Jawed
Legend
Using this picture:
The smallest I can make Fiji is 21.8 x 25.7 = 560mm².
One thing I've realised about the interposer, that I think we've all missed, is that the reticle limit doesn't constrain the size of the interposer. It solely constrains the area of the interposer used for interconnects.
Hence I believe we can see in this picture how a "copper" coloured area is substantially smaller than the "green" area of the interposer. In fact it appears that the etched area within the interposer does not extend for the full height of Fiji, nor does it extend to the full width of the HBM modules
So, that's how you get an interposer that's substantially larger than the reticle limit
The smallest I can make Fiji is 21.8 x 25.7 = 560mm².
One thing I've realised about the interposer, that I think we've all missed, is that the reticle limit doesn't constrain the size of the interposer. It solely constrains the area of the interposer used for interconnects.
Hence I believe we can see in this picture how a "copper" coloured area is substantially smaller than the "green" area of the interposer. In fact it appears that the etched area within the interposer does not extend for the full height of Fiji, nor does it extend to the full width of the HBM modules
So, that's how you get an interposer that's substantially larger than the reticle limit