GPUsNews

AMD Radeon RX 7900 XT Likely to be 40-80% Faster than the RX 6900 XT, Better RT & Geometry Performance

AMD’s Radeon RX 7900 XT is likely going to be 40-80% faster than its predecessor, as per Moore’s Law is Dead in a new video. This falls in line with what I said in my last post on the RDNA 3 flagship. Furthermore, there’s a chance that the next-gen graphics cards from AMD may not feature a truly chiplet design. Although the GPUs are going to feature at least two dies, one of them is going to be the I/O die, handling the various output ports, PCIe lanes, etc. My guess is that the flagship will feature two compute dies and one I/O die, while all the other SKUs will consist of just one compute and I/O each.

Source: MLID

This means that if Navi 33 is a dual-die design, then it should be 15-20% faster than the RX 6900 XT (Navi 21), while Navi 31 (RX 7900 XT) will be 50-80% faster thanks to two compute dies and one I/O die. Considering that GPUs are much more sensitive to latency than CPUs, the scaling is not going to be linear, indicating that we will see a performance gain of less than 2x on the top-end.

Ray-tracing performance is expected to improve with RDNA 3 with an increased amount of die space dedicated to acceleration/intersection units, along with geometry performance which saw a drop with RDNA 2. Each RDNA 2 Shader Engine packed just a single primitive unit, less than half as much on NVIDIA’s Ampere GPCs, and the original RDNA 1 design. This was primarily done in anticipation of enhanced culling brought about by mesh shading, one of the primary features of DX12.

Areej

Computer Engineering dropout (3 years), writer, journalist, and amateur poet. I started my first technology blog, Techquila while in college to address my hardware passion. Although largely successful, it was a classic example of too many people trying out multiple different things but getting nothing done. Left in late 2019 and been working on Hardware Times ever since.

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