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Tesla P4 8GB vs RTX 5080 16GB for Local LLMs

The RTX 5080 16GB has about 400% more memory bandwidth (960 vs 192 GB/s). Batch-1 decode tracks bandwidth closely, so a model that fits both cards should decode roughly 400% faster on the RTX 5080 16GB. The RTX 5080 16GB fits more of the catalog at Q4/8K — 24 vs 16 of 69 models (16 vs 8 GB VRAM). Largest model that fits the RTX 5080 16GB but not the Tesla P4 8GB: gemma-4-26B-A4B-it (25.2B). MSRP is $80 for the Tesla P4 8GB vs $999 for the RTX 5080 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 (39 shared models), the RTX 5080 16GB posts the higher tok/s in 39 rows vs 0. Methodology.

Spec comparison

Tesla P4 8GBRTX 5080 16GB
VendorNVIDIANVIDIA
VRAM8 GB16 GB
Memory typeGDDR5GDDR7
Memory bandwidth192 GB/s960 GB/s
TDP75 W360 W
MSRP (list)$80$999
BuySearch Amazon (affiliate)NVIDIA GeForce RTX 5080 Founders Edition (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 39 shared models

ModelParams (B)Tesla P4 8GB tok/sTesla P4 8GB fitsRTX 5080 16GB tok/sRTX 5080 16GB fitsWinner
MiniCPM5-1B1.08113.1 est.Yes565.7 est.YesRTX 5080 16GB
Nemotron-3-Nano-Omni-30B-A3B-Reasoning-BF1630.024.1 est.No483.2 est.NoRTX 5080 16GB
Qwen3-30B-A3B-Instruct-250730.521.9 est.No439.5 est.NoRTX 5080 16GB
GLM-4.7-Flash31.221.0 est.No421.9 est.NoRTX 5080 16GB
Qwen3.5-35B-A3B34.718.2 est.No365.3 est.NoRTX 5080 16GB
qwen35b-a3b-fable-sft-abliterated34.717.3 est.No346.9 est.NoRTX 5080 16GB
Ornith-1.0-35B35.017.0 est.No341.6 est.NoRTX 5080 16GB
Qwen3.6-35B-A3B36.017.0 est.No340.6 est.NoRTX 5080 16GB
Qwen3.5-2B2.061.1 est.Yes305.5 est.YesRTX 5080 16GB
DeepSeek-R1-0528-Qwen3-8B-layer-mix-bpw-3.8-mlx2.353.1 est.Yes265.6 est.YesRTX 5080 16GB
gpt-oss-20b21.533.6 est.No204.9 measuredYesRTX 5080 16GB
Llama-3.2-3B-Instruct3.238.2 est.Yes190.9 est.YesRTX 5080 16GB
Mistral-7B-Instruct-v0.37.217.0 est.Yes163.6 measuredYesRTX 5080 16GB
gemma-4-26B-A4B-it25.223.9 est.No160.8 est.YesRTX 5080 16GB
Qwen3-4B-Instruct-25074.030.5 est.Yes152.7 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

Tesla P4 8GBRTX 5080 16GB
Catalog models that fit16 of 6924 of 69
Largest exclusive fit—gemma-4-26B-A4B-it (25.2B)

Tesla P4 8GB details → · RTX 5080 16GB details →