GPUs / NVIDIA

RTX 4070 SUPER

Memory
GDDR6X
Bus
192-bit
Published peak
504 GB/s
Capacity
12 GB

Measured

Read
472.2GB/s
Write
453.5GB/s
Copy
427.2GB/s
Random
63.6GB/s
Latency
241ns
Sustain
426.6GB/s

Medians of 4 verified runs from 2 operators. Read reaches 94 % of the published peak.

79.74 verified runs, median 81.281.3

Local AI speed

ModelParameters4-bit, tokens/s8-bit, tokens/s
Llama 3.1 8B8.03B≤ 118≤ 59
Qwen 2.5 14B14.7B≤ 64Does not fit
gpt-oss-20b21B, 3.6B active≤ 262Does not fit
Mistral Small 24B24B≤ 39Does not fit
Qwen 2.5 32B32.5BDoes not fitDoes not fit
Llama 3.3 70B70.6BDoes not fitDoes not fit
gpt-oss-120b117B, 5.1B activeDoes not fitDoes not fit
Upper bounds: median read ÷ bytes read per token. Mixture-of-experts models read only their active experts. Fit checks weights against the 12 GB configuration; the KV cache needs room on top.

Top operators

#OperatorScoreReadDate
1OP-2B415B81.3481.9 GB/s2026-09-27
2OP-338F2A79.7439.6 GB/s2026-09-27

Full RTX 4070 SUPER leaderboard