AMD Radeon RX 9070 has been announced. The new GPUs, 9070 and 9070 XT make use of AMD’s RDNA 4 architecture and have improved ray tracing performance. $549 for the AMD Radeon RX 7900 GRE for 1440p gaming and $899 for the Radeon RX 7900 XT for 4K gaming – that is the idea.
AMD Radeon RX 9070 benchmark
The new architecture, RDNA 4, first improves the CU (Compute Unit) to improve basic performance. Specifically, it improves the memory subsystem – enhanced memory compression, adoption of 256bit/20Gbps GDDR6 memory, strengthens the scalar unit, supports dynamic register allocation, improves CU efficiency, and improves the operating clock.
Regarding dynamic register allocation, in the previous RDNA 3, the allocation of workloads to registers was static, and some registers were idle during processing. In RDNA 4, registers are managed in a pool, and requests are made when necessary, and registers are released when processing is completed, resulting in improved memory latency and improved shader core utilization.
The accelerator for ray tracing processing has evolved to the third generation, doubling throughput compared to the previous version. Specifically, the number of units for ray intersection processing has doubled, BVH compression has been improved, ray traversal and shading have been accelerated, and Oriented Bounding Box (OBB) support has been added.