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User asked about checking for cpuid features that weren't supported by _WinAPI_IsProcessorFeaturePresent() I researched it a bit and found that 'Andreik' executed some asm on the fly to get vendorID which quite frankly is amazing So I ran with it and created a function that is more general purpose and good for x86 and x64 #include <String.au3> #include <Memory.au3> Test(); Func Test() Local $sFeat1D = "" Local $aFeat1D[32] = ["FPU","VME","DE","PSE","TSC","MSR","PAE","MCE", _ "CX8","APIC","?","SEP","MTRR","PGE","MCA","CMOV", _ "PAT","PSE36","PSN","CLFSH","?","DS","ACPI","MMX", _ "FXSR","SSE","SSE2","SS","HTT","TM","IA64","PBE"] Local $iEdx = CpuID(0x00000001)[3] For $i = 0 to 31 if Get_BitGroup_Dword($iEdx, $i, $i) = 1 Then $sFeat1D &= $aFeat1D[$i] & " " Next Local $sFeat1C = "" Local $aFeat1C[32] = ["SSE3","PCLMULQDQ","DTES64","MONITOR","DS-CPL","VMX","SMX","EST", _ "TM2","SSSE3","CNTX-ID","SDBG","FMA","CX16","XTPR","PDCM", _ "?","PCID","DCA","SSE4.1","SSE4.2","X2APIC","MOVBE","POPCNT", _ "TSC-DEADLINE","AES","XSAVE","OSXSAVE","AVX","F16C","RDRND","HYPERVISOR"] Local $iEcx = CpuID(0x00000001)[2] For $i = 0 to 31 if Get_BitGroup_Dword($iEcx, $i, $i) = 1 Then $sFeat1C &= $aFeat1C[$i] & " " Next MsgBox(0, "CpuId", CpuId_Vendor() & @CRLF & CpuId_Processor_Brand() & @cRLF & $sFeat1D & @cRLF & $sFeat1C) EndFunc ;---------------------------------------------------------------------------- Func Get_BitGroup_Dword($iDword, $iLsb, $iMsb) Local $iVal1 = BitShift($iDword, $iLsb) ;>> Local Const $iMask = 0xFFFFFFFF Local $iVal2 = BitNOT(BitShift($iMask, ($iLsb-$iMsb-1))) ;~<< Return BitAND($iVal1, $iVal2) EndFunc Func RevBinStr($val) Local $rev For $n = BinaryLen($val) To 1 Step -1 $rev &= Hex(BinaryMid($val, $n, 1)) Next Return BinaryToString("0x" & $rev) EndFunc Func CpuId($iLeaf, $iSubLeaf = 0) Local $aE[4] = [0, 0, 0, 0] Local $aCPUID = __Cpuid_Get_Leaf(BitAND($iLeaf, 0xFFFF0000)) ;need to get max first If @error or $aCPUID[0] < $iLeaf Then Return SetError(1, @error, $aE) Return __Cpuid_Get_Leaf($iLeaf, $iSubLeaf) EndFunc Func CpuId_Vendor() Local $aCPUID = __Cpuid_Get_Leaf(0x0) Return RevBinStr($aCPUID[1]) & RevBinStr($aCPUID[3]) & RevBinStr($aCPUID[2]) EndFunc Func CpuId_Processor_Brand() Local $sPBS = "NOT SUPPORT" Local $aCPUID = __Cpuid_Get_Leaf(0x80000000) ;need to get max extended value first If $aCPUID[0] < 0x80000004 Then Return SetError(1, 0, $sPBS) $aCPUID = __Cpuid_Get_Leaf(0x80000002) $sPBS = RevBinStr($aCPUID[0]) & RevBinStr($aCPUID[1]) & RevBinStr($aCPUID[2]) & RevBinStr($aCPUID[3]) $aCPUID = __Cpuid_Get_Leaf(0x80000003) $sPBS &= RevBinStr($aCPUID[0]) & RevBinStr($aCPUID[1]) & RevBinStr($aCPUID[2]) & RevBinStr($aCPUID[3]) $aCPUID = __Cpuid_Get_Leaf(0x80000004) $sPBS &= RevBinStr($aCPUID[0]) & RevBinStr($aCPUID[1]) & RevBinStr($aCPUID[2]) & RevBinStr($aCPUID[3]) Return StringStripWS($sPBS, 7) EndFunc Func CpuId_Signature_Info() Local $aRet[6] = [0, 0, 0, 0, 0 ,0] Local Enum $eStep = 0, $eModel, $eFamily, $eType, $eExtModel, $eExtFamily Local $aCPUID = __Cpuid_Get_Leaf(0x00000000) ;need to get max id value first If $aCPUID[0] < 0x00000001 Then Return SetError(1, 0, $aRet) $aCPUID = __Cpuid_Get_Leaf(0x00000001) Local $iEax = $aCPUID[0] $aRet[$eStep] = Get_BitGroup_Dword($iEax, 0, 3) $aRet[$eModel] = Get_BitGroup_Dword($iEax, 4, 7) $aRet[$eFamily] = Get_BitGroup_Dword($iEax, 8, 11) $aRet[$eType] = Get_BitGroup_Dword($iEax, 12, 13) $aRet[$eExtModel] = Get_BitGroup_Dword($iEax, 16, 19) $aRet[$eExtFamily] = Get_BitGroup_Dword($iEax, 20, 27) Return $aRet EndFunc Func __Cpuid_Get_Leaf($iLeaf, $iSubLeaf = 0) Local Const $sCode32 = "0x" & _ ; use32 "55" & _ ; push ebp "89E5" & _ ; mov ebp, esp "53" & _ ; push ebx "8B4508" & _ ; mov eax, [ebp + 08] ;$iLeaf "8B4D0C" & _ ; mov ecx, [epb + 12] ;$iSubLeaf "31DB" & _ ; xor ebx, ebx ; set ebx = 0 "31D2" & _ ; xor edx, edx ; set edx = 0 "0FA2" & _ ; cpuid "8B6D10" & _ ; mov ebp, [ebp + 16] ;ptr int[4] "894500" & _ ; mov [ebp + 00], eax "895D04" & _ ; mov [edi + 04], ebx "894D08" & _ ; mov [edi + 08], ecx "89550C" & _ ; mov [edi + 12], edx "5B" & _ ; pop ebx "5D" & _ ; pop ebp "C3" ; ret Local Const $sCode64 = "0x" & _ ; use 64 "53" & _ ; push rbx "89C8" & _ ; mov eax, ecx ;$ileaf "89D1" & _ ; mov ecx, edx ;$iSubleaf "31DB" & _ ; xor ebx, ebx "31D2" & _ ; xor edx, edx "0FA2" & _ ; cpuid "67418900" & _ ; mov [r8d], eax ;ptr int[4] "6741895804" & _ ; mov [r8d + 04], ebx "6741894808" & _ ; mov [r8d + 08], ecx "674189500C" & _ ; mov [r8d + 12], edx "5B" & _ ; pop rbx "C3" ; ret Local Const $sCode = @AutoItX64 ? $sCode64 : $sCode32 Local Const $iSize = BinaryLen($sCode) Local $aE_X[4] = [0, 0, 0, 0] Local $iErr Do $iErr = 1 Local $pBuffer = _MemVirtualAlloc(0, $iSize, BitOR($MEM_COMMIT, $MEM_RESERVE), $PAGE_EXECUTE_READWRITE) If $pBuffer = 0 Then ExitLoop $iErr = 2 DllStructSetData(DllStructCreate("BYTE[" & $iSize & "]", $pBuffer), 1, $sCode) If @error Then ExitLoop $iErr = 3 Local $tRet = DllStructCreate("int EAX;int EBX;int ECX;int EDX;") If @error Then ExitLoop $iErr = 4 Local $aRet = DllCallAddress("uint:cdecl", $pBuffer, "int", Int($iLeaf), "int", Int($iSubLeaf), "ptr", DllStructGetPtr($tRet)) If @error Then ExitLoop $iErr = 0;Success? Until(True) _MemVirtualFree($pBuffer, $iSize, $MEM_DECOMMIT) ConsoleWrite($iErr <> 0 ? "Error " & $iErr & @CRLF : Hex($aRet[0], 8) & " Leaf: 0x" & Hex($iLeaf, 8) & " SubLeaf: 0x" & Hex($iSubLeaf, 8) & @CRLF) For $i = 0 To $iErr <> 0 ? -1 : UBound($aE_X) - 1 $aE_X[$i] = "0x" & Hex(DllStructGetData($tRet, $i + 1)) ConsoleWrite("E" & Chr(65 + $i) & "X: " & $aE_X[$i] & @CRLF) Next Return SetError($iErr, @error, $aE_X) EndFunc Most of the processor features can be checked with CPUID(0xXXXXXXXX) and using GET_BitGroup_Dword($iE_X, $iBitpos, $iBitpos) as shown in the example I broke the weirder ones out into their own specialized functions