The latest information from the YouTube channel Moore’s Law is Dead sheds some light on AMD’s upcoming Zen 5 and Zen 6 CPU architectures. While previous rumors suggested significant performance gains, it seems that the reality may be more modest than anticipated. This article will delve into the details provided by Moore’s Law is Dead and provide an analysis of the potential performance improvements of these architectures.
Before discussing Zen 5 and Zen 6, let’s first review the current state of affairs. AMD’s Ryzen 7000 CPUs are built on the Zen 4 architecture, which offered a 13% average increase in instructions per clock (IPC) compared to Zen 3. This improvement, while notable, was not considered groundbreaking. It is essential to understand this context to appreciate the anticipated gains of the Zen 5 and Zen 6 architectures.
Zen 5 – Modest IPC Gains
According to Moore’s Law is Dead, Zen 5, optimistically codenamed Nirvana, is expected to deliver between 10% and 15% IPC gains. While these increases are worthwhile, they are relatively conservative compared to previous generations. Zen 3, for example, boasted a 19% IPC improvement over Zen 2. Therefore, in terms of IPC gains alone, Zen 5 may not be the most exciting advancement in CPU performance. However, when combined with other enhancements, it could still offer a meaningful boost.
The information shared by Moore’s Law is Dead suggests that Zen 6, as a more derivative architecture, will bring an additional 10% IPC gain. This indicates a continuous yet gradual improvement in performance. Furthermore, Zen 6 introduces a new 16-core complex, which represents a significant shift from the current eight-core complex in Zen 4. However, it is unclear whether the 16-core complex will feature full Zen 5 cores or lower-power Zen 5c cores. Likewise, Zen 6 is rumored to have 32-core complexes, but the composition of these complexes remains uncertain.
Comprehensive Changes, Modest Gains
Moore’s Law is Dead provides some insightful details regarding other enhancements expected in Zen 5 and Zen 6. These include an increase from 6 to 8-wide instruction dispatch, six arithmetic logic units (ALUs) per core instead of four, and various other upgrades. The leaked information also mentions significant improvements in AVX floating-point performance. However, despite these comprehensive changes, the projected IPC gains still appear relatively modest. Previous leaks suggested a 23% improvement over Zen 4, but the latest information indicates lower gains.
Additionally, Zen 6 is said to employ new packaging techniques. Unlike previous Zen-series desktop CPUs, which utilized an I/O die and multiple core complexes or compute dies alongside each other, Zen 6 will stack the compute dies on top of the I/O die. The purpose of this design is to reduce latency and potentially match the performance of a single monolithic die. However, the actual impact on performance remains to be seen and verified.
As for the timing of Zen 5 and Zen 6, the projected release dates are next year for Zen 5 and 2025 or possibly 2026 for Zen 6. It’s important to note that these dates are subject to change and should be taken with caution. The CPUs that ultimately hit the market could be faster or slower than the performance figures presented thus far.
While the leaked information regarding AMD’s Zen 5 and Zen 6 CPU architectures suggests more modest performance gains than initially rumored, it’s crucial to keep in mind that these figures are not set in stone. Only time will tell how much of an improvement these architectures will bring over their predecessors. As the industry eagerly awaits the release of Zen 5 and Zen 6, comparisons with Intel’s upcoming Arrow Lake CPUs will undoubtedly take center stage, providing valuable insights into the ongoing battle for CPU supremacy.