Positioning gap between the two GPUs
The RTX 5090, launched in early 2025, is the new flagship: 32 GB GDDR7 VRAM, memory bandwidth ≈1.8 TB/s — single-card capable of running full-parameter Flux and larger local models. The RTX 4090 is the prior-gen flagship: 24 GB GDDR6X, with the most mature ecosystem and supply, plus maximum rental term flexibility. New GPUs launch with limited supply and higher unit pricing, which gradually declines as platform availability increases — historical data for both series is archived at /market.
Don’t focus solely on hourly rates
For tasks like image generation and inference, actual cost equals ‘hourly rental × task duration’: a single 5090 completes the same task faster, shortening total runtime—so the higher hourly rate may be offset by speed gains. Conversely, tasks exceeding 24GB VRAM capacity simply won’t run on an RTX 4090. First select GPU by VRAM, then compare prices.
Methodology
The table above shows all publicly listed prices fetched by our site every 45 minutes; the median reflects the median of all live quotes. Spot/preemptible and off-peak tiers may be lower but carry interruption risk. Always refer to the platform’s order page for final pricing.
rentgpu.link