In the weeks before AMD’s presentation of the Radeon RX graphics card series 6000 aka “Big Navi “the rumors about the new top models are piling up. The website Videocardz provides a more detailed picture of the specifications and claims to have received and cross-checked its information from various sources.

The first graphics chip with RDNA-2 architecture, navigation system 21, should according to Videocardz in different configurations for the Radeon RX 6900 XT, Radeon RX 6800 XT and Radeon RX 6800 for Use. The top model therefore uses 72 Compute units with 5000 Shader cores (Navi 21 XTX) and should for the time being only appear in the form of AMD’s reference design.

The smaller variants would appear 72 Compute Units (4608 Shader-Cores, Navi 21 XT) or 40 (4096 Shader-Cores, Navi 21 XL). The boost clock frequencies in games should exceed the 2 GHz mark in the XT versions ex works. AMD brought heavily trimmed XL versions earlier in order to still be able to use large chips with many defects or less clock potential.

Graphic card RX 6900 XT RX 6800 XT RX 6800 RX 5700 XT graphics chip Navi 21 XTX Navi 21 XT Navi 21 XL Navi 10 XT Compute Units 80 72 64 40 Shader cores 5120 4608 4096 2560 Storage 16 GByte GDDR6 16 GByte GDDR6 16 GByte GDDR6 8 GByte GDDR6 Transfer rate 512 GByte / s 512 GByte / s 512 GByte / s 448 GByte / s 16 GByte memory for all In all three cases 16 GByte GDDR6-RAM on 256 Highway hang. Compared to the Radeon RX 5700 XT, the transfer rate could only be increased by increasing the memory clock frequency increase – we’re talking about 4000 instead of 3500 MHz, i.e. 512 instead of 448 GByte / s.

Compared with the increase in raw performance through the many shader cores would have a relatively low transfer rate. A newly designed cache design is rumored to be effective in saving bandwidth – AMD itself heated it up with the recently registered trademark “Infinity Cache”.

AMD shows the first Radeon-RX – 6000-Graphic card.

(Source: AMD) Nvidia is arming itself Compared to Radeon RX 5000 against GeForce RTX 2000 an AMD compute unit achieved a similar amount of 3D performance as an Nvidia shader multiprocessor. With the successors, both chip manufacturers increase the performance per shader cluster and build more of it. Nvidia’s top model GeForce RTX 3090 nu