RTX 3060 12GB vs RTX 4060 Ti 16GB
The RTX 4060 Ti 16GB holds 15 models from our catalog that the RTX 3060 12GB cannot fit at Q4_K_M, and decodes about 20% slower on memory bandwidth (288 GB/s against 360 GB/s). Decode speed on a memory-bound workload scales with bandwidth, so that ratio is the number that matters once the model fits at all.
Specs side by side
| Spec | RTX 3060 12GB | RTX 4060 Ti 16GB |
|---|---|---|
| VRAM | 12 GB | 16 GB |
| Memory bandwidth | 360 GB/s | 288 GB/s |
| TDP | 170 W | 165 W |
| Models that fit (Q4_K_M) | 359 of 506 | 374 of 506 |
What the extra VRAM actually buys
15 models in our catalog fit on the RTX 4060 Ti 16GB at Q4_K_M but not on the RTX 3060 12GB. The largest of them:
Mistral Small 24B (3.1) InstructMistral Small 24B (3.2) InstructDevstral Small 24B InstructMagistral Small 24B InstructMistral Small 24B (3) InstructCodestral 22B v0.1
Largest model each can run
At Q4_K_M the biggest fit in our catalog is DeepSeek Coder V2 Lite 16B (2.4B active) (10.1 GB) on the RTX 3060 12GB, and Mistral Small 24B (3.1) Instruct (15.0 GB) on the RTX 4060 Ti 16GB. Both figures are weights plus runtime overhead; KV cache for your context is extra.
Power and running cost
At 8 hours a day the RTX 3060 12GB draws about 41 kWh a month against 40 kWh for the RTX 4060 Ti 16GB — a difference of 1 kWh. Multiply by your own tariff; we do not assume one. Board TDP is the rated figure, not measured draw.
FAQ
RTX 3060 12GB vs RTX 4060 Ti 16GB: which should I buy for local AI?
The RTX 4060 Ti 16GB fits 374 of the 506 models in our catalog at Q4_K_M against 359 for the RTX 3060 12GB, and has about 0.8× the memory bandwidth, which is what sets decode speed once a model fits. If the models you run already fit the RTX 3060 12GB, the extra spend buys context length and speed, not a new model tier.
Is the RTX 4060 Ti 16GB faster than the RTX 3060 12GB?
No — despite the larger VRAM it has lower memory bandwidth (288 GB/s against 360 GB/s), so on memory-bound decoding it is roughly 20% slower. It holds bigger models; it does not run them faster. This is an upper bound from bandwidth alone, not a measured benchmark.
How much more VRAM does the RTX 4060 Ti 16GB have?
4 GB more (16 GB vs 12 GB). That difference lets it hold 15 additional models from our catalog at Q4_K_M.
Need a third card in the mix? The interactive compare tool lines up any three. To size KV cache for your context length, use the GPU Memory Calculator.
Related matchups
Other head-to-heads involving these cards:
RTX 4060 Ti 16GB vs RTX 4070 Ti SUPERRTX 4060 Ti 16GB vs RTX 3090
New to sizing? What VRAM is and why bandwidth sets decode speed cover the basics, and quantization explains the formats in the table above. Common mistakes when sizing VRAM lists the traps.