https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107364
--- Comment #2 from Thomas Capricelli <orzel at freehackers dot org> --- Sure, easy chopin /tmp # ./cpuid __get_cpuid(0): eax=1, ebx=1953391939, ecx=1936487777, edx=1215460705 __get_cpuid(1): eax=1683, ebx=0, ecx=0, edx=58765629 I't not better in hexa ? : __get_cpuid(0): eax=1, ebx=746e6543, ecx=736c7561, edx=48727561 __get_cpuid(1): eax=693, ebx=0, ecx=0, edx=380b13d (what would be a lot less easy, is to recompile gcc.. it takes days on this machine) there's also this command available: CPU 0: vendor_id = "CentaurHauls" version information (1/eax): processor type = primary processor (0) family = 0x6 (6) model = 0x9 (9) stepping id = 0x3 (3) extended family = 0x0 (0) extended model = 0x0 (0) (family synth) = 0x6 (6) (model synth) = 0x9 (9) (simple synth) = VIA C3 / Eden ESP 7000/8000/10000 (Nehemiah C5XL), .13um miscellaneous (1/ebx): process local APIC physical ID = 0x0 (0) maximum IDs for CPUs in pkg = 0x0 (0) CLFLUSH line size = 0x0 (0) brand index = 0x0 (0) brand id = 0x00 (0): unknown feature information (1/edx): x87 FPU on chip = true VME: virtual-8086 mode enhancement = false DE: debugging extensions = true PSE: page size extensions = true TSC: time stamp counter = true RDMSR and WRMSR support = true PAE: physical address extensions = false MCE: machine check exception = false CMPXCHG8B inst. = true APIC on chip = false SYSENTER and SYSEXIT = false MTRR: memory type range registers = true PTE global bit = true MCA: machine check architecture = false CMOV: conditional move/compare instr = true PAT: page attribute table = false PSE-36: page size extension = false PSN: processor serial number = false CLFLUSH instruction = false DS: debug store = false ACPI: thermal monitor and clock ctrl = false MMX Technology = true FXSAVE/FXRSTOR = true SSE extensions = true SSE2 extensions = false SS: self snoop = false hyper-threading / multi-core supported = false TM: therm. monitor = false IA64 = false PBE: pending break event = false feature information (1/ecx): PNI/SSE3: Prescott New Instructions = false PCLMULDQ instruction = false DTES64: 64-bit debug store = false MONITOR/MWAIT = false CPL-qualified debug store = false VMX: virtual machine extensions = false SMX: safer mode extensions = false Enhanced Intel SpeedStep Technology = false TM2: thermal monitor 2 = false SSSE3 extensions = false context ID: adaptive or shared L1 data = false SDBG: IA32_DEBUG_INTERFACE = false FMA instruction = false CMPXCHG16B instruction = false xTPR disable = false PDCM: perfmon and debug = false PCID: process context identifiers = false DCA: direct cache access = false SSE4.1 extensions = false SSE4.2 extensions = false x2APIC: extended xAPIC support = false MOVBE instruction = false POPCNT instruction = false time stamp counter deadline = false AES instruction = false XSAVE/XSTOR states = false OS-enabled XSAVE/XSTOR = false AVX: advanced vector extensions = false F16C half-precision convert instruction = false RDRAND instruction = false hypervisor guest status = false extended processor signature (0x80000001/eax): generation = 0x0 (0) model = 0x0 (0) stepping = 0x0 (0) (simple synth) = unknown extended feature flags (0x80000001/edx): x87 FPU on chip = false virtual-8086 mode enhancement = false debugging extensions = false page size extensions = false time stamp counter = false RDMSR and WRMSR support = false physical address extensions = false machine check exception = false CMPXCHG8B inst. = false APIC on chip = false SYSCALL and SYSRET instructions = false memory type range registers = false global paging extension = false machine check architecture = false conditional move/compare instruction = false page attribute table = false page size extension = false multiprocessing capable = false AMD multimedia instruction extensions = false MMX Technology = false extended MMX = false SSE extensions = false AA-64 = false 3DNow! instruction extensions = false 3DNow! instructions = false brand = "VIA Nehemiah" L1 TLB/cache information: 2M/4M pages & L1 TLB (0x80000005/eax): instruction # entries = 0x0 (0) instruction associativity = 0x0 (0) data # entries = 0x0 (0) data associativity = 0x0 (0) L1 TLB/cache information: 4K pages & L1 TLB (0x80000005/ebx): instruction # entries = 0x80 (128) instruction associativity = 0x8 (8) data # entries = 0x80 (128) data associativity = 0x8 (8) L1 data cache information (0x80000005/ecx): line size (bytes) = 0x20 (32) lines per tag = 0x1 (1) associativity = 0x4 (4) size (KB) = 0x40 (64) L1 instruction cache information (0x80000005/edx): line size (bytes) = 0x20 (32) lines per tag = 0x1 (1) associativity = 0x4 (4) 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 = 0x0 (0) instruction associativity = L2 off (0) data # entries = 0x0 (0) data associativity = L2 off (0) L2 unified cache information (0x80000006/ecx): line size (bytes) = 0x20 (32) lines per tag = 0x1 (1) associativity = 16-way (8) size (KB) = 0x40 (64) L3 cache information (0x80000006/edx): line size (bytes) = 0x0 (0) lines per tag = 0x0 (0) associativity = L2 off (0) size (in 512KB units) = 0x0 (0) 0xc0000001 0x00: eax=0x00000000 extended feature flags (0xc0000001/edx): alternate instruction set = true alternate instruction set enabled = false random number generator = true random number generator enabled = true LongHaul MSR 0000_110Ah = true FEMMS = false advanced cryptography engine (ACE) = false advanced cryptography engine (ACE)enabled = false montgomery multiplier/hash (ACE2) = false montgomery multiplier/hash (ACE2) enabled = false padlock hash engine (PHE) = false padlock hash engine (PHE) enabled = false padlock montgomery mult. (PMM) = false padlock montgomery mult. (PMM) enabled = false (multi-processing synth) = none (multi-processing method) = Generic leaf 1 no multi-threading (uarch synth) = VIA C3, .13um (synth) = VIA C3 / Eden ESP 7000/8000/10000 (Nehemiah C5XL), .13um