cpuid dumps detailed information about the CPU(s) gathered from the CPUID instruction, and also determines the exact model of CPU(s). It supports Intel, AMD, and VIA CPUs, as well as older Transmeta, Cyrix, UMC, NexGen, and Rise CPUs.
Use this tool to verify that you got the same product for which you have paid money or determine features and instruction set supported by your CPU.
This is useful to find CPU information such as:
=> vendor_id
=> version information (1/eax)
=> miscellaneous (1/ebx)
=> feature information (1/ecx)
=> processor type
=> family
=> model
=> stepping id
=> extended family
=> extended model
=> virtual machine extensions
=> brand id (1/ebx)
=> brand (0x80000004)
=> cache and TLB information (2)
=> deterministic cache parameters (4/eax), extra processor cores
=> AMD extended brand id (0x80000001/ebx)
=> Transmeta processor revision ID (0x80860001/ebx & ecx) etc
This tool dumps all information available from the CPUID instruction. The exact collection of information available varies between manufacturers and even between different CPUs from a single manufacturer.
Sample output:
$ ./cpuidOutput:
CPU:
vendor_id = "AuthenticAMD"
version information (1/eax):
processor type = primary processor (0)
family = Intel Pentium 4/Pentium D/Pentium Extreme Edition/Celeron/Xeon/Xeon MP/Itanium2, AMD Athlon 64/Athlon XP-M/Opteron/Sempron/Turion (15)
model = 0x3 (3)
stepping id = 0x2 (2)
extended family = 0x0 (0)
extended model = 0x2 (2)
(simple synth) = AMD Dual Core Opteron (Denmark JH-E6) / Athlon 64 X2 (Toledo JH-E6), 939-pin, 90nm
miscellaneous (1/ebx):
process local APIC physical ID = 0x1 (1)
cpu count = 0x2 (2)
CLFLUSH line size = 0x8 (8)
brand index = 0x0 (0)
brand id = 0x00 (0): unknown
feature information (1/edx):
x87 FPU on chip = true
virtual-8086 mode enhancement = true
debugging extensions = true
page size extensions = true
time stamp counter = true
RDMSR and WRMSR support = true
physical address extensions = true
machine check exception = true
CMPXCHG8B inst. = true
APIC on chip = true
SYSENTER and SYSEXIT = true
memory type range registers = true
PTE global bit = true
machine check architecture = true
conditional move/compare instruction = true
page attribute table = true
page size extension = true
processor serial number = false
CLFLUSH instruction = true
debug store = false
thermal monitor and clock ctrl = false
MMX Technology = true
FXSAVE/FXRSTOR = true
SSE extensions = true
SSE2 extensions = true
self snoop = false
hyper-threading / multi-core supported = true
therm. monitor = false
IA64 = false
pending break event = false
feature information (1/ecx):
PNI/SSE3: Prescott New Instructions = true
MONITOR/MWAIT = false
CPL-qualified debug store = false
VMX: virtual machine extensions = false
Enhanced Intel SpeedStep Technology = false
thermal monitor 2 = false
context ID: adaptive or shared L1 data = false
cmpxchg16b available = false
xTPR disable = false
extended processor signature (0x80000001/eax):
generation = AMD Athlon 64/Opteron/Sempron/Turion (15)
model = 0x3 (3)
stepping = 0x2 (2)
(simple synth) = AMD Dual Core Opteron (Denmark JH-E6) / Athlon 64 X2 (Toledo JH-E6 / Manchester JH-E6), 939-pin, 90nm
extended feature flags (0x80000001/edx):
x87 FPU on chip = true
virtual-8086 mode enhancement = true
debugging extensions = true
page size extensions = true
time stamp counter = true
RDMSR and WRMSR support = true
physical address extensions = true
machine check exception = true
CMPXCHG8B inst. = true
APIC on chip = true
SYSCALL and SYSRET instructions = true
memory type range registers = true
global paging extension = true
machine check architecture = true
conditional move/compare instruction = true
page attribute table = true
page size extension = true
multiprocessing capable = false
no-execute page protection = true
AMD multimedia instruction extensions = true
MMX Technology = true
FXSAVE/FXRSTOR = true
SSE extensions = true
RDTSCP = false
long mode (AA-64) = true
3DNow! instruction extensions = true
3DNow! instructions = true
extended brand id = 0xb05 (2821):
MSB = reserved (0b101100)
NN = 0x5 (5)
AMD feature flags (0x80000001/ecx):
LAHF/SAHF supported in 64-bit mode = true
CMP Legacy = true
SVM: secure virtual machine = false
AltMovCr8 = false
brand = "Dual Core AMD Opteron(tm) Processor 170"
L1 TLB/cache information: 2M/4M pages & L1 TLB (0x80000005/eax):
instruction # entries = 0x8 (8)
instruction associativity = 0xff (255)
data # entries = 0x8 (8)
data associativity = 0xff (255)
L1 TLB/cache information: 4K pages & L1 TLB (0x80000005/ebx):
instruction # entries = 0x20 (32)
instruction associativity = 0xff (255)
data # entries = 0x20 (32)
data associativity = 0xff (255)
L1 data cache information (0x80000005/ecx):
line size (bytes) = 0x40 (64)
lines per tag = 0x1 (1)
associativity = 0x2 (2)
size (Kb) = 0x40 (64)
L1 instruction cache information (0x80000005/ecx):
line size (bytes) = 0x40 (64)
lines per tag = 0x1 (1)
associativity = 0x2 (2)
size (Kb) = 0x40 (64)
L2 TLB/cache information: 2M/4M pages & L2 TLB (0x80000006/eax):
instruction # entries = 0x0 (0)
instruction associativity = L2 off (0)
data # entries = 0x0 (0)
data associativity = L2 off (0)
L2 TLB/cache information: 4K pages & L2 TLB (0x80000006/ebx):
instruction # entries = 0x200 (512)
instruction associativity = 4-way (4)
data # entries = 0x200 (512)
data associativity = 4-way (4)
L2 unified cache information (0x80000006/ecx):
line size (bytes) = 0x40 (64)
lines per tag = 0x1 (1)
associativity = 16-way (8)
size (Kb) = 0x400 (1024)
Advanced Power Management Features (0x80000007/edx):
temperature sensing diode = 0x1 (1)
frequency ID (FID) control = 0x1 (1)
voltage ID (VID) control = 0x1 (1)
thermal trip (TTP) = 0x1 (1)
thermal monitor (TM) = 0x0 (0)
software thermal control (STC) = 0x0 (0)
TscInvariant = 0x0 (0)
Physical Address and Linear Address Size (0x80000008/eax):
maximum physical address = 0x28 (40)
maximum linear address = 0x30 (48)
Logical CPU cores (0x80000008/ecx):
number of logical CPU cores - 1 = 0x1 (1)
ApicIdCoreIdSize = 0x0 (0)
SVM Secure Virtual Machine (0x8000000a/eax):
SvmRev: SVM revision = 0x0 (0)
SVM Secure Virtual Machine (0x8000000a/edx):
LBR virtualization = false
NASID: number of address space identifiers = 0x0 (0):
(multi-processing synth): multi-core (c=2)
(synth) = AMD Dual Core Opteron (Denmark JH-E6), 939-pin, 90nm Processor 170
Above output clearly indicates that how much information it can display as compare to your regular less /proc/cpuinfo command.
=> You can download RPM version or source code here.
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{ 1 comment… read it below or add one }
Hey,
Cool tool. There is also tool avilbale from Vmware but you need to burn it on CD (ISO file)
http://download3.vmware.com/software/vi/CPU_Compatibility.zip
It determines VMotion compatibility, AMD and Intel cpu revision, 32 or 64 bit instruction set and much more.
Although this product is VMWare specific but anyone can download it and use for any purpose.
Cheers
Raj