← AI Hashrate 中文

RX 7700 XT 12GB vs V100 32GB SXM2 for Local LLMs

The V100 32GB SXM2 has about 108% more memory bandwidth (900 vs 432 GB/s). Batch-1 decode tracks bandwidth closely, so a model that fits both cards should decode roughly 108% faster on the V100 32GB SXM2. The V100 32GB SXM2 fits more of the catalog at Q4/8K — 43 vs 21 of 73 models (32 vs 12 GB VRAM). Largest model that fits the V100 32GB SXM2 but not the RX 7700 XT 12GB: Qwen3.6-35B-A3B-FP8 (36.0B). MSRP is $449 for the RX 7700 XT 12GB vs $10,000 for the V100 32GB SXM2. MSRP is a launch list price, not live retail — Amazon prices move; click through for the current price. Not retail-shoppable: V100 32GB SXM2 (datacenter-class; cloud rental is the realistic way to use it). In the Q4/8K head-to-head below (46 shared models), the V100 32GB SXM2 posts the higher tok/s in 46 rows vs 0. Methodology.

Spec comparison

RX 7700 XT 12GBV100 32GB SXM2
VendorAMDNVIDIA
VRAM12 GB32 GB
Memory typeGDDR6HBM2
Memory bandwidth432 GB/s900 GB/s
TDP245 W300 W
MSRP (list)$449$10,000
BuySearch Amazon · 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 46 shared models

ModelParams (B)RX 7700 XT 12GB tok/sRX 7700 XT 12GB fitsV100 32GB SXM2 tok/sV100 32GB SXM2 fitsWinner
MiniCPM5-1B1.08441.7 est.Yes895.6 est.YesV100 32GB SXM2
Qwen3.5-2B2.0238.5 est.Yes483.6 est.YesV100 32GB SXM2
DeepSeek-R1-0528-Qwen3-8B-layer-mix-bpw-3.8-mlx2.3207.4 est.Yes420.5 est.YesV100 32GB SXM2
Qwen3.6-35B-A3B36.085.5 est.No322.4 est.YesV100 32GB SXM2
Qwen3.5-35B-A3B34.791.6 est.No322.4 est.YesV100 32GB SXM2
GLM-4.7-Flash31.284.4 est.No322.4 est.YesV100 32GB SXM2
Qwen3-30B-A3B-Instruct-250730.5109.3 est.No322.4 est.YesV100 32GB SXM2
Nemotron-3-Nano-Omni-30B-A3B-Reasoning-BF1630.0117.0 est.No322.4 est.YesV100 32GB SXM2
Ornith-1.0-35B35.090.1 est.No322.4 est.YesV100 32GB SXM2
qwen35b-a3b-fable-sft-abliterated34.787.7 est.No322.4 est.YesV100 32GB SXM2
Llama-3.2-3B-Instruct3.2149.1 est.Yes302.3 est.YesV100 32GB SXM2
gpt-oss-20b21.5184.8 est.No268.7 est.YesV100 32GB SXM2
Qwen3-Coder-Next79.718.1 est.No268.3 est.NoV100 32GB SXM2
Qwen3-Next-80B-A3B-Instruct81.317.4 est.No258.2 est.NoV100 32GB SXM2
gemma-4-26B-A4B-it25.2128.8 est.No254.5 est.YesV100 32GB SXM2

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

RX 7700 XT 12GBV100 32GB SXM2
Catalog models that fit21 of 7343 of 73
Largest exclusive fitQwen3.6-35B-A3B-FP8 (36.0B)

RX 7700 XT 12GB details → · V100 32GB SXM2 details →