Cpuid intel manual

edit

• INSTRUCTION LATENCY AND THROUGHPUT. Support is indicated by CPUID, using ECX feature bit 07. Built on our 10nm SuperFin Technology, 11th Gen Intel® Core™ vPro®, Intel® Xeon® W-11000E Series, and Intel® Celeron® processors advance performance in our mid-level (45/35 and 25 watts) power range. The Intel Manual, Volume 3a lists only 3 non-privileged serializing instructions ( cpuid, iret, and rsm ), and the latter two seem to have control-flow side-effects. Consider the performance impact of this intrinsic. Improved Interface : Sensors in system tray, editable Tiger Lake H. AMD Enhanced Intel SpeedStep Technology are discr ete transitions to a new target frequency. Under File, click Save, choose a folder, and click OK. HWMonitor PRO is the extended version of HWMonitor. If the Family ID field is either 6 or 15, the model is equal to the sum of the Extended Model ID field shifted Introduction in Intel® 64 and IA-32 Processors”. Intel® 64 and IA-32 Architectures Software Developer’s Manual. Topologically, each P-core with L2$ is connected to L3$ (LLC). Behind Intel's New Random-Number GeneratorNIST SP 800-90A 5. 2. Improved the emulation of multi-threaded workloads with Intel® AMX instructions on Linux. Jun 22, 2023 · This document contains the following: Volume 1: Describes the architecture and programming environment of processors supporting IA-32 and Intel® 64 architectures. The first member of the family of Pentium 4 processors will return a 1. NOTE: Some operating systems will not complete installation when the maximum CPUID function is greater than three. Intel Corporation, Intel Processor Identification and the CPUID Instruction, Application note 485. This document is an update to the specifications contained in the documents listed in the following Affected Documents/Related Documents table. The notation 0xF2n represents the hex value of the lower 12 bits of the EAX register reported by CPUID mnemonic operands encspace cpuid 1stintercept VFMADD213PH zmm1,zmm2,zmm3/m512 EVEX AVX512-FP16 SPR VFMADD213PH xmm1,xmm2,xmm3/m128 EVEX AVX512-FP16,AVX512VL SPR Based on Table 3-12 of the Intel manual Volume 2 (number 325383-070US), there will be either one or two descriptors of data TLBs that can cache 4KB translations. EBX[11] and CPUID. The actual processor model is derived from the Model, Extended Model ID and Family ID fields. Model-specific registers (MSR) are control registers provided by the processor implementation so that system software can interact with a variety of features, including performance monitoring, checking processor status, debugging, program tracing or toggling specific CPU features. Intel ® 64 and IA-32 Architectures Software Developer’s Manual, Volume 3A: System Programming Guide NOTE: The Intel® 64 and IA-32 Architectures Software Developer's Manual consists of ten volumes: Basic Architecture , Order Number 253665; Instruction Set Reference, A-L , Order Number 253666; Instruction Set Reference, M-U , Order Number 253667; Instruction Set Reference, V , Order Number Intel® 64 and IA-32 Architectures Software Developer’s Manual. Read the product brief and infographic. cpuid(1) Intel Corporation, Intel 64 and IA-32 Architectures Software Developer's Manual Volume 2A: Instruction Set Reference, A-M, 3-180 CPUID reference. Products may also include capabilities that extend Intel AVX-512 and have distinct CPUID bits for detection. The encoding is as follows: - The least-significant byte in register EAX (register AL) indicates the number of times the CPUID instruction must be executed with an input value of 2 to get a complete description of the processor's caches and TLBs. SSD / hard disks via S. The number returned by /proc/cpuinfo is the "family" field from the CPUID instruction, which gives a vague idea of what processors are related to this one, and is really only useful for doing a table lookup to select what name to display for processors that don't support the "processor brand string" extended Jun 3, 2013 · >>To compute Displayfamily_Displaymodel you have to use "extended family" and "extended model" too. For the 80286 in real-address mode, they are always cleared. The E-core clusters connect to a shared L3$ with the P-cores. In order to correctly use the new instructions and avoid runtime crashes, applications must properly detect hardware support for the new instructions using CPUID checks. %PDF-1. On Intel 64 processors, CPUID clears the high 32 bits of the RAX/RBX/RCX/RDX registers in all modes. T. Jan 11, 2024 · The diagnostic tool checks for brand identification, verifies the processor operating frequency, tests specific processor features, and performs a stress test on the processor. ABOUT THIS MANUAL. Allows you to enable or disable Intel TurboBoost mode of the processor. CPU-Z is fully supported on Windows® 11. Intel® Secure Key Code Samples 4. For the Skylake Xeon processor, the TLB is the same as in the Skylake Client processor, which is described in more detail in the Intel Architectures Optimization Reference Manual (document 248966-045, February 2022), Table 2-15. Is there any Linux* version of the Intel Manual, Intel® Processor Identification and the CPUID. Describes NOTE: The Intel® 64 and IA-32 Architectures Software Developer's Manual consists of ten volumes: Basic Architecture , Order Number 253665; Instruction Set Reference, A-L , Order Number 253666; Instruction Set Reference, M-U , Order Number 253667; Instruction Set Reference, V , Order Number Mar 24, 2022 · It can be tricky to understand the TLB info from the CPUID instruction, and I seem to recall times when it was incorrect. This document is a compilation of device and documentation errata, specification clarifications and changes. the hex value of the lower 12 bits of the EAX register reported by CPUID. An example is listed below. See page 587 >>in the developer's manual There is a very good Application Note 485 'Intel(R) Processor Identification and the CPUID Instruction' ( May 2012 ) and try to search the Intel web-site for the document. Syntax for CPUID, CR, and MSR Values. Updated ENQCMD and ENQCMDS instructions to use this notation. Intel® 64 and IA-32 Architectures Software Developer’s Manual Volume 3A: System Programming Guide, Part 1 NOTE: The Intel® 64 and IA-32 Architectures Software Developer's Manual consists of five volumes: Basic Architecture, Order Number 253665; Instruction Set Reference A-M, Order Number 253666; Instruction Set Feb 20, 2018 · A robust, but not very efficient, way to do this is to go through the released "IA-32 Intel® Architecture Software Developer’s Manual Documentation Changes" and look at whatever features got added to the CPUID instruction in that particular document which has a year/month associated with it on the first page. NOTE: The Intel® 64 and IA-32 Architectures Software Developer's Manual consists of nine volumes: Basic Architecture , Order Number 253665; Instruction Set Reference A-M , Order Number 253666; Instruction Set Reference N-U , Order Number 253667; Instruction Set Reference V-Z , Order Number System software can determine whether a processor supports VMX operation using CPUID. There are two message schedule helper instructions each, a rounds instruction each, and an extra rounds related helper for SHA-1. When EAX is initialized to a value of ‘1’, the CPUID instruction returns the Extended Family, Extended Model, Processor Type, Family Code, Model Number and Stepping ID value in the EAX register. Updated emulation for Intel® AVX10 Architecture Specification in Granite Rapids (code name) CPU. 73. Graph Generator : Save monitoring data and generate logging graphs as bitmap files. NOTE: The Intel® 64 and IA-32 Architectures Software Developer's Manual consists of ten volumes: Basic Architecture , Order Number 253665; Instruction Set Reference, A-L , Order Number 253666; Instruction Set Reference, M-U , Order Number 253667; Instruction Set Reference, V , Order Number The Intel® 64 and IA-32 architectures software developer's manuals are now available for download via one combined volume, a four-volume set or a ten-volume set. Type command in the Windows search bar and this will bring up the 6 Application Note-016 Revised Figure 2 to include the Extended Family and Extended Model when CPUID is executed with EAX=1. In case the processor enumerated support for RTM previously, the CPUID enumeration bits for Intel TSX (CPUID. Preface. • Added notation updates to the beginn ing of Chapter 2. #include <intrin. Specification Update. cpupower-info (1) - Shows processor power related kernel or hardware configurations. See also: Chapter 3, “Instruction Set Reference, A-L,” in the Intel® 64 and IA-32 Architectures Software Developer’s Manual, Volume 2A, and Chapter 4, “Instruction Set Reference, M-U‚” in the Intel® 64 and IA-32 Architectures Software Devel- This download page contains two versions of Intel® Processor Identification Utility for Windows*. While Legacy version 6. Added section 6 which describes the Brand String. • Removed Chapter 4 “Hardware Feedback Interface”. Jun 13, 2022 · Topology. What am I missing here? May 2, 2019 · l e t n 5 I. Click the dropdown arrow next to it to bring up several useful features. Table 3 shows the values currently defined for these processors. Use a builtin instead of asm. You can also get the CPUID in Windows* using the Command Prompt application. You agree to grant Intel a non-exclusive, royalty-free Introduction in Intel® 64 and IA-32 Processors”. Type command in the Windows search bar and this will bring up the “Caching Translation Information” in Chapter 4, “Paging,” in the Intel ® 64 and IA-32 Architectures Software Developer’s Manual, Volume 3A. The Intel Corporation, Intel 64 and IA-32 Architectures Software Developer's Manual Volume 2A: Instruction Set Reference, A-M, 3-180 CPUID reference. This document is an update to the specifications contained in the Affected Documents table below. NOTE: The Intel® 64 and IA-32 Architectures Software Developer's Manual consists of ten volumes: Basic Architecture , Order Number 253665; Instruction Set Reference, A-L , Order Number 253666; Instruction Set Reference, M-U , Order Number 253667; Instruction Set Reference, V , Order Number HWMonitor is a hardware monitoring program that reads PC systems main health sensors : voltages, temperatures, fans speed. 2 indicates the model encoding is 2, n indicates it applies Oct 8, 2009 · First off, according to Volume 1 of the Intel 64 and IA-32 Architectures Software Developer's Manual, bits 12 through 15 of the FLAGS register are always set if the processor is a 8086/8088. 3, “System Flags and Fields in the EFLAGS Register,” in the Intel® 64 and IA-32 Architectures Software Developer’s Manual, Volume 3A). Jun 20, 2017 · Intel AVX-512 foundation instructions will be included in all implementations of Intel AVX-512. Note: The file name for both 32-bit and 64-bit executable is: Intel® 64 and IA-32 Architectures Software Developer’s Manual. The only thing I can guess is that the opcode is the same for 32 and 64 bit mode, so maybe the instruction is the same in both cases. : 631123, Rev. CPUID returns processor identification and feature information in the EAX, EBX, ECX, and EDX registers. Enhanced Intel SpeedStep Technology is enabled by setting IA32_MISC_ENABLE MSR, bit 16. It dumps. Intel® 64 and IA-32 Architectures Software Developer’s Manual Volume 4: Model-Specific Registers NOTE: The Intel® 64 and IA-32 Architectures Software Developer's Manual consists of ten volumes: Basic Architecture, Order Number 253665; Instruction Set Reference A-L, Order Number 253666; cdrdv2-public. • CPUID instruction updated with Hybrid information sub-leaf 1AH, SERIALIZE and TSXLDTRK support, updates to the L3 Cache Intel RDT Monitoring Ca pability Enumeration Sub-leaf, and updates to the Memory Bandwidth Allocation Enumeration Sub-leaf. Jan 29, 2018 · Also mentioning target ISA is usually a good idea, even it if also can be guessed in this case. cdrdv2-public. CPUID Signature Values of DisplayFamily_DisplayModel Page 1151 With processors that implement the CPUID instruction, they return the processor signature when they either run the CPUID instruction, or at reset. vPro Developers Community and Discussion Forum cdrdv2-public. Format: pdf. Apr 12, 2024 · Intel® Intrinsics Guide. In addition, it can read modern CPUs on-die core thermal sensors, as well has hard drives temperature via S. No. M. 28 (2008). Mainboard and chipset. The program handles the most common sensor chips, like ITE® IT87 series, most Winbond® ICs, and others. Intel ® 64 and IA-32 Architectures Software Developer’s Manual, Volume 2B: Instruction Set Reference Manual N-Z. Describes The CPUID leaves with cache information: 2 (cache descriptors, see Intel Architecture Manual for their meanings, additionally see Cyrix manual for their meanings on Cyrix processors, AMD CPUs have 0 cache descriptors), 4 (newer Intel CPUs), 0x80000005 (AMD-only), 0x80000006 (AMD-only expect L2 information which is also provided on Intel CPUs), 0x8000001D (AMD-only, used on Bulldozer CPUs, and Jun 3, 2013 · Currently that table is located in: Intel(R) 64 and IA-32 Architectures Software Developer’s Manual Volume 3 (3A, 3B & 3C): System Programming Guide Order Number: 325384-044US August 2012 CHAPTER 35 MODEL-SPECIFIC REGISTERS (MSRS) Table 35-1. • Enable CPUID Limit - This option is disabled by default. 0H. Once of these is NOTE: The Intel® 64 and IA-32 Architectures Software Developer's Manual consists of nine volumes: Basic Architecture , Order Number 253665; Instruction Set Reference A-M , Order Number 253666; Instruction Set Reference N-U , Order Number 253667; Instruction Set Reference V-Z , Order Number Enhanced Intel SpeedStep Technology are discr ete transitions to a new target frequency. Apr 18, 2012 · On Nehalem , I get 06A5(E5530) , 06C2 (X5650), not the same as manual When I read the manual carefully , I find that " The column represented by 0xF3n also applies to Intel processors with CPUID signature 0xF4n and 0xF6n. Also, the instruction is read-only (maybe this is the R in Op/En ). The EDX processor signature value after reset is equivalent to the processor signature output value in the EAX register. FIPS 140-2 6. Describes the format of the instruction and provides reference pages for instructions. 1. intel. 8 supports 12th Gen and newer processors. See Chapter 3, “Instruction Set Reference, A-L‚” of the Intel ® 64 and IA-32 Architectures Software Developer’s Manual, Volume 2A. I am not familiar with the conventions adopted and, from the table, I can't understand the syntax of the instruction. 07H. R. Jun 8, 2023 · the Intel Software Developer Manual. . Each E-core module has 4 E-cores that share L2$. 36. CPUID leaf 1FH is a preferred superset to leaf 0BH. • Added Chapter 3, “Intel® AMX Instruction Set Reference, A-Z”. The largest function num-ber of the standard function range, for a particular implementation, is returned in CPUID. "Intel(R) 64 and IA-32 Architectures Software Developers Manual, Volume 2A: "AMD CPUID Specification", Advanced Micro Devices, Rev 2. The details of these instructions can be found in Intel® 64 and IA-32 Architectures Software Developer Manuals and Intel® Advanced Vector Extensions Programming Reference manual. "Family" is an ambiguous concept. 0129 (released 02/07/2024), supports 11th Gen and older processors. The Intel ® SHA Extensions are comprised of four SHA-1 and three SHA-256 instructions. ncerning Intel products described herein. The ex tended topology enumeration leaf of CPUID (leaf 11) is the preferred interface for system topo logy enumeration for future Intel 64 processor. On reset, bit 16 of IA32_MISC_ENABLE MSR is cleared. The Intel manual uses the following different names for TLBs that may cache data access translations: Data TLB, Data TLB0, Data TLB1, DTLB, uTLB, and Shared 2nd-Level TLB. N/A. The x2APIC extension in Intel 64 architecture defines a 32-bit x2APIC ID, the CPUID instruction in future Intel 64 processors will allow software to enumerate system topology using x2APIC IDs. CHAPTER 1. cpuid overwrites registers, at the very least you need to list eax, ebx, ecx and edx as clobbers. When EAX is initialized to a value of '1', the CPUID instruction returns the Extended Family, Extended Model, Processor Type, Family Code, Model Number and Stepping ID value in the EAX register. Some workloads that benefited from Intel TSX might experience a change in performance. The smallest function number of the standard function range is Fn0000_0000. cpuid dumps detailed information about the CPU (s) gathered from the CPUID instruction, and also determines the exact model of CPU (s) from that information. Xeon. It is a compilation of device and document errata and specification clarifications and changes, and is intended for hardware system manufacturers and for software developers of applications Intel Feb 23, 2024 · Reading and Writing Model Specific Registers (MSRs) in Linux*. Sep 6, 2014 · The answer is apparently not. The 12th Gen Intel Core processor’s performance hybrid architecture combines high-performance P-cores with highly efficient E-cores in one silicon chip. : 027 You may not use or facilitate the use of this document in connection with any infringement or other legal analysis c. • CPUID instruction updated. In comparison to its classic counterpart, HWMonitor PRO adds the following features : Remote Monitoring : Watch the sensors of one or several distant PCs or Android devices using a simple TCP/IP connection. Fn0000_0000_EAX. T, and video card GPU temperature. Jul 19, 2023 · HWMonitor for Windows® ARM64 is a hardware monitoring program that reads PC systems main health sensors : voltages, temperatures, powers, currents, fans speed, utilizations, clock speeds The program handles : CPU and GPU-level hardware monitoring. Chapter 5 continues an alphabetical discussion of Intel ® 64 and IA-32 instructions (V-Z). NOTE: The Intel 64 and IA-32 Architectures Software Developer's Manual consists of four volumes: Basic Architecture , Order Number 253665; Instruction Set Reference A-Z , Order Number 325383; System Programming Guide , Order Number 325384; Model-Specific Registers, Order Number 335592. 8k 45 205 343. INTEL® 64 AND IA-32 PROCESSORS COVERED IN THIS MANUAL. CPUID EAX=1: Processor Version Information in EAX. Describes For more information, refer to CPUID Information for Intel® Processor Identification Utility. Moving on from the tabs, at the bottom of the CPU-Z window you’ll see a 'Tools' button. Intel® Secure Key Software Implementation Guide 3. 027 November 2023Intel ConfidentialDoc. Here is an example: How to save information of the processor using this application. answered Apr 24, 2014 at 22:46. D-1500 / D-1500 NS / D-1600 NS Processor Families Specification Update, May 2020 . If CPUID. HWMonitor for Windows® x86/x64 is a hardware monitoring program that reads PC systems main health sensors : voltages, temperatures, powers, currents, fans speed, utilizations, clock speeds The program handles : CPU and GPU-level hardware monitoring LPCIO chips with monitoring features (ITE® IT87 series, Winbond® and Nuvoton® ICs) memory modules with thermal sensors SSD / hard disks via HWMonitor for Windows® x86/x64 is a hardware monitoring program that reads PC systems main health sensors : voltages, temperatures, powers, currents, fans speed, utilizations, clock speeds The program handles : CPU and GPU-level hardware monitoring LPCIO chips with monitoring features (ITE® IT87 series, Winbond® and Nuvoton® ICs) memory modules with thermal sensors SSD / hard disks via Feb 11, 2021 · CPU-Z tools. Follow the steps below:-. h> and use the __cpuid() function. Introduction in Intel® 64 and IA-32 Processors”. The Intel® Processor Diagnostic Tool release 4. com Nov 22, 2023 · 11th Generation Intel® CoreTM Processor. 10. merlin2011. EBX[4]) continue to be set by default after the microcode update. This information is now in the Intel® 64 and IA-32 Architectures Software Developer’s Manual. The Intel® 64 and IA-32 Architectures Optimization Reference Manual describes how to optimize software to take advantage of the performance characteristics of IA-32 and Intel 64 architecture processors. com Intel ® 64 and IA-32 Architectures Software Developer’s Manual, Volume 2A: Instruction Set Reference Manual A-M. System software may use new TSX_FORCE_ABORT[TSX_CPUID_CLEAR] functionality to clear those bits to indicate Apr 18, 2012 · Intel processors with CPUID signature 0xF4n and 0xF6n. VMX[bit 5] = 1, then VMX operation is supported. All content is identical in each set. Jul 11, 2014 · mov eax,0xb xor ecx,ecx cpuid ; EAX = EBX = ECX = EDX = 0 I have successfully written AMD cpuinfo based on 'cpuid' instruction just before this, but intel's 0xb function just won't work. Mar 12, 2014 · 2. 9. cpupower-idle-set (1) - Utility to set cpu idle state specific kernel options. Intel® 64 and IA-32 Architectures Software Developer’s Manual Combined Volumes: 1, 2A, 2B, 2C, 3A, 3B and 3C 2. • Minor updates to Chapter 6, “Hypervisor-managed Linear Address NOTE: The Intel® 64 and IA-32 Architectures Software Developer's Manual consists of ten volumes: Basic Architecture , Order Number 253665; Instruction Set Reference, A-L , Order Number 253666; Instruction Set Reference, M-U , Order Number 253667; Instruction Set Reference, V , Order Number NOTE: The Intel® 64 and IA-32 Architectures Software Developer's Manual consists of ten volumes: Basic Architecture , Order Number 253665; Instruction Set Reference, A-L , Order Number 253666; Instruction Set Reference, M-U , Order Number 253667; Instruction Set Reference, V , Order Number Jun 22, 2023 · This document contains the following: Volume 1: Describes the architecture and programming environment of processors supporting IA-32 and Intel® 64 architectures. This field limits the maximum value the processor standard CPUID function will support. Note: The file name for both 32-bit and 64-bit executable is: The Stepping ID in Bits [3:0] indicates the revision number of that model. May 9, 2023 · ModRM:r/m (w) N/A. Serializing instruction execution guarantees that any modifications to flags, registers, and memory for previous instructions are completed before the next instruction is fetched and executed (see "Serializing Instructions" in Chapter 7 of the Intel Architecture Software Developer's Manual, Volume 3). instruction with input value of EAX = 1; F indicates the family encoding value is 15, C-4. Jun 22, 2023 · This document contains the full instruction set reference, A-Z, in one volume. 41 is compatible with multiprocessor systems. The CPU-Z‘s NOTE: The Intel 64 and IA-32 Architectures Software Developer's Manual consists of three volumes: Basic Architecture , Order Number 253665; Instruction Set Reference A-Z , Order Number 325383; System Programming Guide , Order Number 325384. This is documented in the programmer’s Apr 18, 2019 · The ID flag (bit 21) in the EFLAGS register indicates support for the CPUID instruction. When the RF flag is set, the processor ignores Intel ISR - CMU School of Computer Science Sep 5, 2023 · Intel® 64 and IA-32 Architectures Optimization Reference Manual Volume 1. Stepping ID is a product revision number assigned due to fixed errata or other changes. A. To prevent looping on an instruction breakpoint, the Intel 64 and IA-32 architectures provide the RF flag (resume flag) in the EFLAGS register (see Section 2. tried on two available intel computers with no luck. 1. Knights Landing will support three sets of capabilities to augment the foundation instructions. On processors that enumerate support for RTM, the CPUID enumeration bits for Intel TSX (CPUID. Intel Corporation, Intel Processor Identification and the CPUID Instruction, Application note 485. Loading intrinsics data This intrinsic generates a sequence of instructions, which may perform worse than a native instruction. 1:ECX. Note that the EDX processor signature value after reset is equivalent to the Jul 17, 2013 · Intel ® SHA Extension Definitions. This document contains the following: Volume 1: Describes the architecture and programming environment of processors supporting IA-32 and Intel® 64 architectures. Nov 9, 2022 · The Intel® Processor Identification Utility reports the CPUID information for the tested processor, located under the CPUID DATA tab of the tool. • Updated Figure 5-1 “Example HLAT Software Usage”. May 9, 2022 · Updated the emulation for Intel® Advanced Performance Extension (Intel® APX) in Intel® future CPU. Volume 3: Includes the full system programming guide, parts 1, 2, 3, and 4. Updated the CPUID instruction behavior for a few new CPUs. CPU-Z for Windows® x86/x64 is a freeware that gathers information on some of the main devices of your system : Processor name and number, codename, process, package, cache levels. Version 7. Volume 2: Includes the full instruction set reference, A-Z. If a software procedure can set and clear this flag, the processor executing the procedure supports the CPUID instruction. This document allows for easy navigation of the instruction set reference through functional cross-volume table of contents, references, and index. You can find most of those The CPUID instruction supports two sets or ranges of functions, standard and extended. Yes, volatile is necessary. Figure 1 shows the format of the signa- ture for the Intel486 and Pentium processor families. You can find more documents by visiting the Intel® 64 and IA-32 Architectures Software Developer Manuals. 6 %âãÏÓ 12062 0 obj > endobj 12075 0 obj >/Filter/FlateDecode/ID[85665649A2380DA08460B450CEA984A8>092724CBDC5CCF45A05B96FC44965DFA>]/Index[12062 504]/Info 在调用CPUID前EAX寄存器内的值作为其输入参数,Intel64指令集手册中称其为“叶”（Leaf)，AMD64指令集手册中称“功能码”（Function Number），执行CPUID后，返回值将被写入EAX，EBX，ECX和EDX寄存器内。此外，在使用一些特殊的输入参数时，必须同时于ECX内写入第二个输入 The CPUID instruction can be executed at any privilege level to serialize instruction execution. Rev. com Introduction in Intel® 64 and IA-32 Processors”. Nov 9, 2022 · The Intel® Processor Identification Utility reports the CPUID information for the tested processor, located under the CPUID DATA tab of the tool. The text file will be stored in the folder you have chosen. All throughput and latency data is sourced from Intel® 64 and IA-32 Architectures Software Developer Manuals . Real time measurement of each core's internal frequency, memory frequency. The notation 0xF2n represents. Memory type, size, timings, and module specifications (SPD). All instructions are 128-bit SSE based, which use XMM registers. bh xc hl fb dz hy zx bf rf bu