September 6th signifies a significant milestone for AMD, with the release of their third and final Navi 3X GPU named Navi 32. Positioned within the heart of the desktop Radeon RX 7000 series, this processor will power two models: the RX 7800 XT and the RX 7700 XT.
AMD is targeting the high-end market with its competitively priced cards at $499 and $449, a direct challenge to NVIDIA’s GeForce RTX 4070 ($599) and RTX 4060 Ti 16GB ($499). On paper and based on AMD’s benchmarks, the RX 7800/7700 pair offers superior speed and value. However, reviewers may uncover additional aspects of this narrative.
The RX 7800 XT comes equipped with the Navi 32 XT GPU, featuring an impressive 60 Compute Units (3840 Stream Processors). It takes full advantage of a multi-chip design, utilizing 5nm GCD and 6nm MCD technologies, boasting a remarkable 28.1 billion transistors, surpassing even Navi 21’s 26.8 billion count. The RX 7800 XT showcases a game clock of 2124 MHz and a boost clock of 2430 MHz, but preliminary data from board partners suggests potential clock enhancements in custom models.
Furthermore, the RX 7800 XT is equipped with 16GB of GDDR6 memory running at a speed of 19.5 Gbps. Paired with a 256-bit memory bus, this yields a maximum theoretical bandwidth of 624 GB/s, which increases to an impressive 2708 GB/s when factoring in the 64MB Infinity Cache.
The RX 7700 XT from AMD utilizes the same GPU but with fewer active cores, precisely set at 54 Compute Units (3454 Stream Processors). In terms of memory, this model offers a reduced capacity of 12GB GDDR6, operating on a 192-bit bus, with lower clock speeds compared to the Navi 32 XT. It features a memory speed of 18 Gbps and a bandwidth of 432 GB/s (or 1995 GB/s when accounting for the Infinity Cache).
As mentioned earlier, the Radeon RX 7700 XT won’t come with AMD’s MBA (Made by AMD) cooler design; it will exclusively be available as a partner SKU. In contrast, the RX 7800 XT will be introduced with the MBA design and should be obtainable through AMD’s official distribution channels.