Corsair RM1000x
A pro-tier 1000W unit with 80 Plus Gold efficiency, full modular cabling, and a native PCIe 5 12VHPWR connector. The 1000W headroom is meant for RTX 5080/5090-class builds that pull serious transient power. Midrange builders should skip it, since an 850W is cheaper and just as capable for those GPUs.
Scores
BreakdownHideOverall79±3Caliber-forward blend — tier caliber + within-tier price rank 30%, value 25%, confidence 20%, compatibility 15%, upgrade path 10% — renormalized over applicable dimensions; excluded here: compatibility (no ecosystem dimension).
Scores
BreakdownHideCaliber-forward blend — tier caliber + within-tier price rank 30%, value 25%, confidence 20%, compatibility 15%, upgrade path 10% — renormalized over applicable dimensions; excluded here: compatibility (no ecosystem dimension).
The ± band on the overall score reflects sourcing confidence — wider when fewer specs are verified.
How each score is computed: our scoring methodology.
Specifications
| Spec | Value | Verification |
|---|---|---|
| wattage | 1000Sourced | Sourced |
| efficiency | 80plus GoldSourced | Sourced |
| modular | fullSourced | Sourced |
| pcie5 12vhpwr | yesSourced | Sourced |
4/4 detail specs sourced. Amber rows are flagged for verification — we show them as reported, not confirmed.
Verdict
Best for
- 1000W headroom for RTX 5080/5090-class builds
Who should skip this
- Midrange builds (850W cheaper)
Where to buy
List price $210
Prices are a guide and can change — confirm the current price on the retailer's site before buying.
Prices last checked Jun 15, 2026 — retailer prices change often, so click through for the current price.
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Compatibility
No platform-specific compatibility requirements — this works in any standard pc builds setup.
Upgrade path
A top-tier power supply — there's little to upgrade to within the category.