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RTX 5080 16GB vs RX 7600 8GB for Local LLMs

The RTX 5080 16GB has about 233% more memory bandwidth (960 vs 288 GB/s). Batch-1 decode tracks bandwidth closely, so a model that fits both cards should decode roughly 233% faster on the RTX 5080 16GB. The RTX 5080 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 5080 16GB but not the RX 7600 8GB: gpt-oss-20b (21.5B). MSRP is $999 for the RTX 5080 16GB vs $269 for the RX 7600 8GB. 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 5080 16GB posts the higher tok/s in 38 rows vs 0. Methodology.

Spec comparison

RTX 5080 16GBRX 7600 8GB
VendorNVIDIAAMD
VRAM16 GB8 GB
Memory typeGDDR7GDDR6
Memory bandwidth960 GB/s288 GB/s
TDP360 W165 W
MSRP (list)$999$269
BuyNVIDIA GeForce RTX 5080 Founders Edition (affiliate) · More listingsSearch Amazon (affiliate)

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 5080 16GB tok/sRTX 5080 16GB fitsRX 7600 8GB tok/sRX 7600 8GB fitsWinner
Qwen3-0.6B0.8763.6 est.Yes229.1 est.YesRTX 5080 16GB
gemma-3-1b-it1.0610.9 est.Yes183.3 est.YesRTX 5080 16GB
Llama-3.2-1B-Instruct1.2509.1 est.Yes152.7 est.YesRTX 5080 16GB
Qwen3-30B-A3B30.5440.9 est.No33.1 est.NoRTX 5080 16GB
Qwen3-Coder-30B-A3B-Instruct30.5440.9 est.No33.1 est.NoRTX 5080 16GB
Qwen3-30B-A3B-Instruct-250730.5440.9 est.No33.1 est.NoRTX 5080 16GB
GLM-4.7-Flash31.2423.2 est.No31.7 est.NoRTX 5080 16GB
Qwen3-1.7B2.0305.5 est.Yes91.6 est.YesRTX 5080 16GB
gpt-oss-20b21.5204.9 measuredYes50.7 est.NoRTX 5080 16GB
Llama-3.2-3B-Instruct3.2190.9 est.Yes48.5 measuredYesRTX 5080 16GB
Mistral-7B-Instruct-v0.37.2163.6 measuredYes25.5 est.YesRTX 5080 16GB
Phi-4-mini-instruct3.8160.8 est.Yes48.2 est.YesRTX 5080 16GB
Phi-4-mini-reasoning3.8160.8 est.Yes48.2 est.YesRTX 5080 16GB
gemma-3-4b-it4.3156.6 est.Yes47.0 est.YesRTX 5080 16GB
Qwen3-4B-Instruct-25074.0152.7 est.Yes45.8 est.YesRTX 5080 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 5080 16GBRX 7600 8GB
Catalog models that fit25 of 6117 of 61
Largest exclusive fitgpt-oss-20b (21.5B)—

RTX 5080 16GB details → · RX 7600 8GB details →