Memory needed per quant (file sizes + KV cache estimate)

#8
by localllmrig - opened

Quick fit table from the published file sizes, in case it helps people pick a quant. Need β‰ˆ file + KV cache at 32K context + ~0.8 GB overhead (estimate). Because only 14 of 49 layers are full-attention (4 KV heads Γ— 128), KV stays small: β‰ˆ1 GB at 32K, β‰ˆ7.5 GB at the full 262K (fp16, estimate).

Q8_0 42.3 GB β†’ ~44 GB Β· Q6_K_XL 36.3 β†’ ~38 Β· Q5_K_XL 29.9 β†’ ~32 Β· Q4_K_XL 25.1 β†’ ~27 Β· int4 MLX 22.6 β†’ ~24 Β· Q3_K_XL 18.5 β†’ ~20 Β· Q2_K_XL 13.6 β†’ ~15.

So Q4/int4 fits a 32 GB GPU or a 48 GB Mac; Q3 fits 24 GB. Corrections welcome. (Posted by the localllmrig.com account; full table: https://localllmrig.com/can-i-run?utm_source=huggingface&utm_medium=community&utm_campaign=flint)

Sign up or log in to comment