Can I Run Yi 1.5 34B Chat on AMD Radeon RX 7900 XTX?
Autor: Jakub Rusinowski · Ostatnia aktualizacja: 12 lipca 2026
Yes, but it's tight. Yi 1.5 34B Chat needs 23.6 GB at 8K context (20.8 GB weights + 2.8 GB KV cache/overhead) at Q4_K_M and the AMD Radeon RX 7900 XTX has 24 GB, leaving about 0.4 GB of headroom, at roughly 26 tok/s (estimated) with room for up to 8K of context.
See what else this hardware can run →
The numbers
| Model | Yi 1.5 34B Chat |
| Parameters | 34B |
| Quantization | Q4_K_M |
| VRAM needed (8K context) | 23.6 GB |
| AMD Radeon RX 7900 XTX VRAM | 24 GB |
| Verdict | Runs |
| Max context | 8K |
| Estimated speed | ~26 tok/s |
Yi 1.5 34B Chat on the AMD Radeon RX 7900 XTX: VRAM by quantization
| Quant | VRAM needed | Fits 24 GB? | Max context | Whole PC |
|---|---|---|---|---|
| F16 | 71.6 GB | ✗ No | — | — |
| Q8_0 | 39.4 GB | ✗ No | — | — |
| Q6_K | 31 GB | ✗ No | — | — |
| Q5_K_M | 27.2 GB | ✗ No | — | — |
| Q4_K_M | 23.6 GB | ✓ Yes | 8K | — |
| Q3_K_M | 17.5 GB | ✓ Yes | 16K | — |
| Q2_K | 14.1 GB | ✓ Yes | 16K | — |
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 24 GB. Figures are estimates from parameter count, quantization and memory bandwidth — the analyzer lets you tune KV-cache quant and context.
Context costs VRAM too. At Q4_K_M on the AMD Radeon RX 7900 XTX: 8K 23.6 GB · 31K 29.4 GB ✗. Past 31K it no longer fits 24 GB — a q8_0 KV cache buys roughly half of that back, which the calculator will price for you.
What to do next
Nothing to change — run it at Q4_K_M. If you want more capability, check whether the next size up also fits.
No compatible GPU? Yi 1.5 34B Chat on 32 GB of system RAM, CPU only: runs comfortably.
Running Yi 1.5 34B Chat on this card:
At 2 hrs/day, buying (~$999) beats renting at $0.34/hr after about 4.1 years.
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Cloud rates verified 2026-07 — estimates, and marketplace prices vary. Buying price is GPU MSRP only, not a full PC.
Other Yi 1.5 Family sizes on the AMD Radeon RX 7900 XTX
- Yi 1.5 9B Chat — runs (6.9 GB)
Yi 1.5 34B Chat on nearby hardware
- Intel Arc B580 (12 GB) — does not fit
- NVIDIA GeForce RTX 5090 (32 GB) — runs
All Yi 1.5 Family sizes on the AMD Radeon RX 7900 XTX | Yi 1.5 34B Chat model page | AMD Radeon RX 7900 XTX GPU page | VRAM calculator | Check your hardware