Card × model benchmark
Gemma 4 12B on RTX 4070 Ti Q4_K_M
ComfortableOn an RTX 4070 Ti (12 GB), Gemma 4 12B in Q4_K_M generates 53,8 tokens/s and reads the prompt at 3 805 tokens/s, using 8,5 Go of video memory.
Median of 1 run · latest on 25/09/26
53,8 tok/s
Generation
3 805 tok/s
Prompt processing
8,5 Go
VRAM used (peak)
161 W
Average power
0,33 tok/s/W
Efficiency
0,21 €/M tok
Electricity / M tokens · 0,25 €/kWh
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What about a longer context?
An estimate, not a measurement: the KV cache grows with context, takes VRAM and slows generation down.
| Context | KV cache | Estimated VRAM | Fits in 12 GB? | Estimated speed |
|---|---|---|---|---|
| 4 096 | 0,3 Go | 8,7 Go | yes | ≈ 52,3 tok/s |
| 8 192 | 0,5 Go | 9,0 Go | yes | ≈ 50,7 tok/s |
| 16 384 | 1,0 Go | 9,5 Go | yes | ≈ 47,8 tok/s |
| 32 768 | 2,0 Go | 10,5 Go | yes | ≈ 42,8 tok/s |
| 65 536 | 4,0 Go | 12,5 Go | no | — |
| 131 072 | 8,0 Go | 16,5 Go | no | — |
KV cache per token = 2 × 8 layers × 8 KV heads × 256 × 2 bytes (f16). Estimated VRAM = measured VRAM + added KV cache. Speed ≈ measured speed × weights ÷ (weights + added KV cache) — attention compute is not modelled, the real drop is slightly larger. Fine-tune it in the “Configurator”
Other models measured on the RTX 4070 Ti
All measurements
| Date | Source | Type | Generation | Prompt | VRAM | Max temp. | Power | llama.cpp |
|---|---|---|---|---|---|---|---|---|
| 25/09/26 | SephiGame | context 32 768ASUS ROG Strix | 48,2 | 2 246 | 9,3 Go | 70 °C | 207 W | llama.cpp 96278e39f |
| 25/09/26 | SephiGame | context 16 384ASUS ROG Strix | 49,8 | 2 916 | 9,1 Go | 69 °C | 190 W | llama.cpp 96278e39f |
| 25/09/26 | SephiGame | context 8 192ASUS ROG Strix | 50,7 | 3 234 | 9,0 Go | 69 °C | 178 W | llama.cpp 96278e39f |
| 25/09/26 | SephiGame | standardASUS ROG Strix | 53,8 | 3 805 | 8,5 Go | 66 °C | 161 W | llama.cpp 96278e39f |
Protocol: llama-bench (llama.cpp), prompt 512 + generation 128 tokens, model fully loaded in VRAM. VRAM used = system peak (includes the OS, ~0.5 to 1 GB more than the model alone). Measure my card