RTX 4090 vs RTX 5090 — Next-Gen Upgrade?
Ada Lovelace vs Blackwell. Is the RTX 5090 worth 2x the price for local LLM inference?
RTX 4090 (24GB)RTX 5090 (32GB)
Feature Comparison
| Feature | RTX 4090 (24GB) | RTX 5090 (32GB) |
|---|---|---|
| VRAM | 24 GB | 32 GB |
| Memory Bandwidth | 1008 GB/s | ~1,800 GB/s |
| Architecture | Ada Lovelace | Blackwell |
| Llama 3.3 70B Q4 | ❌ Not a fit (VRAM estimate) | ✅ Fits (VRAM estimate) |
| Mistral 8x22B Q4 | ❌ Not a fit (VRAM estimate) | ⚠️ Near the limit (VRAM estimate) |
| DeepSeek V3 671B Q4 | ❌ Not a fit (VRAM estimate) | ❌ Not a fit (VRAM estimate) |
| Price (new) | Retail prices vary — check current listings | Retail prices vary — check current listings |
Looking for the right GPU?
RTX 4090 (24GB)
Calculate →Consumer or data-center GPU for local LLM inference. Use our VRAM calculator to check model fit.
RTX 5090 (32GB)
Calculate →Consumer or data-center GPU for local LLM inference. Use our VRAM calculator to check model fit.
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