A new leak has offered fresh insight into the die sizes of AMD's next-generation Big Navi products. It comes courtesy of AquariusZi, a reputable user on the PC Shipping Forums.
In particular, the leak hones in on what is expected to the AMD RX 5950 XT, a flagship 7nm GPU that will reportedly feature a massive 505 mm2 die, which suggests twice the performance of the existing RX 5700 XT.
Alongside this, the leak suggests AMD’s Navi 22 and Navi 23 GPUs will feature 340 mm2 and 240 mm2 dies. The Navi 23 is widely expected to act as a replacement for the RX 5700 XT, which has a die size of 251 mm2. As the source points out, it's best to factor in a margin error of 5 mm2 to be on the safe side.
While the RX 5700 XT boasts 40 Compute units, it's expected that the Navi 21 GPU could up this to 80 Compute Units based on these rumored die sizes. We also have to factor in the jump from RDNA1 to RDNA2, which will naturally boost performance considerably.
While this remains speculative, it's worth considering that these estimates assume that the entire die will be dedicated to shader cores. Should AMD opt to fit in dedicated ray-tracing hardware, then we can expect the CU count to be somewhat lower. Nevertheless, the RDNA2 architecture and the massive die size do hint at somewhere in the ballpark of twice the performance.
As for when we can expect to hear the official word from AMD, all signs point to a reveal in the months ahead. BRA certification of AMD cards have popped up in droves in recent times, and benchmarks have appeared on CubeVR. In the same vein, recent RRA certification of a big line of GPUs suggests as much with four GPU code-names appearing in EEC filings. Those are Radeon RX 5950 XT, Radeon RX5950, Radeon RX 5900, and Radeon RX 5800.
With NVIDIA expected to reveal the Ampere GPUs next month, AMD will likely follow suit shortly afterward.