Zen 3
Zen 3 is the codename for a CPU microarchitecture by AMD, released on November 5, 2020. It is the successor to Zen 2 and uses TSMC's 7 nm process for the chiplets and GlobalFoundries's 14 nm process for the I/O die on the server chips and 12 nm for desktop chips. Zen 3 powers Ryzen 5000 mainstream desktop processors (codenamed "Vermeer") and Epyc server processors (codenamed "Milan"). Zen 3 is supported on motherboards with 500 series chipsets; 400 series boards also saw support on select B450 / X470 motherboards with certain BIOSes. Zen 3 is the last microarchitecture before AMD switched to DDR5 memory and new sockets, which are AM5 for the desktop "Ryzen" chips alongside SP5 and SP6 for the EPYC server platform. According to AMD, Zen 3 has a 19% higher instructions per cycle (IPC) on average than Zen 2.
| General information | |
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| Launched | November 5, 2020 |
| Designed by | AMD |
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| Cache | |
| L1 cache | 64 KB (per core) |
| L2 cache | 512 KB (per core) |
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| Architecture and classification | |
| Technology node | |
| Instruction set | AMD64 (x86_64) |
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| History | |
| Predecessor(s) | Zen 2 |
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| Support status | |
| Supported | |
On April 1, 2022, AMD released the new Ryzen 6000 series for the laptop, using an improved Zen 3+ architecture. On April 20, 2022, AMD also released the Ryzen 7 5800X3D desktop processor, which increases the single threading performance by another 15% in gaming by using, for the first time in a PC product, 3D vertically stacked L3 cache.