Can I Run OLMo 2 on AMD Radeon RX 7900 XT?
Written by Jakub Rusinowski · Last updated July 12, 2026
Yes, comfortably — OLMo 2 13B Instruct at Q4_K_M needs 15.8 GB at 8K context (8.3 GB weights + 7.5 GB KV cache/overhead), leaving ~4.2 GB of the AMD Radeon RX 7900 XT's 20 GB, at ~39 tok/s (est.), with room for up to 4K context.
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AMD Radeon RX 7900 XT Specs
| VRAM | 20 GB |
| Memory Bandwidth | 800 GB/s |
OLMo 2 13B Instruct on the AMD Radeon RX 7900 XT: VRAM by quantization
| Quant | VRAM needed | Fits 20 GB? | Max context | Whole PC |
|---|---|---|---|---|
| F16 | 34.9 GB | ✗ No | — | — |
| Q8_0 | 22.1 GB | ✗ No | — | — |
| Q6_K | 18.7 GB | ✓ Yes | 4K | — |
| Q5_K_M | 17.2 GB | ✓ Yes | 4K | — |
| Q4_K_M | 15.8 GB | ✓ Yes | 4K | — |
| Q3_K_M | 13.4 GB | ✓ Yes | 4K | — |
| Q2_K | 12 GB | ✓ Yes | 4K | — |
Assumes an 8K-token context with an f16 KV cache. A longer window needs more; a quantized KV cache needs less. “Max context” is the largest window that still fits in 20 GB. Figures are estimates from parameter count, quantization and memory bandwidth — the analyzer lets you tune KV-cache quant and context.
No compatible GPU? OLMo 2 13B Instruct on 24 GB of system RAM, CPU only: runs.
OLMo 2 Sizes That Fit the AMD Radeon RX 7900 XT (at 8K context)
| OLMo 2 13B Instruct | Q4_K_M · 15.8 GB at 8K context · ~39 tok/s (est.) |
| OLMo 2 7B Instruct | Q4_K_M · 9.5 GB at 8K context · ~62 tok/s (est.) |
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FAQ
OLMo 2 on the AMD Radeon RX 7900 XT — does it fit?
Yes, comfortably — OLMo 2 13B Instruct at Q4_K_M needs 15.8 GB at 8K context (8.3 GB weights + 7.5 GB KV cache/overhead), leaving ~4.2 GB of the AMD Radeon RX 7900 XT's 20 GB, at ~39 tok/s (est.), with room for up to 4K context.
Which OLMo 2 variant fits best on the AMD Radeon RX 7900 XT?
OLMo 2 13B Instruct at Q4_K_M quantization needs 15.8 GB at 8K context (8.3 GB weights + 7.5 GB KV cache/overhead), estimated ~39 tokens/sec, up to 4K context.
Every OLMo 2 size on the AMD Radeon RX 7900 XT
| Size | VRAM at 8K | Verdict | Speed |
|---|---|---|---|
| OLMo 2 13B Instruct | 15.8 GB | Runs | ~39 tok/s |
| OLMo 2 7B Instruct | 9.5 GB | Runs | ~62 tok/s |
OLMo 2 on Other GPUs
- OLMo 2 on NVIDIA GeForce RTX 5080
- OLMo 2 on NVIDIA GeForce RTX 5070 Ti
- OLMo 2 on NVIDIA GeForce RTX 5060 Ti 16GB
- OLMo 2 on NVIDIA GeForce RTX 4080 Super
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VRAM Tier
Troubleshooting
Buying Guide
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