![]() It features, for the first time in a desktop PC product, 3D-stacked vertical 元 cache, which in the size of an extra 64 MB on top of the usual 32 MB increases the total amount to 96 MB and brings tremendous performance improvements for gaming, rivalling the newest processors of the competition while being much more power efficient. On April 20, 2022, AMD released the R7 5800X3D, the last member of the AM4 family. All cache read and write operations are done at 32 bytes per cycle. L2 cache capacity and latency remain the same at 512KB and 12 cycles. Total cache bandwidth on all 8 cores combined remains the same due to power consumption concerns. This new arrangement improves the cache hit rate as well as performance in situations that require cache data to be exchanged among cores, but increases cache latency from 39 cycles in Zen 2 to 46 clock cycles and halves per-core cache bandwidth, although both problems are partially mitigated by higher clock speeds. ![]() Zen 2's two 16MB pools each shared among 4 cores in a core complex, of which there were two per chiplet. In Zen 3, a single 32MB 元 cache pool is shared among all 8 cores in a chiplet, vs. Intel and Nvidia have since implemented this feature as well. This technology allows CPU to directly access all of compatible video card's VRAM. Zen 3 (along with AMD's RDNA2 GPUs) were also the first implementation of Resizable BAR, an optional feature introduced in PCIe 2.0, that was branded as Smart Access Memory (SAM). The new configuration allows all 8 cores of the CCX to directly communicate with each other and the 元 Cache instead of having to use the IO die through the Infinity Fabric. A Zen 3 CCD is composed of a single core complex (CCX) containing 8 CPU cores and 32 MB of shared 元 cache, this is in contrast to Zen 2 where each CCD is composed of 2 CCX, each containing 4 cores each as well as 16 MB of 元 cache. Like Zen 2, Zen 3 is composed of up to 2 core complex dies (CCD) along with a separate IO die containing the I/O components. Zen 3 is a significant incremental improvement over its predecessors, with an IPC increase of 19%, and being capable of reaching higher clock speeds. 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 元 cache. On April 1, 2022, AMD released the new Ryzen 6000 series for the laptop, using an improved Zen 3+ architecture. According to AMD, Zen 3 has a 19% higher instructions per cycle (IPC) on average than Zen 2. 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. 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 powers Ryzen 5000 mainstream desktop processors (codenamed "Vermeer") and Epyc server processors (codenamed "Milan"). 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. New Windows 11 devices must use modern device drivers which have passed the Windows Hardware Compatibility Program for Windows 11 or the latest available modern device drivers based on Declarative, Componentized, Hardware Support Apps (DCH) design principles.Zen 3 is the codename for a CPU microarchitecture by AMD, released on November 5, 2020. OEMs may use the following CPUs for new Windows 11 devices. Updates to the processor lists will occur at each subsequent general availability of Windows. It is expected that the processor list will not reflect the most current offerings from processor manufacturers between updates. Subsequently released and future generations of processors which meet the same principles will be considered as supported, even if not explicitly listed. These processors meet the design principles around security, reliability, and the minimum system requirements for Windows 11. The processors listed represent the processor models which meet the minimum floor for the supported processor generations and up through the latest processors at the time of publication.
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