Mac Studio 512GB Costs $22,299: Who Actually Needs That Much Memory?

The Mac Studio 512GB is now orderable, and it costs $22,299. That is the cheapest way to get half a terabyte of unified memory in an Apple desktop, and it only exists on the top M5 Ultra chip. Most people don’t need it, but if you run huge AI models on your own machine, this is the first Mac that can hold them.

Here’s the short version before the details.

• Price: $22,299 for M5 Ultra, 512GB memory and 1TB storage. Maxing storage at 16TB brings it to $29,799.
• Ordering: Apple began pricing the option on its online store on October 28, 2026.
• Delivery: 9to5Mac reports orders should arrive in late November to early December.
• Chip required: Only the M5 Ultra with 36 CPU cores and 80 GPU cores. The M5 Max stops at 128GB.

Those four lines tell you most of what matters. The rest of this post explains where the money goes and who should care.

What the Mac Studio 512GB price actually covers

Apple first announced the M5 Max and M5 Ultra Mac Studio models in August. The 512GB option was promised for October, and that is what just got a price. According to MacRumors, the 36-core, 80-core M5 Ultra starts at $6,799, and the 512GB memory upgrade adds $15,500 on top.

That works out to roughly $37 for every extra gigabyte over the 96GB base. It’s steep, and it’s the reason the total lands above $22,000.

Here is how the two chips compare, using the specs in MacRumors’ buyer’s guide.

The Ultra’s cheapest 96GB option actually has less memory than the Max’s 128GB top option. If you only need memory, check the Max first.

Who really needs 512GB for local AI

The main buyer is someone running large language models offline. A model’s weights have to sit in memory, and on a Mac the CPU and GPU share one pool, so a big unified memory pool is the whole point.

A rough rule of thumb: a model compressed to 4-bit needs about half a gigabyte per billion parameters, plus extra for the context window. By that math, a 400-billion-parameter model needs around 200GB. Something like the 816B Muse Spark Open would need roughly 400GB, which only fits in the 512GB machine. Treat these as estimates, since real usage varies with the format and context length.

Speed matters too, not just size. When a model writes text, the chip must keep reading its weights from memory, so bandwidth sets the pace. The Ultra’s 1.2TB/s is roughly double the Max’s 614GB/s, which is why the Ultra is the pick for big models even at lower memory sizes like 256GB.

Smaller models don’t need this. Our guide to Recursive Flint shows a 40B coding model running on a 48GB Mac, which costs a tiny fraction of this price.

Other buyers who may care include video teams doing 8K work and anyone driving many displays. The Ultra supports up to eight 6K screens, according to the same MacRumors guide.

Why the memory upgrade costs so much

Apple’s memory is soldered into the chip package, so you can’t buy RAM elsewhere and add it later. You pay Apple’s price or you go without.

The timing also lines up with a tight RAM market. We covered why SK Hynix expects memory prices to stay high, and that pressure likely doesn’t help. Apple hasn’t said why the upgrade costs what it does, so that link is our reading, not a confirmed reason.

Should you order now or wait?

If you already know your workload needs 512GB, order soon. Delivery of late November to early December is not short, and configure-to-order machines can slip.

If you are guessing, don’t. Rent cloud GPU time for a month first and see how much memory your models really use. You can also cluster machines: both Mac Studio models support clustering over Thunderbolt 5, according to MacRumors. Two cheaper machines may suit some jobs better than one extreme one, though this depends on your software.

One more tip: plan your storage before you click. Big models are large files. A single 400GB download fills a 1TB drive fast, so many buyers will want external fast storage or a larger internal tier.

Frequently Asked Questions

How much does the Mac Studio 512GB cost?

It costs $22,299 in the US with the M5 Ultra, 512GB of memory and 1TB of storage. With 16TB of storage, the price rises to $29,799.

Can I add 512GB to the M5 Max Mac Studio?

No. The M5 Max tops out at 128GB. The 512GB option needs the 36-core CPU, 80-core GPU M5 Ultra.

When will the Mac Studio 512GB ship?

9to5Mac reports that orders should arrive in late November to early December. Check Apple’s order page for your own delivery estimate.

Is 512GB worth it just for gaming or editing?

Almost certainly not. Normal editing and gaming work fits well within 64GB to 128GB. The 512GB tier is aimed at huge AI models.

The bottom line

Buy this only if a specific giant model is blocking your work today. For nearly everyone else, an M5 Max with 128GB covers serious work for a fraction of the cost, and the extra $15,500 is better spent on time with a cloud GPU first.