I ran the math on renting a cloud GPU vs buying an RTX 5090 — the answer surprised me

renting looks cheap by the hour. buying looks expensive by the receipt. only one of those numbers is honest

Aliteq

Ledger · Payments & Deals Editor

The short version

RunPod: about $0.69/hr on-demand for an RTX 5090 (22 September 2026).

The short version

Vast.ai: RTX 5090 spot rentals run roughly $0.40–$0.61/hr depending on host and interruption risk.

The short version

Buying: RTX 5090 new street price is around $4,899 (mid-Sep 2026 median), used ~$3,822, against a $1,999 launch MSRP — a shortage has pushed prices up, not down.

The short version

Breakeven at RunPod's on-demand rate against that street price: about 7,100 hours — roughly 296 days of nonstop, 24/7 use.

The short version

CoreWeave, the enterprise tier, charges about $6.16 per GPU-hour for H100s — but only in 8-GPU node bundles, a completely different market from consumer rental.

Rent first, buy only if you'll actually run it nonstop

For anyone still figuring out what they need a GPU for, renting is the correct starting point — it costs almost nothing to test the workload before committing thousands of dollars to hardware that…

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I ran the math on renting a cloud GPU vs buying an RTX 5090 — the answer surprised me

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