Released October 5th, the FP4 version of Z.ai's GLM-5.3-Flash uses about 166 GiB of VRAM; Qwen's counterpart occupies about 96 GiB on disk.
By [Ryan Merket](https://runtimewire.com/author/ryan-merket)
· Published
Primary source: [X](https://x.com/NVIDIARTXSpark/status/2112635102069248023)
Why it matters #
NVIDIA's Qwen checkpoint is validated on a single DGX Spark or RTX PRO 6000 Blackwell GPU with off, while GLM's listed configurations require two GPUs or two DGX Spark systems. Local inference can still require a multi-GPU or multi-system setup.
NVIDIA's FP4-Local version of Z.ai's GLM-5.3-Flash requires two RTX PRO 6000 Blackwell GPUs or two DGX Spark systems in the configurations NVIDIA has validated. The checkpoint went up on October 5th; NVIDIA RTX Spark's October 20th post promoted it alongside a smaller Qwen checkpoint as a way to run large models locally.…
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