Megalith
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WikiChip has published their take on AMD’s next iteration of Zen, which, being built on TSMC’s 7nm process node, will “deliver 2x the density and offer 0.5x the power at the same performance, or >1.25x the performance at the same power.” Aside from IPC improvements, the chip will see an increase in both dispatch and retire bandwidth, along with in-silicon Spectre mitigations previously provided via firmware and software.
AMD has made a large set of enhancements to Zen 2. To feed the widened execution units which were improved in throughput, the front-end had to be adjusted. For that reason, the branch prediction unit has been reworked. This includes improvements to the prefetcher and various undisclosed optimizations to the instruction cache.
AMD has made a large set of enhancements to Zen 2. To feed the widened execution units which were improved in throughput, the front-end had to be adjusted. For that reason, the branch prediction unit has been reworked. This includes improvements to the prefetcher and various undisclosed optimizations to the instruction cache.