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Corsair 4000D Airflow

Corsairbeginnercritical fields covered· 4/4 detail specs sourced
Corsair 4000D Airflow

A long-recommended starter ATX case, the 4000D Airflow is a mesh-front mid-tower fitting ATX/mATX/ITX with 360mm of GPU room and up to 360mm radiator support. Its no-frills, do-everything reputation makes it a safe, proven foundation for a first build. If you're planning triple-radiator water cooling, look to a roomier chassis.

Scores

Breakdown
Overall62±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 Friendliness81
Compatibility60
Confidence82
Pro Readiness45
Upgrade Path59
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
form factor supportATX, Micro-ATX, itxSourced
max GPU length (mm)360Sourced
max cooler height (mm)170Sourced
radiator support (mm)120, 240, 280, 360Sourced

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

Verdict

Best for

  • The most-recommended starter ATX case of its era

Who should skip this

  • Triple-radiator builds

Where to buy

List price $124

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 13, 2026 — retailer prices change often, so click through for the current price.

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Standards

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

ATX (native)

Compatibility

Built around ATX. 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 Montech Air 903 Max scores higher for less — the smarter pick in cases unless you specifically want this one. See it →