alt Hacker NewsGDDR7x doesn't come in dimm factor?
In general soldered ram seems to get much higher bandwidth than removeable ram. See ryzen AI Max vs 9950x max ram throughputfor example
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wewewedxfgdf • today at 12:12 PM
We are talking here about slower ram to augment.
Strix Halo uses a 256bit memory interface, the normal desktop processors only have a 128bit interface, that's the biggest difference in bandwidth. For more bandwidth you need to go to a Threadripper.
Strix Halo seems to use LPDDR with 8000 MT/s, which is a bit faster than the usual 5600 MT/s-6400 MT/s "normal" DDR5-DIMMs (Albeit (expensive) faster ones seem to exist), so there's a slight edge towards soldered memory (not sure about LPCAMM2 and similar tech).
GDDR7 is a different league, a 5070 Ti also has a 256bit memory interface, but has 896GB/s bandwidth, compared to strix halo with 256GB/s