Pyyan / Compare / RTX 3090 (used) vs DGX Spark

RTX 3090 (used) vs DGX Spark

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Local AI Hardware · verified 13 Aug 2026

RTX 3090 (used)NVIDIAcurrent
DGX SparkNVIDIAcurrent
3 slots left
SpecificationRTX 3090 (used)DGX Spark
SummaryBest value entry point.Hard to recommend for most people.
Memory24GB128GB LPDDR5x
Bandwidth273 GB/s
Price~$900$4,699
70B tok/s2.7
CategoryLocal AI HardwareLocal AI Hardware
OfficialNVIDIANVIDIA

Highlighted rows are where these differ.

RTX 3090 (used)

  • Handles models up to 32B
  • Last consumer card with NVLink

Best for getting started.

Full spec sheet →

DGX Spark

  • 273 GB/s — a Mac Studio does twice that for less
  • Only buy for full CUDA parity at 128GB

Best for CUDA + multi-node only.

Full spec sheet →