NVIDIA · 8 GB GDDR6 · 448 GB/s bandwidth ·
Google · 11.95B · model ctx up to 256K
No — gemma-4-12b-it at Q4 needs ≈ 8.77 GB even at 4K context, beyond the RTX 3070 8GB's 8 GB GDDR6. It would only run with heavy CPU/disk offload. Decode at Q4/8K: ≈ 44.0 tok/s (estimated, batch 1). FP16 needs ≈ 27.29 GB — does not fit on this card. Estimates come from memory-bandwidth math; rows tagged measured override estimates. Relative ranking is more reliable than absolute tok/s. Methodology.
Fit & speed by quant and context
Quant
Context
VRAM needed
Fits?
tok/s (decode)
Q4
4K
8.77 GB
No
56.7est.
Q4
8K default
9.96 GB
No
44.0est.
Q4
32K
17.13 GB
No
14.9est.
FP16
4K
26.09 GB
No
1.8est.
FP16
8K default
27.29 GB
No
1.6est.
FP16
32K
34.46 GB
No
—
Fits = weights + KV(ctx) + 1 GB overhead ≤ 95% of VRAM. Measured
anchors are context-agnostic; the fit verdict is recomputed per context. A missing tok/s
means the model is far beyond this card (offload-only territory).