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Architecture Fabrication (nm) Family Release Date Code name Model Group Cores SMT Clock rate () Bus Speed & Type [a] Cache Socket Memory Controller Features L1 L2
AMD64 (also variously referred to by AMD in their literature and documentation as “AMD 64-bit Technology” and “AMD x86-64 Architecture”) was created as an alternative to the radically different IA-64 architecture designed by Intel and Hewlett-Packard, which was backward-incompatible with IA-32, the 32-bit version of the x86 architecture.
It is intended as an extensible architecture; the first accelerator implemented is called tile matrix multiply unit (TMUL). [5] [6] In Intel Architecture Instruction Set Extensions and Future Features revision 46, published in September 2022, a new AMX-FP16 extension was documented. This extension adds support for half-precision floating-point ...
Multi-core, L4 cache on certain low and ultra low power models (Kaby Lake-U and Kaby Lake-Y), Intel Sunny Cove 2019 14–20 Multicore, 2-way multithreading, massive OoOE engine, 5 wide superscalar/5 issue. Intel Cypress Cove 2021 14 multicore, 5 wide superscalar/6 issues, massive OoOE engine, big core design. Intel Willow Cove 2020 Multicore, SMT
AMD was the first to introduce the instructions that now form Intel's BMI1 as part of its ABM (Advanced Bit Manipulation) instruction set, then later added support for Intel's new BMI2 instructions. AMD today advertises the availability of these features via Intel's BMI1 and BMI2 cpuflags and instructs programmers to target them accordingly. [2]
CPUID model numbers are 60h-6Fh, later updated revisions have model numbers 70h-7Fh. AMD Zen – family of microarchitectures. The successor to Bulldozer. Included in the Ryzen and Epyc CPU lines. AMD Zen Family 17h – first generation Zen architecture based on 14 nm process. First AMD architecture to implement simultaneous multithreading and ...
Some Intel CPUs (Xeon Foster MP, some Pentium 4, and some Nehalem and later Intel Core processors) and AMD CPUs (starting from Zen) are also capable of simultaneous multithreading with two threads per core (Xeon Phi has four threads per core). Some Intel CPUs support transactional memory .
On the x86-64 platform, a total of seven memory models exist, [7] as the majority of symbol references are only 32 bits wide, and if the addresses are known at link time (as opposed to position-independent code). This does not affect the pointers used, which are always flat 64-bit pointers, but only how values that have to be accessed via ...