GPU VRAM Calculator for LLMs

Estimate GPU memory before renting hardware by accounting for model weights, quantization, context length, concurrent sequences, KV cache, and runtime overhead.

Why 7B parameters is not the full memory number

Model weights are only one part of VRAM planning. Long context windows, KV cache, batching, inference engine overhead, and attention implementation can change the GPU tier required for the same model.

Plan the GPU before checkout

Use the calculator to choose between 16 GB, 24 GB, 48 GB, 80 GB, and multi-GPU setups, then confirm live GPU inventory and pricing.

Browse live GPU marketplace Read the GPU rental guide Read the VRAM guide