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RTX 4060 8GB vs RTX 4080 Super 16GB for Local LLMs

The RTX 4080 Super 16GB has about 171% more memory bandwidth (736 vs 272 GB/s). Batch-1 decode tracks bandwidth closely, so a model that fits both cards should decode roughly 171% faster on the RTX 4080 Super 16GB. The RTX 4080 Super 16GB fits more of the catalog at Q4/8K — 25 vs 17 of 61 models (16 vs 8 GB VRAM). Largest model that fits the RTX 4080 Super 16GB but not the RTX 4060 8GB: gpt-oss-20b (21.5B). MSRP is $299 for the RTX 4060 8GB vs $999 for the RTX 4080 Super 16GB. MSRP is a launch list price, not live retail — Amazon prices move; click through for the current price. In the Q4/8K head-to-head below (38 shared models), the RTX 4080 Super 16GB posts the higher tok/s in 38 rows vs 0. Methodology.

Spec comparison

RTX 4060 8GBRTX 4080 Super 16GB
VendorNVIDIANVIDIA
VRAM8 GB16 GB
Memory typeGDDR6GDDR6X
Memory bandwidth272 GB/s736 GB/s
TDP115 W320 W
MSRP (list)$299$999
BuySearch Amazon (affiliate)ASUS ProArt GeForce RTX 4080 Super OC (affiliate) · More listings

MSRP is the launch list price, not live retail. Buy links are Amazon affiliate links — the price after you click is the live price.

Q4 / 8K head-to-head — top 15 of 38 shared models

ModelParams (B)RTX 4060 8GB tok/sRTX 4060 8GB fitsRTX 4080 Super 16GB tok/sRTX 4080 Super 16GB fitsWinner
Qwen3-0.6B0.8216.4 est.Yes585.5 est.YesRTX 4080 Super 16GB
gemma-3-1b-it1.0173.1 est.Yes468.4 est.YesRTX 4080 Super 16GB
Llama-3.2-1B-Instruct1.2144.2 est.Yes390.3 est.YesRTX 4080 Super 16GB
Qwen3-30B-A3B30.531.2 est.No338.0 est.NoRTX 4080 Super 16GB
Qwen3-Coder-30B-A3B-Instruct30.531.2 est.No338.0 est.NoRTX 4080 Super 16GB
Qwen3-30B-A3B-Instruct-250730.531.2 est.No338.0 est.NoRTX 4080 Super 16GB
GLM-4.7-Flash31.230.0 est.No324.5 est.NoRTX 4080 Super 16GB
Qwen3-1.7B2.086.5 est.Yes234.2 est.YesRTX 4080 Super 16GB
gpt-oss-20b21.547.9 est.No186.5 measuredYesRTX 4080 Super 16GB
Llama-3.2-3B-Instruct3.254.1 est.Yes146.4 est.YesRTX 4080 Super 16GB
Phi-4-mini-instruct3.845.6 est.Yes123.3 est.YesRTX 4080 Super 16GB
Phi-4-mini-reasoning3.845.6 est.Yes123.3 est.YesRTX 4080 Super 16GB
gemma-3-4b-it4.344.4 est.Yes120.1 est.YesRTX 4080 Super 16GB
Qwen3-4B-Instruct-25074.043.3 est.Yes117.1 est.YesRTX 4080 Super 16GB
Qwen3-4B-Thinking-25074.043.3 est.Yes117.1 est.YesRTX 4080 Super 16GB

est. = bandwidth-based estimate; measured = curated real benchmark that overrides the estimate. Fits = weights + KV(8K) + 1 GB overhead ≤ 95% of VRAM.

Fit coverage at Q4 / 8K

RTX 4060 8GBRTX 4080 Super 16GB
Catalog models that fit17 of 6125 of 61
Largest exclusive fit—gpt-oss-20b (21.5B)

RTX 4060 8GB details → · RTX 4080 Super 16GB details →