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RTX 5090 32GB vs RX 7600 8GB for Local LLMs

The RTX 5090 32GB has about 522% more memory bandwidth (1,792 vs 288 GB/s). Batch-1 decode tracks bandwidth closely, so a model that fits both cards should decode roughly 522% faster on the RTX 5090 32GB. The RTX 5090 32GB fits more of the catalog at Q4/8K — 38 vs 17 of 61 models (32 vs 8 GB VRAM). Largest model that fits the RTX 5090 32GB but not the RX 7600 8GB: Mixtral-8x7B-Instruct-v0.1 (46.7B). MSRP is $1,999 for the RTX 5090 32GB 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 5090 32GB posts the higher tok/s in 38 rows vs 0. Methodology.

Spec comparison

RTX 5090 32GBRX 7600 8GB
VendorNVIDIAAMD
VRAM32 GB8 GB
Memory typeGDDR7GDDR6
Memory bandwidth1,792 GB/s288 GB/s
TDP575 W165 W
MSRP (list)$1,999$269
BuySearch Amazon (affiliate)Search 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 5090 32GB tok/sRTX 5090 32GB fitsRX 7600 8GB tok/sRX 7600 8GB fitsWinner
Qwen3-0.6B0.81425.5 est.Yes229.1 est.YesRTX 5090 32GB
gemma-3-1b-it1.01140.4 est.Yes183.3 est.YesRTX 5090 32GB
Llama-3.2-1B-Instruct1.2950.3 est.Yes152.7 est.YesRTX 5090 32GB
Qwen3-1.7B2.0570.2 est.Yes91.6 est.YesRTX 5090 32GB
Qwen3-30B-A3B30.5380.1 est.Yes33.1 est.NoRTX 5090 32GB
Qwen3-Coder-30B-A3B-Instruct30.5380.1 est.Yes33.1 est.NoRTX 5090 32GB
GLM-4.7-Flash31.2380.1 est.Yes31.7 est.NoRTX 5090 32GB
Qwen3-30B-A3B-Instruct-250730.5380.1 est.Yes33.1 est.NoRTX 5090 32GB
Llama-3.2-3B-Instruct3.2356.4 est.Yes48.5 measuredYesRTX 5090 32GB
Phi-4-mini-instruct3.8300.1 est.Yes48.2 est.YesRTX 5090 32GB
Phi-4-mini-reasoning3.8300.1 est.Yes48.2 est.YesRTX 5090 32GB
gemma-3-4b-it4.3292.4 est.Yes47.0 est.YesRTX 5090 32GB
Qwen3-4B-Instruct-25074.0285.1 est.Yes45.8 est.YesRTX 5090 32GB
Qwen3-4B-Thinking-25074.0285.1 est.Yes45.8 est.YesRTX 5090 32GB
gpt-oss-20b21.5282.5 measuredYes50.7 est.NoRTX 5090 32GB

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 5090 32GBRX 7600 8GB
Catalog models that fit38 of 6117 of 61
Largest exclusive fitMixtral-8x7B-Instruct-v0.1 (46.7B)—

RTX 5090 32GB details → · RX 7600 8GB details →