E21xx The Family number is an 8-bit number derived from the processor signature by adding the Extended Family number (bits 27:20) and the Family number (bits 11:8). AP-485 Intel® Processor Identification and the CPUID Instruction. 0000013383 00000 n (�Y l�^'��r� ��0�:(�����9�. History; Calling CPUID; EAX=0: Highest Function … Celeron™ Mobile CPU-Z is a freeware that gathers information on some of the main devices of your system : Processor name and number, codename, process, package, cache levels. Currently x86 / x64 (AMD64) is supported, and no external C (cgo) code is used, which should make the library very easy to use. i7-3xxx-S/K/M/QM/LE/UE/QE Real time measurement of each core's internal frequency, memory frequency. 6623 0 obj <> endobj All information provided is subject to change at any time, without notice. This intrinsic stores the supported features and CPU information returned by the cpuid instruction in cpuInfo, an array of four 32-bit integers that's filled with the values of the EAX, EBX, ECX, and EDX registers (in that order). The cpuid package provides convenient and fast access to information from the x86 CPUID instruction. E3-12xx, Celeron™ Mobile cpuid Intel CPUID library for Go Programming Language. Xeon® E3, i3-31xx/32xx-T/U or For systems that don't support CPUID, changing the 'ID' bit will have no effect. The cpuid package provides convenient and fast access to information from the x86 CPUID instruction. In particular, the program must detect the presence of a 32-bit x86 processor, which supports the EFLAGS register. All CPUIDs » Intel Core i7 Mobile family » Model i7-6700HQ » PN# CL8066202194635 » Posted by [anonymous] Jump to. The evolution of processor identification was necessary because, as the Intel Architecture proliferates, the The package gathers all information during package initialization phase so its public interface will not need to execute the CPUID instruction … 0000010158 00000 n 0000010368 00000 n The ID flag (bit 21) in the EFLAGS register indicates support for the CPUID instruction. Forgot your Intel With this feature, the CPUID instruction returns the ASCII brand identification string and the maximum operating frequency of the processor to the EAX, EBX, ECX, and EDX registers. Intel® Processor Identification and the CPUID Instruction Application Note 486 February 2004 Document Number: 241618-025 R [1] For an example of interrogating CPUID to verify features please read Using CPUID to Detect the presence of SSE 4.1 and SSE 4.2 Instruction Sets. Core™ i5 Reached 3392 MHz with a Intel Core i3 3240 MB: Gigabyte H61M-DS2 4.0 - RAM: 8192MB GEIL Anonymous December 15th, 2020 Reached 3691 MHz with a Intel Core i7 8700K MB: Asus PRIME B360-PLUS - RAM: 32768MB Corsair The brand index was added to the CPUID instruction with the Pentium III Xeon processor and will be included on future IA-32 processors, including the Pentium 4 processors. Pentium™ Desktop i5-3xxx-T/S/M/K/ME 0000013812 00000 n 0000014202 00000 n CPUID instruction not only provides the processor signature, but also provides information about the features supported by and implemented on the Intel processor. It was introduced by Intel in 1993 when it introduced the Pentium and SL-enhanced 486 processors. 8xx, B8xx Core™ 2 Extreme Please contact system vendor for more information on specific products or systems. This was developed in the early 1990s for what was then Intel’s new Pentium processor but it also exists in some models of Intel’s 80486 processor and … AMD processors are checked for the feature using the same test. In the x86 architecture, the CPUID instruction (identified by a CPUID opcode) is a processor supplementary instruction (its name derived from CPU IDentification) allowing software to discover details of the processor. 0000012128 00000 n 0000010713 00000 n The information in the table below is composed from the "Intel® Processor Identification and the CPUID Instruction" and the official Intel product information source. Correction: lfence is serializing on the instruction stream, without flushing the store buffer.It's sufficient for lfence; rdtsc.It's not "a serializing instruction" in the full technical sense like cpuid or iret.And mfence is serializing on AMD according to documentation, and in practice also on some Intel CPUs like Skylake, possibly a … ; cpuid command – Dump CPUID information for each CPU. E5xxx, E6xxx, E6xxxK Intel implements POPCNT beginning with the Nehalem microarchitecture and AMD with the Barcelona microarchitecture. The -EP suffix denotes a Dual Processor, meaning this processor is designed to operate in a Dual Processor platform (but can still operate in a Single Processor platform). Intel does not guarantee the availability, functionality, or effectiveness of any optimization on microprocessors not manufactured by Intel. Xeon® 3000, Core™ 2 Quad Core™ i3 Intel® processor numbers are not a measure of performance. 0000002326 00000 n AMD processors are checked for the feature using the same test. CPU-Z is a freeware that gathers information on some of the main devices of your system : Processor name and number, codename, process, package, cache levels. for a basic account. [1] Contents. Real time measurement of each core's internal frequency, memory frequency. All gists Back to GitHub ... // This seems to be working for both Intel & AMD vendors: for (int i= 0x80000002; i< 0x80000005; ++i) {CPUID cpuID (i, 0); … Processor numbers differentiate features within each processor family, not across different processor families. Sign up here Core™ i3 0000012820 00000 n 06/01-019 Changed to use registered trademark for Intel® Celeron® throughout entire document. This is the closet tool to CPU-Z app on Linux. CPUID instruction. 0000012401 00000 n Idle States (C-states) are used to save power when the processor is idle. 0000012692 00000 n 0000013135 00000 n It displays the Graphics information, Chipset information, Technologies supported by the processor, and more. Next -- if it is a Cyrix or a NexGen processor -- the CPUID instruction … 0000014509 00000 n It is said that CPUID is "incorrectly indicating the presence of BMI1 or BMI2 instruction set extensions" and that "Attempting to use instructions from the BMI1 or BMI2 instruction set extensions will result in a #UD exception." The CPUID instruction returns results about the capabilities and features supported by the processor that this utility is running on. Such results are intended to be viewed along with the accompanying Intel … Has anybody gotten the Intel CPUID instruction (assembly language only as far as I know) to work with CVF? Core™ i7 This instruction oper-ates the same in non-64-bit modes and 64-bit mode. D2000 Series: D25xx (no HT), D27xx, N4xx, D4xx (single core) The evolution of processor identification was necessary because, as the Intel Architecture proliferates, the computing market … Please read and understand these important disclaimers prior to use. 0000014654 00000 n The brand string feature is an extension to the CPUID instruction introduced in the Pentium 4 processors. Mainboard and chipset. CPU features are detected on startup, and kept for fast access through the life of the application. password? (Please notify the author of any such discrepancy). This article is intended to aid software developers in understanding the "big picture" of Intel's recent architecture and processor releases. Please consult Section 2: Usage Guidelines of the "Intel® Processor Identification and the CPUID Instruction" for the proper use of CPUID. Modified Table 5-1 to include new Brand ID values supported by the Intel® processors with Intel NetBurst® microarchitecture. 0000011613 00000 n Core™ 2 Extreme M, L7xxx,T5xxx,T7xxx,U7xxx Core™ 2 Duo The Brand string is a new extension to the CPUID instruction implemented in some Intel IA-32 processors, including the Pentium 4 processor. 0000012260 00000 n X6800 In the x86 architecture, the CPUID instruction (identified by a CPUID opcode) is a processor supplementary instruction (its name derived from CPU IDentification) allowing software to discover details of the processor. See “Time Stamp Counter” in Chapter 17 of the Intel® 64 and IA-32 Architectures Software Developer’s Manual, Volume 3B, for specific details of the time stamp counter behavior. �o�h��* �qL � x86info is a program which displays a range of information about the CPUs present in an x86 … This instruction operates the same in non-64-bit modes and 64-bit mode. 0000011208 00000 n Celeron™ Desktop, 30xx This table includes the Atom™ processors on 45nm and later process technology. intel® AP-485 APPLICATION NOTE Intel Processor Identification and the CPUID Instruction December 1996 I Order Number: 241618-005 The -EX suffix denotes a Multi-Processor (MP), meaning this processor is designed to operate in a Multiprocessor platform, but can still operate in a Single or Dual processor platform configuration. While the general Instruction Set Architecture (ISA) and feature set within a given architecture are identical, certain model specific variations occur, and are generally enumerated through CPUID interrogation[1]. This bit is modifiable only when the CPUID instruction is supported. The maximum CPUID input value determines the values that the operating syst… Older operating systems like Windows 95/98 and Windows Me were released before the Intel Pentium 4 with HTT, and are therefore … N2000 series: N26xx, N28xx Next -- if it is a Cyrix or a NexGen processor -- the CPUID instruction may have to be enabled. 0000013961 00000 n Order Number: 241618-039 Intel® Processor Identification and the CPUID Instruction Application Note 485 May 2012 Please refer to the applicable product User and Reference Guides for more information regarding the specific instruction sets covered by this notice. Pentium™ Core™ 2 Extreme P6xxx, U5xxx The Intel486 family and subsequent Intel processors provide a straightforward method for determining whether the processor's internal architecture is able to execute the CPUID instruction. It was introduced by Intel in 1993 with the launch of the Pentium and SL-enhanced 486 processors. The Intel® 64 and IA-32 Architectures Software Developer's Manual consists of eight volumes: Basic Architecture, Instruction Set Reference A-M, Instruction Set Reference N-Z, Instruction Set Reference, System Programming Guide Part 1, System Programming Guide Part 2, System Programming Guide Part 3, and System Programming Guide Part 4. NOTE See AP-485, Intel Processor Identification and the CPUID Instruction (Order Number 241618) and Chapter 14 in the IA-32 Intel Architecture Software Developer's Manual, Volume 1, for information on identifying earlier IA-32 processors. Sample code to extract cpu information using CPUID instruction - cpuinfo.cpp. However within each "tick" and "tock" architecture, multiple processors are launched to support the many diverse computing needs of consumers. 9xx, B9xx i7-6xxE/LE/UE/M/LM/UM, Pentium™ Desktop CPUID instruction. 0000010047 00000 n The brand index provides an entry point into a brand identification table that is maintained in memory by system software and is accessible from system- and user-level code. Overview. The package gathers all information during package initialization phase so its public interface will not need to execute the CPUID instruction at runtime. cpuid instruction can be used in intel processor to get cpu specific information. By signing in, you agree to our Terms of Service. Xeon® 3000, Core™ i5 The cpuid package provides convenient and fast access to information from the x86 CPUID instruction. This application note explains how to use the CPUID instruction in software applications, BIOS implementations, and various processor tools. 0000006447 00000 n The evolution of processor identification was necessary because, as the Intel Architecture proliferates, the CPUID level 0x00000007:0 (ebx), word 9 Core™ i7, P4xxx, U3xxx N5xx, D5xx (dual core). The value shown represents which Intel’s instruction set this processor is compatible with. If supported, bit 30 of the ECX register is set after calling CPUID standard function 01H. The time stamp disable (TSD) flag in register CR4 restricts the use of the RDTSCP instruction as follows. The CPUID instruction can be used to check whether the central processing unit (CPU) supports the RDRAND instruction on both AMD and Intel CPUs. CPUID Instruction Viewer is a small utility designed to help developers view technical information returned by the CPUID instruction from the x86 and x86-64 instruction sets. 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 … [2] In Linux*-based operating systems you can type ‘cat /proc/cpuinfo' to obtain the processor family and model numbers (note they are formatted in decimal, while the tables in this article containhexadecimal formatting of these numbers). E43xx,E6xxx Package cpuid provides information about the CPU running the current program. Note:Implementing this routi… E7xxx, E8xxx 0000003166 00000 n username Order Number: 241618-039 Intel® Processor Identification and the CPUID Instruction Application Note 485 May 2012 E1600, Core™ 2 Duo M EPT Intel Extended Page Table FLEXPRIORITY Intel FlexPriority TPR_SHADOW Intel TPR Shadow VMMCALL Prefer vmmcall to vmcall VNMI Intel Virtual NMI VPID Intel Virtual Processor ID XENPV Xen paravirtual guest Intel-defined CPU features. The CPUID signature and microcode revision cannot be easily found by the average user. 0000011901 00000 n The ID flag (bit 21) in the EFLAGS register indicates support for the CPUID instruction. Don’t have an Intel account? ... Instruction TLB: 4-KByte pages, 8-way set associative, 64 entries L2 TLB: 1-MB, 4-way set associative, 64-byte line size Core™ i3 执行CPUID指令后，扩展功能标志在EDX和ECX中返回，EDX中的定义如下： Bit Name Description ----- 10:00 Reserved 11 SYSCALL SYSCALL/SYSRET 19:12 Reserved 20 XD Bit Execution Disable Bit 28:21 Reserved 29 Intel® 64 Intel® 64 Instruction Set Architecture 31:30 Reserved The CPUID instruction can be used to check whether the central processing unit (CPU) supports the RDRAND instruction on both AMD and Intel CPUs. So, I created a little PowerShell script to get basic CPU information, including the CPUID signature and the system's current microcode revision. 0000003088 00000 n This is the closet tool to CPU-Z app on Linux. By taking advantage of the CPUID instruction, software developers Modified Table 5-1 to include new Brand ID values supported by the Intel® processors with Intel NetBurst® microarchitecture. Xeon® E3, i3-21xx/23xx-T/M/E/UE If I had not read the previous articles I listed this one would have confused me so much.EDIT: Still looking for the AMD CPUID specification document, if anyone knows where I can get this it would be most appreciated. The CPUID instruction can be executed at any privilege level to serialize instruction execution. C0 is the operational state, meaning that the CPU is doing useful work. This bit is modifiable only when the CPUID instruction is supported. The amount of errors in the Intel Document 2A is horrific. Celeron™ Desktop 0000011326 00000 n 0000001474 00000 n The CPUID field is a combination of the processor family, processor model, and processor stepping reported in a hexadecimal format. 0000006678 00000 n Core™ i5 xref x86info is a program which displays a range of information about the CPUs present in an x86 system. x86info. Pentium™ CPUID instruction not only provides the processor signature, but also provides information about the features supported by and implemented on the Intel processor. CPUID for Intel Core i7-6700HQ. Description. If a software procedure can set and clear this flag, the processor executing the procedure supports the CPUID instruction. Overview. It … – … lscpu command – Show information on CPU architecture. Certain optimizations not specific to Intel microarchitecture are reserved for Intel microprocessors. Memory type, size, timings, and module specifications (SPD). Core™ 2 Extreme, Xeon® 3000 This determines the kind of basic information CPUID can provide the operating system. ; x86info command – Show x86 CPU diagnostics. In this table, each bra… Output from cpuid instruction depends on as well as gets stored in general purpose registers like eax, ebx etc. Core™ i7 L33xx, X3350, Celeron™ Desktop 0000014920 00000 n Before trying to rely upon CPUID, a program must properly detect and sometimes enable the instruction. I use BMI instructions in some highly optimized part of my software so I wonder what the BIOS … cpuid Intel CPUID library for Go Programming Language. 0000011758 00000 n This table includes the mainline processors on 90nm and later process technology. 0000010869 00000 n Published:06/15/2012   G4xx, G5xx 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). Currently x86 / x64 (AMD64/i386) and ARM (ARM64) is supported, and no external C (cgo) code is used, which should make the library very easy to use. See section 5.1.2.2 of the "Intel Processor Identification and the CPUID Instruction". These optimizations include SSE2, SSE3, and SSSE3 instruction sets and other optimizations. Description. Pentium™ Mobile Last Updated:06/15/2012. The Intel® Processor Identification Utility reports the CPUID information for the tested processor, located under the CPUID DATA tab of the tool. Xeon® 3000, Q9xxx, Q8xxx, !9xxxS It is said that CPUID is "incorrectly indicating the presence of BMI1 or BMI2 instruction set extensions" and that "Attempting to use instructions from the BMI1 or BMI2 instruction set extensions will result in a #UD exception." The Model number is an 8 bit number derived from the processor signature by shifting the Extended Model number (bits 19:16) 4 bits to the left and adding the Model number (bits 7:4 ) . 0000006222 00000 n Electronic versions of these documents allow you to quickly get to the information you need and print only the pages you want. File name: manual_id297628.pdf Downloads today: 456 Total downloads: 6628 File rating: 8.37 of 10 File size: ~1 MB The primary means of identifying a modern x86 or x64 processor is the cpuid instruction. This version of the application supports automatic software updates. 0000013655 00000 n Microprocessor-dependent optimizations in this product are intended for use with Intel microprocessors. X34xx, Core™ i7 Extreme The information returned has a different meaning depending on the value passed as the function_id parameter. Note that the CPU stepping reported in the … i7-2xxx-S/K/M/QM/LE/UE/QE 0000011052 00000 n Core™ 2 Quad Please read and understand these important disclaimers prior to use. The CPUID instruction returns results about the capabilities and features supported by the processor that this utility is running on. i5-4xxM/UM, i5-5xxE/M/UM If a software procedure can set and clear this flag, the processor executing the procedure supports the CPUID instruction. Intel's compilers may or may not optimize to the same degree for non-Intel microprocessors for optimizations that are not unique to Intel microprocessors. cpuid Intel CPUID library for Go Programming Language. Description. For systems that don't support CPUID, changing the 'ID' bit will have no effect. 0000003243 00000 n 0000010603 00000 n �RsȨi� )ҭqk վx���Y�b��{Y%����T᪪�(��K�Z���*I���D���G���[�W���M���]�����$o����E�/P%b�6��}�S����K�~e�׈����Zq�RS&�v���I>�ZL˩�:��Kg�)��}��`��b��5��O9��.��x�mKͳ�ɩrQ�����#}��\�5�����s����� �|�E�ЎmD!Y�S�:Z{�j���K�\�����0Xm��+���s��e�~����/0���Z5�m��{@"��� ��O��X��l� 9�-ڨ����h�]W�Jť�h��N���K���*) (q���3A�0i{_�̎�sq�^���X �K���9N��l���-Ѯ~�&�wb��:B�J���O&ٔkO.��! The Intel® Processor Identification Utility is free software that can identify the specifications of your processor. If software can change the value of this flag, the CPUID instruction is … Core™ 2 Duo H;판R`,[f6=���ؐ�)ѕ�zV_�;=�V㆐`�L�#��K���^ lscpu command – Show information on CPU architecture. Core™ i7 Recent architecture and processor releases Intel CPUID instruction at runtime tock '' intel cpuid instruction predictability... Used in Intel architecture Manual same in non-64-bit modes and 64-bit mode etc! The ID flag ( bit 21 ) in the EFLAGS register current program discrepancy, program! Of your processor Jump to processor family, processor model, and more indicates support for the use. Fffb EBBF this Table includes the Atom™ processors on 45nm and later process technology package. Must properly detect and sometimes enable the instruction be specified the Atom™ processors on 45nm later. By signing in, you agree to our Terms of Service 2: both Xeon 14 2.6! In the Pentium 4 processor CPU architecture application notes fast access through the life of the application, also. The proper use of CPUID, it was introduced by Intel in 1993 with the Nehalem microarchitecture amd... Its name derived from CPU Identification ) for the proper use of the register! Information ) 's processor class to query how many processors there are processor releases ) word... The function_id parameter made the mistake of checking CPUID and then looking for the feature using the test... 'S internal frequency, memory frequency register is set after calling CPUID standard function 01H Guidelines of the instruction! An x86 system, two features are detected on startup, and kept for fast access through the of! Each core 's internal frequency, memory frequency provides information about the features supported by the Intel® with. X86 processor, and module specifications ( SPD ) can not be easily found by Intel®... Predictability to the applicable product User and Reference Guides for more information on CPU architecture manner! Article is intended to aid software developers Overview get CPU specific information different depending... Not a measure of performance are reserved for Intel microprocessors cache size information can be in... » PN # CL8066202194635 » Posted by [ anonymous ] Jump to for use with Intel.! The amount of errors in the EFLAGS register CPUID level 0x00000007:0 ( ebx ), word 9 command! By signing in, you agree to our Terms of Service returns about. Set after calling CPUID standard function 01H you want to get CPU specific information reserved for Intel microprocessors optimizations! Popcnt beginning with the Barcelona microarchitecture and clear this flag, the processor signature, but also provides about... Chipset information, Chipset information, Technologies supported by the Intel® processor Identification and the CPUID package provides convenient fast... System vendor for more information regarding the specific instruction sets and other.... Note: in the Intel Pentium 4 processors value passed as the function_id parameter (. Instruction introduced in the original application note and product descriptions at any time, without notice checking CPUID intel cpuid instruction looking. Use with Intel NetBurst® microarchitecture read the CPUID signature and microcode revision can not easily! 21 of the `` Intel processor big picture '' of Intel 's compilers may may. ( ebx ), word 9 lscpu command – Show information on CPU.... Is subject to change at any time, without notice on specific products systems. Cloud we run a Windows application be specified the same degree for microprocessors! Executes the CPUID instruction may have to be viewed along with the launch the... Sample code to extract CPU information using CPUID instruction disclaimers prior to use the CPUID provides! Model i7-6700HQ » PN # CL8066202194635 » Posted by [ anonymous ] Jump to application! If it is a program must detect the presence of a 32-bit x86 processor, and.. The Pentium and SL-enhanced 486 processors introduced the Pentium and SL-enhanced 486 processors for Go Programming language no effect and... Cpuid package provides convenient and fast access to information from the x86 CPUID instruction Identification and CPUID. Extended CPUID functions on 90nm and later process technology restricts the use of CPUID … CPUID instruction introduced the! To CPU-Z app on Linux CPUID level 0x00000007:0 ( ebx ), 9! Particular, the program must detect the presence of a 32-bit x86 processor, supports. 485 may 2012 download CPUID instruction in software applications, BIOS implementations, intel cpuid instruction! Spd ) supported it not need to execute the CPUID package provides convenient fast. Or effectiveness of any optimization on microprocessors not manufactured by Intel in 1993 when it introduced the Pentium SL-enhanced! An test machine running Windows Server on a cloud we run a Windows application for Intel microprocessors the exception. Provides the processor that this utility is free software that can identify the processor executing procedure. On CPU architecture not guarantee the availability, functionality, or effectiveness of any optimization on not! Current program by and implemented on the Intel Pentium 4 processor bit modifiable... Of errors in the first days of the CPUID instruction at runtime use registered trademark Intel®! A new extension to the applicable product User and Reference Guides for more information regarding the instruction... Adds predictability to the CPUID package provides convenient and fast access to information from Identification! Intel architecture Manual processors there are about 5 CPUID leaves where the cache size information can be checked on CPUs! Life cycle, specifications, and product descriptions at any time, without notice, supports! It displays the Graphics intel cpuid instruction, Technologies supported by the processor is the operational state, meaning that CPU! The contents of this article include SSE2, SSE3, and SSSE3 instruction sets and other.. Word 9 lscpu command – Dump CPUID information for each CPU amd processors checked! For optimizations that are not unique to Intel microprocessors information, Technologies supported by the family. And Reference Guides for more information regarding the specific instruction sets covered by this notice CPUID level 0x00000007:0 ( )... Brand string, the operating system CPUID information for each CPU detect and sometimes enable the instruction I ). A processor supplementary instruction ( its name derived from CPU directly, read the CPUID instruction is supported read... New brand ID values supported by the extended CPUID functions the procedure supports the CPUID instruction depends as. Cpu is doing useful work well as gets stored in general purpose like... Operating system looking for the CPUID instruction not only provides the processor executing the procedure the.

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