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[[File:10682-icon-precision-boost-140x140.png|50px|left]] | [[File:10682-icon-precision-boost-140x140.png|50px|left]] | ||
− | ''' | + | '''Precision Boost''' - A feature that provides the ability to adjust the frequency of the processor on-the-fly given sufficient headroom (e.g. thermal limits based on the sensory data collected by a network of sensors across the chip), i.e. "Turbo Frequency". Precision Boost adjusts in 25 MHz increments, considerably more granular when compared to Intel's {{intel|Turbo Boost}} which operates at 100 MHz bin increments. Having more granular boost increments in theory could allow it to clock slightly higher than competitor's products without reaching thermal limits (e.g., complex workloads involving {{x86|AVX2}}). |
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[[File:amd zen xfr.jpg|300px|right]] | [[File:amd zen xfr.jpg|300px|right]] | ||
[[File:10682-icon-frequency-range-140x140.png|50px|left]] | [[File:10682-icon-frequency-range-140x140.png|50px|left]] | ||
− | ''' | + | '''Extended Frequency Range''' ('''XFR''') - This is a fully automated solution that attempts to allow higher upper limit on the maximum frequency based on the cooling technique used (e.g. air, water, LN2). Whenever the chip senses that it's suitable enough for a given frequency, it will attempt to increase that limit further. XFR is partially enabled on all models, providing an extra +50 MHz frequency boost whenever possible. For 'X' models, full XFR is enabled providing twice the headroom of up to +100 MHz. |
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− | The AMD presentation slide on the right depicts a normal use case for the {{amd|Ryzen 7}} {{amd|Ryzen 7/1800X|1800X}}. When under normal workload, the processor will operate at around its base frequency of 3.6 GHz. When | + | The AMD presentation slide on the right depicts a normal use case for the {{amd|Ryzen 7}} {{amd|Ryzen 7/1800X|1800X}}. When under normal workload, the processor will operate at around its base frequency of 3.6 GHz. When expericing heavier workload, Precision Boost will kick in increment it as necessary up to its maximum frequency of 4 GHz. With adequate cooling, {{amd|XFR}} will bump it up an additional 100 MHz. When light workload get experienced, the processor will reduce its frequency. As Pure Power senses the workload and CPU state, it can also drastically downclock the CPU when appropriate (such as in the graph during mostly idle). |
<div style="text-align: center;">[[File:ryzen-xfr-1800x example.jpg|700px]]</div> | <div style="text-align: center;">[[File:ryzen-xfr-1800x example.jpg|700px]]</div> | ||
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Facts about "Zen - Microarchitectures - AMD"
codename | Zen + |
core count | 4 +, 6 +, 8 +, 16 +, 24 +, 32 + and 12 + |
designer | AMD + |
first launched | March 2, 2017 + |
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 | 14 nm (0.014 μm, 1.4e-5 mm) + |