ComfyUI Node & VRAM Engineering
ComfyUI Workflow VRAM Calculator
Calculate required GPU VRAM for SD 1.5, SDXL and Flux.1 ComfyUI pipelines, including ControlNet and IP-Adapter overhead.
Required VRAM Footprint
12.0 GB
Recommended GPU
RTX 3060 / 12GB VRAM
How to read these numbers
These are planning estimates derived from published model weight sizes and the way activation memory scales with resolution and batch size. They are not measurements, and they will not match a specific machine exactly: driver overhead, other applications holding the card, the attention implementation in use and the precision your weights are stored at all move the real figure. Use the output to decide which VRAM tier you are in, then confirm against your own console.
Where the inputs come from
- ComfyUI GPU requirements — the published weight sizes behind the checkpoint options above.
- How ComfyUI graphs execute — why the decode step often peaks higher than sampling.
- ComfyUI out of memory errors — what to change when the estimate says it should fit and it does not.