On December 28 (local time), AMD announced the “Radeon RX 6800 XT” and “Radeon RX 6800” series GPUs that adopt the new generation RDNA 2 architecture. It will go on sale on November 18 and will cost $ 649 for the first and $ 579 for the latter.
Adopting RDNA 2 which is a performance power ratio of 54% higher than conventional RDNA architecture, the power consumption of the whole board is reduced to 300W while the performance is comparable to the GeForce RTX 30 series.It uses the same 7nm process as before, but has 128MB of L3 “Infinity Cache cache “inside the GPU, which is the same as the Zen 3 core architecture of the CPU. Power savings are realized by suppressing data movement.
In addition, by optimizing the entire GPU design, the clock speed is increased by 30%. On the RX 6800 XT above, the game clock hit 2,015MHz and the Boost clock hit 2,250MHz. In Radeon Software, “Rage Mode” which is automatically overclocked with one click is installed, and further performance enhancements are possible.
When combined with the Ryzen 5000 series CPU, it also has the function of maximizing memory access performance, which seems to be the effect of PCI Express 4.0.
The API supported is DirectX 12 Ultimate, which supports late races, Variable Rate Shading, mesh shaders, sampler feedback, etc. In addition, it supports “Radeon Boost”, which dynamically lowers resolution and reduces latency by up to 37% when combined with FreeSync, and “Fidelity FX”, which is a unique function such as super resolution.
The high-end Radeon RX 6800 XT features 72 Compute Units, 2,015MHz game clock, 2,250MHz Boost clock and 300W power consumption.
The lower Radeon RX 6800 has 60 Compute Units, 1.815MHz game clock, 2.105MHz Boost clock and 250W power consumption.
Both have 128MB Infinity Cache capacity, GDDR6 video memory, 256bit bus width, and 16GB capacity.
According to AMD benchmarks, the Radeon RX 6800 XT will perform as well or better than the GeForce RTX 3080, and the Radeon RX 6800 will outperform the older generation NVIDIA GeForce RTX 2080 Ti.
As the last hidden ball of the show, Lisa Su flaunted the top “Radeon RX 6900 XT”. This is a model to compete with the GeForce RTX 3090 and will launch at a price of $ 999.
The Count Units will increase by 80, but game hours, Boost hours, power consumption and board size will exactly match 6800 XT. In other words, the power performance ratio is increased by 65% compared to RDNA. It will be released on December 8th.
The company says it is also developing the next generation “RDNA 3”.