AMD Radeon RX 7700 XT Navi 33 Video Card Collect all available leaks and insides in a bunch
** the post is big, I advise you to "get a seagull" :)
The main conclusion from the Insider video:
The AMD RDNA 3 graphic processors line will consist of both monolithic and multichhiplial solutions. The Navi 33 graphics processor is considered to be the middle class chip and is the optimization of the NAVI 21 graphics processor on a newer RDNA architecture 3. It is based on a 6-nm monolithic crystal and must have 360-460 mm2 sizes.
This is 11-30% less than the crystal area compared to the Navi 21 graphics processor, which is used in the high-performance RADEON RX 6000 line and has a crystal size of 520 mm2. The key features of the Navi 33 graphics processor will be:
AMD RDNA 3 Navi 33 graphics processors for the RADEON RX 7700 series:
The graphics processor AMD Navi 33 will start the monolithic segment of the RDNA family 3. The graphics processor will have one crystal. The crystal is very similar to the flagship graphics processor NAVI 21, and it is expected that 6-nm TSMC technical process will be used for its manufacture.
** First source: Video from YouTube Channel Moore's Law Is Dead
There are rumors about the architectural design of the graphics processor AMD Navi 33:
Navi 33 GCD is expected to have 2 shader engines, and each shader engine has 2 shader array (2 on SE / 4 total). Earlier it was assumed that each shader array will consist of 5 WGP (10 on SE / 20 total), and each WGP includes 8 modules of SIMD32 with 32 ALU (40 SIMD32 on SA / 80 on SE / only 160). These SIMD32 blocks in the aggregate are 5120 cores, which corresponds to the number of RX 6900 XT kernels (Navi 21 xTX graphics processor).
However, based on the new numbers, the RDNA 3 Navi 33 graphics processor will have a total of 16 WGP or 4096 cores. Now we do not know whether this is a specific configuration of the chip itself, which has been updated, or new Radeon RX 7000 cards will have a trimmed configuration of Navi 33 chips with 1 WGP disconnected in each sider massif. It is argued that many RDNA 3 structures are less or even completely different from RDNA 2, which makes the architecture with a completely new design, and not revisions RDNA 2.
Navi 33 will be replaced by NAVI 23 on the GFX11 architecture, and we know that Navi 23 has only 2048 cores, which is half less than in Navi 33. The Navi 23 graphics processor is used on the Radeon RX 6600 series cards. Therefore, it can be assumed that Navi 33 will be used in the AMD RX 7600 line, unless AMD wants to move its line to one level above with NAVI 31 for the RX 7900 series, NAVI 32 for the RX 7800 series and Navi 33 for the RX 7700 series. RX 7600 line and lower in the final The result will be based on the updated 6-nm graphics processors RDNA 2:
Configurations of the graphics processor AMD RDNA 3 Navi 3X (preliminary and based on insides):
Characteristics of the graphics processor AMD Navi 33, prices and performance (again, according to Insaydam):
Navi 33 (RDNA 3) is expected to have 128-256 MB of Infinity Cache. The graphics processor will also have 2 memory connections (32-bit). It is only a 4x32-bit memory controller for a 128-bit bus interface. Since the amount of memory has decreased by half compared to the RX 6900 XT, the card will consume less energy. It will also help AMD reduce the cost of the specification and offer maps with a range of performance at a price of 400 to 500 US dollars.
As for performance, it is expected that AMD Radeon RX 7700 XT based on the Navi 33 graphics processor will offer class 6900 XT or higher performance in the ray tracing, but, given the reduced memory design, it will suffer with increasing permission. Thus, the card will be faster at a resolution of about 1080p and similarly at a resolution of 1440p, but ultimately will be the same or slower with a resolution of 4K and higher due to the limit of 8 GB of video memory. It is expected that the ray tracing will become a strong side of the card offering performance higher than the RX 6900 XT. Now 8 GB may seem lowering compared to the RX 6900 XT, but, given the price, it may be an excellent solution that does not only reduce costs, but also allows cards in large quantities without worrying about the supply of GDDR6.
This will increase the performance of the AMD RADEON RX 7600 series compared to the RX 6800 and RX 6900 series with TDP about 200 W (180-230 W). It is also suggested that the PCIE interface refers to Gen 5.0 together with the X8 channel, but it is not necessary to focus on the attention, since the channels Gen 4 and Gen 3 x8 can provide sufficient card throughput. Efficiency will be a truly strong set of AMD RDNA 3, and the red team will have a significant advantage over the NVIDIA GeForce RTX 40 "Ada Lovelace" line, which is expected to be very voracious, but there are some things preparing in the green team too, what I hope We can soon hear from reliable sources (in order to produce a full and detailed comparison).