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=== Memory Subsystem === | === Memory Subsystem === | ||
− | When AMD presented their paper at ISSCC 2018, WikiChip was able to confirm with AMD's SoC architect that {{\\|Zen|Zen's}} L2 latency was always designed to be 12 cycles. In fact all Zen-based microprocessors (including {{amd|EPYC}}, {{amd|Ryzen Threadripper}}, and Zen-based APUs) have an L2 latency of 12 cycles for all | + | When AMD presented their paper at ISSCC 2018, WikiChip was able to confirm with AMD's SoC architect that {{\\|Zen|Zen's}} L2 latency was always designed to be 12 cycles. In fact all Zen-based microprocessors (including {{amd|EPYC}}, {{amd|Ryzen Threadripper}}, and Zen-based APUs) have an L2 latency of 12 cycles for all access patterns. Only mainstream Zen-based {{amd|Ryzen}} processors (i.e., {{amd|Summit Ridge|l=core}}) have a latency of 17 cycles. The problem has been sorted out with Zen+. |
== Die == | == Die == |
Facts about "Zen+ - Microarchitectures - AMD"
codename | Zen+ + |
core count | 4 +, 6 +, 8 +, 12 +, 16 +, 24 +, 32 + and 1 + |
designer | AMD + |
first launched | April 13, 2018 + |
full page name | amd/microarchitectures/zen+ + |
instance of | microarchitecture + |
instruction set architecture | x86-64 + |
manufacturer | GlobalFoundries + |
microarchitecture type | CPU + |
name | Zen+ + |
pipeline stages | 19 + |
process | 12 nm (0.012 μm, 1.2e-5 mm) + |