AMD Radeon RX 6500XT is only PCIe 4.0 x4 interface
At CES 2022, AMD finally released the Radeon RX 6500XT/RX 6400. The new graphics card is based on the Navi 24 core and is manufactured using a 6nm process. It is equipped with 16MB of infinite cache, 1MB of L2 cache, and 128KB of L1 cache. Radeon RX 6500XT will be configured with 16 CUs and have 1024 stream processors, while RX 6400 will have only 12 CUs and 768 stream processors.
According to ASRock’s official information, the PCIe 4.0 interface of the Radeon RX 6500XT is only four lanes, which is less than the eight lanes of the Navi 23 core-based Radeon RX 6600XT. The bandwidth of PCIe 4.0 x4 is 8GB/s, which is equal to the bandwidth of PCIe 3.0 x8 or PCIe 2.0 x16. Except for ASRock, other graphics card manufacturers have not mentioned this for the time being.
Additionally, the Radeon RX 6500 XT lacks some important features from other Radeon RX 6000 series GPUs. According to the information compiled by 3DCenter, the Navi 24 core does not support 4K H.264/H.265 encoding and AV1 decoding. If users have rigid needs for these functions, then the Radeon RX 6500 XT/RX 6400 graphics card with Navi 24 is not an ideal choice.
