AMD lifted the veil on its next-gen Radeon RX 7900 XTX and 7900 XT gaming cards today, and they look to be performance-per-watt killers.
AMD’s RDNA 3 GPUs Take Flight In Two New PC Gaming Graphics Cards That Are Easy, Powerful Upgrades
AMD RDNA 3 Is The World First Chiplet-Based Gaming GPU Architecture
AMD RDNA 3 Infinity Cache Gets A Major Bandwidth Lift, As Does Perf-Per-Watt
Say Hello To 50% Faster Radeon Ray Tracing
DisplayPort 2.1 And AV1 Support – It’s In There
Today, AMD held its Together We Advance_Gaming launch event for its new RDNA 3-based Radeon 7000 series GPUs. AMD is first introducing two high end GPUs, the Radeon RX 7900 XTX and the Radeon RX 7900 XT.These cards are set to battle it out with NVIDIA’s new Ada Lovelace GPUs and the GeForce RTX 4090 and 4080 , but perhaps not as directly as some may have expected. AMD says it is committed to competing in the “sub-$1000 GPU space” and is poised to compete on value if not raw horsepower. While AMD has shared some internal performance numbers today, we will need to wait for independent testing from our own review here at HH and others, to truly assess how this messaging holds up.The Radeon 7000 series is built on AMD’s RDNA 3 architecture. AMD states that its goals for RDNA 3 are to accelerate performance-per-watt leadership, raise the bar for high resolution and high framerate gaming, and to usher in next-gen gaming experiences. AMD has turned to a chiplet architecture to accomplish these goals, a first for gaming GPUs.The chiplet complex consists of a 5nm graphics compute die (GCD) which is flanked top and bottom by up to six 6nm memory cache dice (MCD). The RX 7900 XTX uses the full complement of 6 MCDs which aggregates as a 384-bit memory bus (64-bit per die) with GDDR6 memory offering 20Gbps of throughput. The RX 7900 XT uses 5 MCDs with a corresponding 320-bit bus. AMD notes that the RX 7900 XT will still have 6 MCDs mounted, but one is a dummy die that is functionally disabled for assembly and stability reasons.The GCD die measures 300mm² and the MCD dice measure 37mm² each (about 222mm² total), and altogether weigh in at 58 billion transistors. AMD has not yet disclosed the transistor counts of the GCD and MCD individually, but we can leave that to the reader to guestimate.
