So 3 versions for the top Navi 48, just like 6xxx series and 7xxx series.
64 CU 256 bit 20 Gbps 16 GB
56 CU 256 bit 18 Gbps 16 GB?
48 CU 192 bit 19 Gbps 12 GB?
But given its a much smaller GPU, yields should be fairly good. Would such a heavily cut down part make sense?
Yes, you are always going to have asome percentage of dies that need to be salvaged, if yields are that good then you want a big cut to salvage the most into a single product.
They really need that 192bit N48 to fall inbetween the two N32, which seems likely if they are giving it 19Gbps GDDR6.
The main issue is how high they can push N44 and not be bandwidth limited? A 20% bump over N33 seems doable but how much farther...
If they can push N44 to ~3.7ghz that could net them ~1.35x of N33 and be within ~10% of 7700XT, but that might need 20Gbps DDR6.
The other issue is, could they do a clam shell mode with both 1GB and 2GB GDDR6 ICs and give N44 12GB of VRAM.
I have been tweaking this lineup for quite awhile but this seems to make the most sense to me, though maybe a bit optimistic in some places.
Prices are obviously up in the air, Just depends on final design/performance and a bit on the branding/model name.
N48 16GB 64CU/128ROPs @ 3.4ghz 250w ~7900XT (+50%7700XT,+30%7800XT)
N48bin 16GB 56CU/128ROPs @ 3.2ghz 220w ~7900GRE (+30%7700XT)
N48cut 12GB 48CU/96ROPs @ 3.0ghz 180w ~RTX4070 (+60%7600XT,+10%7700XT)
N44 12GB 32CU/64ROPs @ 3.7ghz 160w ~3070Ti (+35%7600XT, +10%4060Ti)
N44bin 12GB 32CU/64ROPs @ 3.2ghz 140w ~6700XT (+15%7600XT)
N44cut 8GB 28CU/64ROPs @ 2.8ghz 100w ~7600XT/RTX4060 (OEM?)
Edit- Removed my naming and pricing estimates since they were likely way off.