What if it is 427 mm2 for HBM2 version, and 505 mm2 for GDDR6 version of the die?
This is my speculation based on what YOU guys speculate.
IMO, we will see N21 - 500 mm2, N22 - 340 mm2, N23 - 240 mm2.
The transistor density will be between 50 and 60 mln xTors/mm2. I won't speculate on CU counts.
We got the 505 sq mm die size for Navi 21 from multiple sources in Nov 2019. AcquarisZi from a chinese forum and Charlie from semiaccurate
推 gaddgao : 忽然好懷念水瓶座大大的八卦 11/06 00:49 把名字念對,是招喚成功的第一步~ 最近幾件case一起講 然後我發現上一篇被貼到推特上還被人翻成英文了 果然話不能講太明
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SemiAccurate’s moles have just sent us word a new high end enthusiast GPU just taped out
semiaccurate.com
This user AquarisZi also gave the die size for the remaining 2 dies - N22 - 340 and N23-240 . He mentioned the 3 dies are within a range of +-5 sq mm
有時候我也會覺得外面這群人也真的是很厲害 隨便抓幾個名字就可以講的跟真的一樣 : : 由於 AMD 的 Zen 3 架構又將持續針對 CPU 架構進行改善,可預期除了基礎單核性能以 : 外,多核的協作延遲也將會縮短,至於 GPU 部分傳出將使用 RDNA 2 架構的 Navi 23 ,
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Moore's Law is Dead and Coreteks are speculating without having a full picture of the details or doing some basic analysis. Given the 12 TF Xbox Series X with 360 sq mm die size running at an estimated 115-120w (according to my calculations based on Series X PSU rating) the area and power efficiency of RDNA2 is very good. The only remaining question is did AMD design HBM2 and GDDR6 memory controllers on the same die. Its a very reasonable decision if AMD wanted to use GDDR6 for the heavily cut Navi 21
Radeon 6800XT - 72 CU, 3SE, 6SA, 96 ROPs, 10-12 GB GDDR6 , 720-768 GB/s (16-18 Gbps GDDR6)
and HBM2E for the top 2 SKUs
Radeon 6900XT - 80 CU, 4SE, 8SA, 128 ROPs, 16 GB HBM2E, 920 GB/s (Hynix 3.6 Gbps HBM2E)
Radeon 6950XT - 96 CU, 4SE, 8SA, 128 ROPs, 16 GB HBM2E, 920 GB/s (Hynix 3.6 Gbps HBM2E)
Radeon Pro WX GPUs for Windows would also use HBM2E and so would Apple if they want a massively powerful GPU for their Mac Pro workstations.
In conclusion my expectation is AMD have a product/architecture capable of taking the GPU crown from Nvidia and I fully expect them to do that.