According to a recent listing spotted in the USB Implementers Forum website, it is expected that AMD might have few more NAVI RX 6000-series Graphics cards based on the RDNA 2 architecture in the pipeline. However, the submitted entries do not confirm whether the GPU codenames listed refers to the Navi 21 or Navi 22 variants.
AMD has already released its Navi 21 flagship Big Navi graphics cards, the Radeon RX 6900 XT, RX 6800 XT and RX 6800, respectively. The Navi 22 SKU might end up in the RX 6700 XT series of GPUs, which AMD plans to reveal at the company’s virtual CES 2021 keynote on 12th January.
The NAVI 22 GPU might initially come in two variants, the Radeon RX 6700 XT and the Radeon RX 6700, respectively. The Radeon RX 6700 XT will be based on the NAVI 22 XT GPU, whereas the non-XT plain RX 6700 GPU variant will sport the NAVI 22 XTL silicon.
A new XTXH GPU variant has been listed in the USB IF website alongside the XL, XT, XTX SKUs. It is unclear where the XTXH might land up, but it could be a high-end successor to the current RX 6900 XT graphics card, which is based on the XTX Navi 21 silicon.
Alternatively, it could also be a Mobile GPU variant, or the RX 6900 non-XT desktop GPU, but nothing can be confirmed at this point. A new XLE GPU variant has also been spotted, which could be a lower end product from AMD.
All these Navi GPU entries are listed with a PDP/Power Delivery Profile of 27 Watts. This could mean the USB Type-C connector is apparently supported by these products. Some current “reference” design AMD Radeon graphics cards support this new USB Type-C interface.
@KOMACHI_ENSAKA also spotted a new AMD Radeon product codenamed as Nashira Point, but again it is not clear whether this is an upcoming Navi GPU variant, or just an internal codename for an existing product released by AMD.
There is another possibility that the XTXH GPU variant might sport the HBM memory type, hence the H suffix, but this is just based on pure speculation. HBM is a dense, stacked version of memory with high-speed interfaces that can be used in advanced packaging. Samsung and SK Hynix make HBM chips.
HBM uses less power but posts higher bandwidth than on DDR4 or GDDR5 memory with smaller chips, making it appealing to graphics card vendors. The first GPU utilizing HBM was AMD Fiji which was released in June 2015 powering the AMD Radeon R9 Fury X.
On the other hand the first GPU chip utilizing HBM2 was the Nvidia Tesla P100 which was officially announced in April 2016.
Stay tuned for more tech news!