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Corsair HX1200i (2025) 1200W Platinum

Corsairno compromisecritical fields covered· 4/4 detail specs sourced
Corsair HX1200i (2025) 1200W Platinum

A no-compromise 1200W Platinum unit with native dual-color 12V-2x6, the 2025 HX1200i is built for RTX 5090-class power draw. Full modularity and Platinum efficiency back its high-wattage headroom. It's overkill for mid-range systems — an 850W unit is cheaper and plenty there — so reserve this for the most demanding single-GPU flagship builds that genuinely need the capacity.

Scores

Breakdown
Overall77±3

Caliber-forward blend — tier caliber + within-tier price rank 30%, value 25%, confidence 20%, compatibility 15%, upgrade path 10% — renormalized over applicable dimensions.

Beginner Friendliness26
Compatibility72
Confidence76
Pro Readiness95
Upgrade Path88
Value40

The ± band on the overall score reflects sourcing confidence — wider when fewer specs are verified.

How each score is computed: our scoring methodology.

Specifications

SpecValueVerification
wattage1200Sourced
efficiency80plus PlatinumSourced
modularfullSourced
pcie5 12vhpwryesSourced

4/4 detail specs sourced. Amber rows are flagged for verification — we show them as reported, not confirmed.

Verdict

Best for

  • RTX 5090-class builds — 1200W with native dual-color 12V-2x6

Who should skip this

  • Mid-range builds (850W is cheaper and plenty)

Where to buy

List price $300

Prices are a guide and can change — confirm the current price on the retailer's site before buying.

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Prices last checked Jun 14, 2026 — retailer prices change often, so click through for the current price.

Some links may be affiliate links — we may earn a commission at no extra cost to you; rankings are never influenced by it.

Standards

Form factors & standards — interchangeable across compatible builds, not a platform lock-in.

ATX (native)PCIe 5.0 (native)

Compatibility

Built around ATX, PCIe 5.0. Make sure the rest of your build uses the same platform before you buy — mismatched sockets, mounts or standards are the most common return reason. Check it in the builder →

Upgrade path

Buying today, the be quiet! Dark Power 13 1000W Titanium scores higher for less — the smarter pick in power supplies unless you specifically want this one. See it →