Can I Run Bonsai 27B on NVIDIA GeForce RTX 4070 Ti?
Written by Jakub Rusinowski · Last updated September 29, 2026
Yes, comfortably — Ternary Bonsai 27B at Ternary (1.58-bit, ~1.71 bpw) needs 8.3 GB at 8K context (5.8 GB weights + 2.5 GB KV cache/overhead), leaving ~3.7 GB of the NVIDIA GeForce RTX 4070 Ti's 12 GB, at ~61 tok/s (est.), with room for up to 16K context.
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NVIDIA GeForce RTX 4070 Ti Specs
| VRAM | 12 GB |
| Memory Bandwidth | 504 GB/s |
Ternary Bonsai 27B on the NVIDIA GeForce RTX 4070 Ti: VRAM by quantization
| Quant | VRAM needed | Fits 12 GB? | Max context | Whole PC |
|---|---|---|---|---|
| Ternary (1.58-bit, ~1.71 bpw) | 8.3 GB | ✓ Yes | 16K | — |
Assumes an 8K-token context with an f16 KV cache, on an estimated architecture — this model publishes no config we can read. A longer window needs more; a quantized KV cache needs less. “Max context” is the largest window that still fits in 12 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 Ternary (1.58-bit, ~1.71 bpw) on the NVIDIA GeForce RTX 4070 Ti: 8K 8.3 GB · 32K 13.6 GB ✗ · 128K 34.5 GB ✗. Past 32K it no longer fits 12 GB — a q8_0 KV cache buys roughly half of that back, which the calculator will price for you.
No compatible GPU? Bonsai 27B on 16 GB of system RAM, CPU only: runs comfortably.
Bonsai 27B Sizes That Fit the NVIDIA GeForce RTX 4070 Ti (at 8K context)
| Ternary Bonsai 27B | Ternary (1.58-bit, ~1.71 bpw) · 8.3 GB at 8K context · ~61 tok/s (est.) |
| 1-bit Bonsai 27B | 1-bit (binary, ~1.125 bpw) · 6.3 GB at 8K context · ~82 tok/s (est.) |
At 2 hrs/day, buying (~$799) beats renting at $0.34/hr after about 3.3 years.
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FAQ
Bonsai 27B on the NVIDIA GeForce RTX 4070 Ti — does it fit?
Yes, comfortably — Ternary Bonsai 27B at Ternary (1.58-bit, ~1.71 bpw) needs 8.3 GB at 8K context (5.8 GB weights + 2.5 GB KV cache/overhead), leaving ~3.7 GB of the NVIDIA GeForce RTX 4070 Ti's 12 GB, at ~61 tok/s (est.), with room for up to 16K context.
Which Bonsai 27B variant fits best on the NVIDIA GeForce RTX 4070 Ti?
Ternary Bonsai 27B at Ternary (1.58-bit, ~1.71 bpw) quantization needs 8.3 GB at 8K context (5.8 GB weights + 2.5 GB KV cache/overhead), estimated ~61 tokens/sec, up to 16K context.
Every Bonsai 27B size on the NVIDIA GeForce RTX 4070 Ti
| Size | VRAM at 8K | Verdict | Speed |
|---|---|---|---|
| Ternary Bonsai 27B | 8.3 GB | Runs | ~61 tok/s |
| 1-bit Bonsai 27B | 6.3 GB | Runs | ~82 tok/s |
Bonsai 27B on Other GPUs
- Bonsai 27B on NVIDIA GeForce RTX 5070
- Bonsai 27B on NVIDIA GeForce RTX 4070 Super
- Bonsai 27B on NVIDIA GeForce RTX 4070
- Bonsai 27B on NVIDIA GeForce RTX 3060 (12GB)
- Bonsai 27B on Intel Arc B580
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