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AMD's Next AI Accelerator Carries 432 Gigabytes of Memory -- 50% More Than the Last One. Here's the Bill That Comes With It.

Key PointsAMD's Instinct MI455X is specified at 432 gigabytes of HBM4 memory per chip, up 50% from the 288 gigabytes of HBM3E on the MI355X.

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Mac Studio M5 Ultra vs NVIDIA DGX Spark: The $5,500 Local AI Bet

Two weeks ago I priced out what it would take to run a 200B-parameter model in my apartment in Dhaka without cloud tokens.

  • Mac Studio M5 Ultra offers 512GB unified memory and 1.2TB/s memory bandwidth.
  • DGX Spark provides 128GB LPDDR5x memory at 273GB/s bandwidth.
  • Mac Studio supports larger models with 4-bit quantization up to 200 billion parameters.

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