diff --git a/soxr/src/soxr.c b/soxr/src/soxr.c
index 948cce6..23be17e 100644
--- a/soxr/src/soxr.c
+++ b/soxr/src/soxr.c
@@ -197,10 +197,26 @@ soxr_io_spec_t soxr_io_spec(
         "xchg %%edi, %%ebx \n\t" \
         : "=a" (eax_), "=D" (ebx_), "=c" (ecx_), "=d" (edx_) \
         : "a" (type), "c" (0));
-  #elif defined _M_X64 && defined _MSC_VER
+  #elif defined _M_X64 && defined _MSC_VER && defined __clang__
     #include <intrin.h>
     #define CPUID(type, eax_, ebx_, ecx_, edx_) \
          __cpuid_count(type, 0, eax_, ebx_, ecx_, edx_)
+  #elif defined _M_X64 && defined _MSC_VER && _MSC_VER > 1500
+     void __cpuidex(int CPUInfo[4], int info_type, int ecxvalue);
+     #pragma intrinsic(__cpuidex)
+     #define CPUID(type, eax_, ebx_, ecx_, edx_) do { \
+       int regs[4]; \
+       __cpuidex(regs, type, 0); \
+       eax_ = regs[0], ebx_ = regs[1], ecx_ = regs[2], edx_ = regs[3]; \
+     } while(0)
+  #elif defined _M_X64 && defined _MSC_VER
+     void __cpuidex(int CPUInfo[4], int info_type);
+     #pragma intrinsic(__cpuidex)
+     #define CPUID(type, eax_, ebx_, ecx_, edx_) do { \
+       int regs[4]; \
+       __cpuidex(regs, type); \
+       eax_ = regs[0], ebx_ = regs[1], ecx_ = regs[2], edx_ = regs[3]; \
+     } while(0)
   #elif defined _M_IX86 && defined _MSC_VER
     #define CPUID(type, eax_, ebx_, ecx_, edx_) \
       __asm pushad \