How Much VRAM Do I Need for LLM Training and Inference?
A practical engineer's guide to VRAM for LLM training, fine-tuning, and inference. Learn how to estimate VRAM for 7B and 70B...
2026-10-25 Read guideCalculators
Estimate the monthly cost of renting GPUs by the hour (on-demand vs spot), including storage and egress assumptions.
Everything about renting cloud GPUs, affiliate tracking and how we collect pricing data.
It multiplies the hourly rate we collected by your expected running hours and adds storage and egress at the stated assumptions. It is a budgeting tool, not a quote: real invoices include taxes, idle time and any minimum billing increments the provider applies.
It computes weight memory from parameter count and precision, KV cache from the attention geometry (2 x layers x KV heads x head dimension x context x batch, in FP16), and adds 15 percent of the weights for activations and framework overhead.
Real usage depends on the serving framework, whether KV cache is paged or preallocated, CUDA graph capture, and how aggressively the engine reserves memory. Treat the number as a sizing guide and leave headroom.
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