AMD's RX 7900 series graphics cards were released last week, and although the performance is much better than that of the previous generation of RX 6000, many people are not satisfied with it, especially when compared with the RTX 4080amp 4090. the new flagship still lags behind, especially the light-tracking performance.

For this performance, many people began to look for reasons, some said that the AMD driver optimization is not enough, but a more widespread view is that the current RX 7900 graphics card is defectiveThe A0 used by AMD to step into the core of RDNA3 is not full of blood.Some of the units are not working properly.

Prior to this, the veteran hardware player 0x22h put forward a point of view that there is a major flaw in the RDNA3 architecture design, that is, after adding the SIMD32 unit, it did not improve the register specification accordingly.

Prior to this, the veteran hardware player 0x22h put forward a point of view that there is a major flaw in the RDNA3 architecture design, that is, after adding the SIMD32 unit, it did not improve the register specification accordingly.

This leads to the shortage of internal computing resources in RDNA3 GPU and the actual peak performance.Only 5 of the theoretical value is 6, in other words, more than 16% of the theoretical performance is wasted.

This statement has spread widely, and many people are looking forward to the follow-up release of a full-blooded version of the RDNA3 core by AMD. In theory, the performance can be improved by about 20%. It should be no problem for non-optical performance to catch up with RTX 4090.

However, this dream was also shattered.AMD has clarified the flaw in the A0 step, saying that the current RDNA3 architecture shader is normal and has no defects.

AMD said that like previous generations of hardware, RDNA3 supports shader prefetching, and the problematic code is only an experimental feature that is not included in these products.It will not be enabled in this generation of products.

AMD stressed that this is a common industry practice.Includes experimental features for exploration and deployment in future products.

To put it simply, AMD's statement means that there are no defects in the current RX 7900 series graphics cards, and previous code tests showed that the performance of only the theoretical value of 5x6 is misunderstood, because this feature is experimental and does not exist in the current RDNA3 architecture.