Digital Foundry breaks down AMD's RX 7800 XT and RX 7700 XT graphics card announcements, including performance analysis…
Both graphics cards use the new Navi 32 GPU. The 7800 XT gets the fully-enabled 60CU version with a 256-bit memory bus, 64MB of Infinity Cache and 16GB of GDDR6 memory running at 19.5Gbps, while the 7700 XT is cut-down - but not by much at all. It uses a 54CU design with a 192-bit bus and 48MB of Infinity Cache, backed with 12GB of GDDR6 running at 18Gbps. TDP figures are also very similar, at 245W vs 263W, with the 7700 XT clocked higher to make up for its lower CU complement.
AMD's performance data looks impressive here, with the RX 7800 XT trading blows with the RTX 4070 and the RX 7700 XT more convincingly dealing with the RTX 4060 Ti. Both cards are also shown exceeding 60fps at max settings in a host of recent AAA releases, including The Last of Us Part 1, Star Wars Jedi: Survivor, Hogwarts Legacy and Call of Duty: Modern Warfare 2.
Yeston continues to offer the most visually striking AMD graphics card designs, with other vendors offering only variations on black, grey, white and red. |AMD points to leads for the 7800 XT against the RTX 4070 by up to 23 percent in Modern Warfare 2, Cyberpunk 2077 and Hogwarts Legacy, while being up to 18 percent behind in RT titles such as Dying Light 2, Marvel's Spider Man: Miles Morales, F1 23 and Doom Eternal.
The RX 7800 XT is available in an AMD reference dual-fan, dual-slot design, in addition to third-party designs from partners such as ASRock, Asus, Gigabyte, PowerColor, Sapphire and XFX. The reference model has three DisplayPort 2.1 ports and one HDMI 2.1 port, and takes two eight-pin power inputs. Meanwhile, the 7700 XT is third-party only, with no reference model.
Both cards offer noticeably more VRAM than their direct competitors, with 12GB on the 7700 XT and 16GB on the 7800 XT, which should inure them against some of the unjustifiably VRAM-heavy titles we've seen in recent months - particularly from high-profile PC ports from PS5. Based on the current state of play with the most recent titles, the 12GB of memory in the 7700 XT should prove particularly effective up against the 8GB 4060 Ti.
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