 Plus Gold
• Modular: fully modular
• Fan: 135mm FDB bearing, zero-RPM mode up to 40% load
• ATX connector: 1× 24-pin
• EPS/CPU connectors: 2× 8-pin (4+4)
• PCIe connectors: 4× 6+2 pin (plus the SuperNOVA 1000 GT shipped with a 12VHPWR adapter for NVIDIA RTX 40-series and later GPUs)
• Warranty: 10 years (verify current EVGA warranty support before relying on it)
• Dimensions: 160mm depth (ATX standard)
• Platform: Seasonic Focus GX-derived

The fully modular design is meaningful in practice. Unused cables stay in the bag, cable routing in the case is cleaner, and if a cable fails, you replace the cable rather than the PSU. The SuperNOVA GT series was consistently recommended over the GQ (semi-modular) line for this reason.

Efficiency in practice

80 Plus Gold means at least 87% efficiency at 20% load, 90% at 50% load, and 87% at 100% load (at 115V AC per 80 Plus specification). The Seasonic Focus GX platform consistently measures at or slightly above rated efficiency in third-party testing.

At my typical gaming load (~450W combined system draw), the 1000 GT runs at 45% utilization — squarely in its efficiency sweet spot. A Seasonic Focus GX-1000 measured at Cybenetics labs shows roughly 91–92% efficiency at the 50% load point. I use this as a proxy for the SuperNOVA GT given the shared platform, not as a direct measured spec for the EVGA unit.

At the Power & Cost Calculator: that 450W is DC output, so figure roughly 495W at the wall at 91% efficiency. Four hours a day of gaming at $0.184/kWh (the EIA May 2026 US residential average, and the calculator’s default) is about $11/month on its own — but the calculator bills the other twenty hours too, and that is where the real number lives. At the 80W idle its RTX 5080 preset assumes, the same machine runs about $20/month, or roughly $240/year. Enter draw as a meter reports it; the tool has no PSU-efficiency field, so do not feed it an efficiency-adjusted figure. The Gold-versus-Bronze gap is smaller than it sounds at this duty cycle: 450W of DC load pulls about 495W at 91% efficiency against about 529W at 85%, a 35W delta worth roughly $0.78/month across the gaming hours. Real across a decade of ownership, invisible on any single bill.

Zero-RPM mode

The SuperNOVA 1000 GT runs its fan in zero-RPM mode below approximately 400W (40% load). At typical gaming loads with a 7800X3D and RTX 5080, the fan spins but spins slowly — it’s one of the quieter components in the build. At idle or light workloads, the PSU is completely silent.

Zero-RPM mode does mean the PSU runs hotter at low load than a fan-always-on unit, but PSU temperature at idle load is well within the operating spec. It’s a design tradeoff that optimizes for acoustics at the cost of slightly elevated idle temperatures. For a desktop build with reasonable case airflow, it’s the right tradeoff.

Cabling: PCIe and 12VHPWR

The SuperNOVA 1000 GT ships with four 6+2 PCIe cables and a 12VHPWR adapter (the 16-pin connector introduced with NVIDIA RTX 40-series and used on RTX 50-series). The 12VHPWR adapter is a passive cable that converts two 8-pin PCIe connectors to a single 12VHPWR.

On an RTX 5080, which uses the 16-pin 12VHPWR connector directly: the adapter works, but a native 12VHPWR cable is preferable. The adapter creates an extra connection point, and NVIDIA’s own adapter guidance recommends native 12VHPWR cables where available. This is a solved problem on any PSU purchased after 2023 — new units ship with native 12VHPWR cables. The SuperNOVA 1000 GT predates this connector and uses the adapter approach.

If you run an RTX 50-series card with a SuperNOVA GT, the adapter is fine. Just route it cleanly so the cable doesn’t stress the connector. JonnyGURU’s documentation of the 12VHPWR cable fires (now archived) traced failures to bent connectors and poor cable routing, not the adapter design itself.

EPS / CPU power

The 1000 GT includes two 4+4 EPS connectors for CPU power. The Ryzen 7 7800X3D at a derived ~162W package ceiling (1.35 x AMD’s published 120W Default TDP) uses one 8-pin connector at well under 10A on the 12V rail. The second EPS cable stays unused for an AM5 build. For high-TDP Intel builds (i9-14900KS, i9-13900KS) that can draw 250–300W through the CPU power connectors, both EPS cables are used and the 1000W capacity is still appropriate.

The EVGA situation: what it means for buyers

EVGA’s GPU-market exit does not determine coverage for an individual power supply. The official PSU warranty endpoint redirected to the company’s homepage when checked on September 8, 2026, so this review cannot confirm current eligibility or service availability from that page.

For a new or used unit, record the full part number and suffix, the purchase channel, the original shipment or purchase date, and the seller’s proof of purchase. Compare those details with current EVGA terms and seek confirmation before counting on coverage. A used sale alone does not justify a blanket denial of every transferable warranty.

For any alternative PSU, make the same check. A printed warranty duration and a retailer listing do not establish that a particular seller or unit qualifies. Price the risk only after you know what the purchase includes.

What to buy instead (if warranty matters)

Current alternatives to compare at the 1000W Gold tier; verify the listed warranty term and seller eligibility before purchase:

The Corsair RM1000x (2024 revision) is a comparable fully modular, 80 Plus Gold alternative with a listed 10-year warranty. Compare its current price and seller terms with the exact EVGA offer; this review has not tested either seller’s warranty service. For how all of these rank against the wider current market — with each placement sourced to a professional test — see our PSU tier list.

Verdict

The SuperNOVA 1000 GT hardware is excellent and I’d use it again in a build where warranty coverage isn’t the deciding factor. Fully modular, quiet, efficient, right-sized for an RTX 5080 + Ryzen 7 7800X3D build, and well-built enough to outlast most of the components it powers.

Compare the asking price, condition and verified warranty eligibility. At price parity, prefer the unit whose seller and coverage you can confirm. A discount can change the choice, but this review cannot assign warranty eligibility from the brand name or a new/used label alone.

Rating: 4.3/5 — the hardware assessment stands; purchase advice depends on the exact unit’s condition, price and verified coverage.

For the full build this PSU shipped in, the ROG STRIX B650-A review covers the platform. To size a PSU for your specific build, the PSU Wattage Calculator gives you peak draw, minimum recommended size, and the efficiency sweet-spot size. To calculate how a 1000W unit affects your electricity bill vs. a 750W, the Power & Cost Calculator models PSU efficiency at real load points.