COMPARE / RTX 4090 VS RTX 5090
RTX 4090 vs RTX 5090
Specs from the chip makers' datasheets; prices from the live Compute Cafe panel, refreshed hourly. Every rate is an on-demand published price with a source receipt.
CHEAPEST RTX 4090
$0.090/hr
SpotGPUs · median $0.48 · 38 providers
CHEAPEST RTX 5090
$0.190/hr
SpotGPUs · median $0.70 · 26 providers
CHEAPER RIGHT NOW
RTX 4090
live panel, 2026-09-27
| RTX 4090 | RTX 5090 | |
|---|---|---|
| MAKER | NVIDIA | NVIDIA |
| ARCHITECTURE | Ada Lovelace | Blackwell |
| LAUNCHED | 2022 | 2025 |
| MEMORY | 24 GB GDDR6X | 32 GB GDDR7 |
| MEMORY BANDWIDTH | 1.0 TB/s | 1.79 TB/s |
| TENSOR COMPUTE | 330 TFLOPS FP16 tensor dense (660 sparse); FP8 supported | Blackwell tensor cores with FP4; ~3,352 AI TOPS (FP4 sparse) |
| POWER DRAW | 450 W | 575 W |
| INTERCONNECT | PCIe 4.0 x16 | PCIe 5.0 x16 |
HOW TO CHOOSE
RTX 4090 vs RTX 5090
The 5090 adds 8 GB of much faster GDDR7 and Blackwell tensor cores. Where it rents near 4090 prices, take it; it usually does not yet.
RTX 5090 vs RTX 4090
5090: 32 GB vs 24 GB, 1.79 vs 1.0 TB/s, newer tensor cores. The 4090 counters on price and availability - the panel spread decides.
Workload fit
RTX 4090: small-model inference, fine-tuning 7b-13b, image generation. RTX 5090: small-model inference, fine-tuning, fp4 experimentation.
RTX 4090 VS RTX 5090 - FAQ
Which is cheaper to rent, RTX 4090 or RTX 5090?
By today's published on-demand rates: RTX 4090 starts at $0.090/GPU/hr (median $0.48, 38 providers) and RTX 5090 starts at $0.190/GPU/hr (median $0.70, 26 providers). The cheapest live listing is the RTX 4090 at SpotGPUs. Figures recompute from the panel on every refresh.
RTX 4090 or RTX 5090 - which should I rent?
RTX 4090: The RTX 4090 is the consumer card that built the budget GPU-cloud market: L40S-class FP16 throughput at a fraction of the price, limited by 24 GB of memory, no ECC, and no datacenter software features. RTX 5090: The RTX 5090 is the consumer Blackwell flagship: 32 GB of fast GDDR7 (1.79 TB/s), FP4/FP8 tensor support, and roughly 4090-plus-30% real-world AI throughput. The side-by-side spec table and live price rows above give the full picture.
Where can I rent RTX 4090 and RTX 5090?
38 providers publish RTX 4090 rates and 26 publish RTX 5090 rates on Compute Cafe. Every row links to the provider's own published price - committed-use and reserved rates are excluded.
Full pricing: RTX 4090 · RTX 5090 · all comparisons