Can I Run Ternary Bonsai 27B on NVIDIA GeForce RTX 4070 Super?
Written by Jakub Rusinowski · Last updated September 29, 2026
Yes. Ternary Bonsai 27B needs 8.3 GB at 8K context (5.8 GB weights + 2.5 GB KV cache/overhead) at Ternary (1.58-bit, ~1.71 bpw) and the NVIDIA GeForce RTX 4070 Super has 12 GB, leaving about 3.7 GB of headroom, at roughly 61 tok/s (estimated) with room for up to 16K of context.
See what else this hardware can run →
The numbers
| Model | Ternary Bonsai 27B |
| Parameters | 27B |
| Quantization | Ternary (1.58-bit, ~1.71 bpw) |
| VRAM needed (8K context) | 8.3 GB |
| NVIDIA GeForce RTX 4070 Super VRAM | 12 GB |
| Verdict | Runs |
| Max context | 16K |
| Estimated speed | ~61 tok/s |
Ternary Bonsai 27B on the NVIDIA GeForce RTX 4070 Super: 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 Super: 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.
What to do next
Nothing to change — run it at Ternary (1.58-bit, ~1.71 bpw). If you want more capability, check whether the next size up also fits.
No compatible GPU? Bonsai 27B on 16 GB of system RAM, CPU only: runs comfortably.
Running Ternary Bonsai 27B on this card:
At 2 hrs/day, buying (~$599) beats renting at $0.34/hr after about 2.4 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 Bonsai 27B sizes on the NVIDIA GeForce RTX 4070 Super
- 1-bit Bonsai 27B — runs (6.3 GB)
Ternary Bonsai 27B on nearby hardware
- Intel Arc B570 (10 GB) — runs
All Bonsai 27B sizes on the NVIDIA GeForce RTX 4070 Super | Ternary Bonsai 27B model page | NVIDIA GeForce RTX 4070 Super GPU page | VRAM calculator | Check your hardware