According to the leak, this chip features a dual-CCD design, with each chiplet pairing 32 MB of on-die cache with 64 MB of stacked 3D V-Cache, marking the first time AMD may ship a desktop CPU with 3D V-Cache on both dies.
Good to hear AMD are at last considering a dual-CCD X3D cache design. I might have to start thinking about a new desktop build with Zen 6 (I am currently on a 5800X + 3080 from early 2021).
the adjusted TDP on both makes me wonder what is going on. So are we going to spend that juice on clocks? I/O (from threadripper I hope) just needed to be a bigger size to handle stuff?? (I dont know the node they made the new ones on.) We going to be pushing the infinity fabric to 1:1 with 8000 MT ram? Something has to be up for that much more power at factory settings.
the adjusted TDP on both
Isn’t the 8C/16T having a TDP of 120W the same as the existing 9800X3D? https://www.techpowerup.com/cpu-specs/ryzen-7-9800x3d.c3891
So maybe that one’s just a “9700X3D” (or whatever name they go with) with marginally lower clocks than the 9800X3D?
I dont know what they are aiming for on the lower core count one, maybe it super weird binning of really good cores just only 4 made it on each die and this is them being like ok we wanna save money on wasted silicon lets make a dual chiplet and make it an x3d now that we have the cache thing work over duals. I cant see the reason for what the leak suggests on that small one.
That’s an interesting take, but I reckon it’d be a tough sell given the latency penalty it’d bring with it to do that, especially if the core scheduling is ever “wrong” and ends up unnecessarily bouncing between the dies. Guess we’ll have to wait and see!
Yeah it was the only reason I could think of on the fly that they are even doing this. Maybe with the I/O improvements that are in the threadripper maybe there is some locking down of how caching works with this so they tend to understand where the information is, and the cores it will put to use it. But I would think that would be more of a scheduler task, but I dont understand that level very well, or movements in that area.
