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LLM Memory and Hardware Planner

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Calculate memory components, context and headroom separately. A sufficient budget establishes neither backend support nor speed.

Calculation and file import run in the browser. These tools do not transmit inputs. Existing website measurement records tool identity and button labels.

Defaults are freely chosen examples. Results are planning estimates.

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Sources and limits

Weights = total parameters × effective bits / 8. Dense KV cache = layers × KV heads × head dimension × tokens × sequences × (K bytes + V bytes). Artifact size is not guaranteed runtime usage. Quantized caches, sliding windows, hybrid and recurrent architectures require suitable models or a measured manual budget. Card profiles show manufacturer GB; the GiB budget is an editable planning assumption and should come from the runtime. Multiple cards are not added together.

Documentation checked: 05 October 2026. Hardware profiles: manufacturer specifications and editable memory budgets.

Questions and answers

What limits apply to the result?

Weights = total parameters × effective bits / 8. Dense KV cache = layers × KV heads × head dimension × tokens × sequences × (K bytes + V bytes). Artifact size is not guaranteed runtime usage. Quantized caches, sliding windows, hybrid and recurrent architectures require suitable models or a measured manual budget. Card profiles show manufacturer GB; the GiB budget is an editable planning assumption and should come from the runtime. Multiple cards are not added together.

How are inputs processed?

Calculation and file import run in the browser. These tools do not transmit inputs. Existing website measurement records tool identity and button labels.

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