Gorgon Halo is (just) a software-patched Strix Halo to support more than up to 128 GB RAM. All Ryzen AI 400 are a rename/refresh of the Ryzen AI 300 series.
Wish AMD would allow for 256 GB RAM straight away and not artificially limit the maximum RAM config..
On desktop B850 motherboards, up to 256 GB RAM are possible, and this is on a 128-bit memory interface (aka dual-channel). Strix/Gorgon Halo use a 256-bit memory interface (and faster RAM, too, btw.), so by this argument, up to 512 GB RAM should be possible on Strix/Gorgon Halo, or even more, because the memory speed is ~1.52 times faster: 8533 MT/s vs desktop's 5600 MT/s.
But, 256-384 GB LPDDR6 RAM is where Medusa Halo comes in later and its speed / memory bandwidth, and therefore also probably compute, increases are very welcomed.
If more than 160 GB is allocateable:
You would be able to fit huggingface.co/unsloth/DeepSeek-V4-Flash-0731-GGUF at its native weights (quants perform over-proportionally worse, because it's a native mostly 4-bit release) (162 GB) + a decent amount of context tokens.
Of course, fitting 3- or 4-bit quants of any ~300B models becomes possible, like huggingface.co/unsloth/GLM-5.3-Flash-GGUF (IQ4_XS) (157 GB), tho, this is where 256 GB RAM would have been nice (see the YouTube quote), to be able to run UD-Q4_K_XL (200 GB).