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I Compared Every Way to Get 64GB for Local AI. Here Is What Matters
The same 64GB of memory can cost $31 or $154 per gigabyte. Here is how to choose without overpaying.
If you want to run AI models on your own desk instead of paying for cloud subscriptions, you quickly hit one question: how much memory do I need?
After comparing the options, my answer is 64GB. That is where local AI stops feeling like a toy and starts feeling like a real tool.
But there is a trap. You can reach 64GB through a tiny mini PC, a Mac, or a stack of graphics cards. The price per gigabyte ranges from about $31 to over $150. Some of the cheapest options also come with a catch that most buyers only discover after paying.
This guide walks through every option from cheapest to most expensive and explains what each one can actually run, how fast, and who should buy it.
Why 64GB Is the Sweet Spot
AI models live in memory while they run, and so does the conversation you’re having with them. You need room for both.
Here is what fits:
- Llama 3.3 70B, compressed to 4-bit (the format most people use), is about 42GB. That leaves around 20GB free for the conversation.
