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RTX 5080 16GB vs V100 16GB PCIe for Local LLMs

The RTX 5080 16GB has about 7% more memory bandwidth (960 vs 900 GB/s). Batch-1 decode tracks bandwidth closely, so a model that fits both cards should decode roughly 7% faster on the RTX 5080 16GB. Both fit the same number of catalog models at Q4/8K (25 of 73; 16 vs 16 GB VRAM). MSRP is $999 for the RTX 5080 16GB vs $8,000 for the V100 16GB PCIe. MSRP is a launch list price, not live retail — Amazon prices move; click through for the current price. Not retail-shoppable: V100 16GB PCIe (datacenter-class; cloud rental is the realistic way to use it). In the Q4/8K head-to-head below (49 shared models), the RTX 5080 16GB posts the higher tok/s in 48 rows vs 1. Methodology.

Spec comparison

RTX 5080 16GBV100 16GB PCIe
VendorNVIDIANVIDIA
VRAM16 GB16 GB
Memory typeGDDR7HBM2
Memory bandwidth960 GB/s900 GB/s
TDP360 W250 W
MSRP (list)$999$8,000
BuyNVIDIA GeForce RTX 5080 Founders Edition · More listings · eBay · Newegg · B&H Photo

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 49 shared models

ModelParams (B)RTX 5080 16GB tok/sRTX 5080 16GB fitsV100 16GB PCIe tok/sV100 16GB PCIe fitsWinner
MiniCPM5-1B1.08955.3 est.Yes895.6 est.YesRTX 5080 16GB
Qwen3.5-2B2.0515.9 est.Yes483.6 est.YesRTX 5080 16GB
Nemotron-3-Nano-Omni-30B-A3B-Reasoning-BF1630.0462.9 est.No434.0 est.NoRTX 5080 16GB
DeepSeek-R1-0528-Qwen3-8B-layer-mix-bpw-3.8-mlx2.3448.6 est.Yes420.5 est.YesRTX 5080 16GB
Qwen3-30B-A3B-Instruct-250730.5432.4 est.No405.4 est.NoRTX 5080 16GB
Qwen3.5-35B-A3B34.7362.4 est.No339.8 est.NoRTX 5080 16GB
Ornith-1.0-35B35.0356.4 est.No334.2 est.NoRTX 5080 16GB
qwen35b-a3b-fable-sft-abliterated34.7346.9 est.No325.2 est.NoRTX 5080 16GB
Qwen3.6-35B-A3B36.0338.0 est.No316.9 est.NoRTX 5080 16GB
GLM-4.7-Flash31.2333.8 est.No313.0 est.NoRTX 5080 16GB
Llama-3.2-3B-Instruct3.2322.4 est.Yes302.3 est.YesRTX 5080 16GB
gemma-4-26B-A4B-it25.2271.5 est.Yes254.5 est.YesRTX 5080 16GB
gpt-oss-20b21.5204.9 measuredYes268.7 est.YesV100 16GB PCIe
Qwen3-4B-Instruct-25074.0257.9 est.Yes241.8 est.YesRTX 5080 16GB
NVIDIA-Nemotron-3-Nano-4B-BF164.0257.9 est.Yes241.8 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 16GBV100 16GB PCIe
Catalog models that fit25 of 7325 of 73
Largest exclusive fit

RTX 5080 16GB details → · V100 16GB PCIe details →