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A CPU cache is a hardware cache used by the central processing unit (CPU) of a computer to reduce the average cost (time or energy) to access data from the main memory. [1] A cache is a smaller, faster memory, located closer to a processor core, which stores copies of the data from frequently used main memory locations.
COASt, an acronym for "cache on a stick", is a packaging standard for modules containing SRAM used as an L2 cache in a computer. COASt modules look like somewhat oversized SIMM modules. These modules were somewhat popular in the Apple and PC platforms during early to mid-1990s, but with newer computers cache is built into either the CPU or the ...
Level 2 (L2) Instruction and data (shared) – 1 MiB [citation needed] [original research] in size. Best access speed is around 200 GB/s [9] Level 3 (L3) Shared cache – 6 MiB [citation needed] [original research] in size. Best access speed is around 100 GB/s [9] Level 4 (L4) Shared cache – 128 MiB [citation needed] [original research] in size.
Cache hierarchy, or multi-level cache, is a memory architecture that uses a hierarchy of memory stores based on varying access speeds to cache data. Highly requested data is cached in high-speed access memory stores, allowing swifter access by central processing unit (CPU) cores.
Cache; L1 cache: 64 KB per core (32 KB instructions + 32 KB data) L2 cache: 256 KB per core: L3 cache: 2–45 MB (shared) L4 cache: 128 MB of eDRAM (Iris Pro models only) Architecture and classification; Technology node: 22 nm : Microarchitecture: Haswell: Instruction set: x86-16, IA-32, x86-64: Extensions
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A typical CPU reads a single L2 cache line of 128 bytes from DRAM into the L2 cache, and a single L1 cache line of 64 bytes from the L2 cache into the L1 cache. Caches with a prefetch input queue or more general anticipatory paging policy go further—they not only read the data requested, but guess that the next chunk or two of data will soon ...
Intel announced low-power mobile Comet Lake-U CPUs on August 21, 2019, [5] H-series mobile CPUs on April 2, 2020, [6] desktop Comet Lake-S CPUs April 30, 2020, [7] and Xeon W-1200 series workstation CPUs on May 13, 2020. [8] Comet Lake processors and Ice Lake 10 nm processors are together branded as the Intel "10th Generation Core" family. [9]