Not much was unveiled but it showed a Blackwell GPU with 1PFLOP of FP4 compute, 128GB unified DDR5X memory, 20 ARM cores, and ConnectX powering two QSFP slots so one can stack multiple of them. edit: While the title says "personal", Jensen did say this was aimed at startups and similar, so not your living room necessarily.
From the size and pricing ($3000) alone, it's safe to conclude it has less raw FLOPs than a 5090. Since it uses LPDDR5X, almost certainly less memory bandwidth too (5090 @ 1.8 TB/s, M4 Max w/ 128GB LPDDR5X @ 546 GB/s). Basically the only advantage is how much VRAM it packs in a small form factor, and presumably greater power efficiency at its smaller scale. The only thing it really competes with is the Mac Studio for…
However we do know that it offers 1/4 the TOPS of the new 5090. It will be less powerful than the $600 5070. Which, of course it will given power limitations.
The only real compelling value is that nvidia memory starves their desktop cards so severely. It's the small opening that Apple found, even though Apple's FP4/FP8 performance is a world below what nvidia is offering. So purely from that perspective this is a winning product, as 128GB opens up a lot of possibilities. But from a raw performance perspective, it's actually going to pale compared to other nvidia products.
