AMD’s first RDNA 3 GPUs are the Radeon RX 7900 XTX and 7900 XT

Now that NVIDIA has kicked off the latest video card wave with the insanely powerful RTX 4090, all eyes are on AMD to see how it will respond. Today, the company announced the Radeon RX 7900 XTX and RX 7900 XT, two confusingly named GPUs powered by its new RDNA 3 architecture. On stage during its Las Vegas launch event, AMD CEO Dr. Lisa Su claimed the new hardware offers a 54 percent increase in performance per watt over the previous GPUs. She also emphasized that AMD is focused on delivering complex performance with reasonable power usage, a clear knock against NVIDIA's power-hungry (and PSU cable-melting) RTX 4090.

These cards aren't just a mere spec bump. Su says RDNA 3 is the world's first chiplet-based GPU, giving it a modular design that can be easily tweaked down the line. Currently, those chiplets include a 5nm GPU compute die and a 6nm memory cache die. It's capable of reaching up to 61 teraflops of computing power (up from a maximum of 23 TFLOPs in RDNA 2), can manage up to 24GB of GDDR6 RAM and consists of 58 billion transistors.

Naturally, the flagship Radeon RX 7900 XTX gets the full 24GB of RAM, while the 7900 XT will ship with 20GB. Both cards look similar to AMD's last-gen hardware, albeit with bigger fans and a sleeker heatsink design. AMD SVP Sam Naffziger also joked that you won't need any new power cables for these cards — you should be able to drop them into your existing system. 

When it comes to ray tracing, historically one of AMD's weakpoints, the company says the new cards have a next-generation accelerator with 50 percent more performance per compute unit. They'll offer 1.5 times more rays in flight, new dedicated instruction and upgraded ray box sorting. Hopefully, that means we'll see closer ray tracing parity with NVIDIA's cards. The Radeon 7000 GPUs also feature AMD's new Radiance Display Engine, with support for 480Hz 4K gaming and 165Hz 8K performance. (And yes, the latter sounds like a stretch to us, as well.)

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