It has been a few weeks since Patrick Schur published information about the mobile variants of the RX 6700 series, but the software engineer has offered yet more insights into the upcoming RDNA 2 cards. According to Schur, Navi 22 GPUs will have 18.31 x 18.27 mm dies, which equates to a size of 334.52 mm². As Wccftech points out, a die size of 334.52 mm² would be over a third larger than the die of the RX 5700 XT.
Additionally, Navi 21 GPUs will offer up to a 192-bit memory interface split across six chips. Apparently, SKUs with a 192-bit bus width will also have a target TGP of 146 W, although Schur has previously claimed that the Navi 22 XT GPU has a TGP of 186-211 W. By contrast, Navi 22 SKUs with 90, 110 and 135 W TGPs will be limited to a 160-bit bus on five memory chips.
AMD supposedly plans to release Navi 23 and Navi 24 mobile GPUs too, which would make Navi 22 the top-end SKUs of the RX 6000M product stack. Navi 22 GPUs are also expected to offer up to 2,560 cores, 40 Compute Units (CUs) and up to 12 GB of VRAM. RX 6000M laptops should begin arriving in the first half of 2021, just in time to challenge NVIDIA's RTX 30 series options.
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