---
title: "Discussion on \"Where does a 70B model actually fit? Dual RTX 3090 vs DGX Spark 64GB vs 128GB\" | Hashnode"
description: "Discussion on \"Where does a 70B model actually fit? Dual RTX 3090 vs DGX Spark 64GB vs 128GB\". 70B dense models are the point where a single consumer GPU stops being enough. Here is what the memory math says for the three setups people usually compare.\nThe baseline: Llama 3.3 70B at Q4_K_M\nAbou"
url: "https://hashnode.com/posts/where-does-a-70b-model-actually-fit-dual-rtx-3090-vs-dgx-spark-64gb-vs-128gb/6af28648870d07ceeb681e1f"
---

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# [Where does a 70B model actually fit? Dual RTX 3090 vs DGX Spark 64GB vs 128GB](https://sheephess9527.hashnode.dev/where-does-a-70b-model-actually-fit-dual-rtx-3090-vs-dgx-spark-64gb-vs-128gb?utm_source=hashnode&utm_medium=feed)

70B dense models are the point where a single consumer GPU stops being enough. Here is what the memory math says for the three setups people usually compare. The baseline: Llama 3.3 70B at Q4\_K\_M Abou

1d ago · 3 min read · sheephess9527.hashnode.dev  
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-   [#machine-learning](https://hashnode.com/tag/machine-learning)
-   [#llm](https://hashnode.com/tag/llm)
-   [#gpu](https://hashnode.com/tag/gpu)

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