On an RTX 4070 Ti (12 GB), LFM2.5 2.6B in Q4_K_M needs about 3,1 Go of video memory: it should fit. Estimated generation speed: ≈ 205 tokens/s.
Not measured yet: the figures below are estimates, computed from the models already measured on this card. Measure my card
≈ 205 tok/s
Generation (estimated)
≥ 3,1 Go
Recommended VRAM (12 GB avail.)
≈ 104 W
Power (ref. model)
0,04 €/M tok
Electricity / M tokens · 0,25 €/kWh
Calculation: Gemma 2 2B measured at 202 tok/s on this card, 1,6 Go read per token → × 1,6 Go ÷ 1,6 Go ≈ 205 tok/s (generation is memory-bound: speed follows the amount of weights read).
What about a longer context?
Context
KV cache
Estimated VRAM
Fits in 12 GB?
Estimated speed
4 096
0,1 Go
2,1 Go
yes
≈ 199 tok/s
8 192
0,1 Go
2,2 Go
yes
≈ 191 tok/s
16 384
0,3 Go
2,3 Go
yes
≈ 178 tok/s
32 768
0,5 Go
2,6 Go
yes
≈ 156 tok/s
65 536
1,0 Go
3,1 Go
yes
≈ 126 tok/s
131 072
2,0 Go
4,1 Go
yes
≈ 90,5 tok/s
Estimated VRAM = file + KV cache (full-attention layers, f16) + ~0,5 Go of buffers, excluding memory used by the system — hence the slightly higher “recommended VRAM”, which keeps that margin. Speed ≈ estimated speed × weights read ÷ (weights read + added KV cache).
Estimates based on real measurements of other models on this card and on the model's public data (Petits modèles). As soon as a measurement exists, this page shows the real figures.