Index: src/OFSystemInfo.h
==================================================================
--- src/OFSystemInfo.h
+++ src/OFSystemInfo.h
@@ -41,10 +41,12 @@
 @property (class, readonly, nullable, nonatomic) OFIRI *temporaryDirectoryIRI;
 @property (class, readonly, nullable, nonatomic) OFString *CPUVendor;
 @property (class, readonly, nullable, nonatomic) OFString *CPUModel;
 # if defined(OF_X86_64) || defined(OF_X86) || defined(DOXYGEN)
 @property (class, readonly, nonatomic) bool supportsMMX;
+@property (class, readonly, nonatomic) bool supports3DNow;
+@property (class, readonly, nonatomic) bool supportsEnhanced3DNow;
 @property (class, readonly, nonatomic) bool supportsSSE;
 @property (class, readonly, nonatomic) bool supportsSSE2;
 @property (class, readonly, nonatomic) bool supportsSSE3;
 @property (class, readonly, nonatomic) bool supportsSSSE3;
 @property (class, readonly, nonatomic) bool supportsSSE41;
@@ -187,10 +189,28 @@
  *
  * @return Whether the CPU supports MMX
  */
 + (bool)supportsMMX;
 
+/**
+ * @brief Returns whether the CPU supports 3DNow!.
+ *
+ * @note This method is only available on x86 and x86_64.
+ *
+ * @return Whether the CPU supports 3DNow!
+ */
++ (bool)supports3DNow;
+
+/**
+ * @brief Returns whether the CPU supports enhanced 3DNow!.
+ *
+ * @note This method is only available on x86 and x86_64.
+ *
+ * @return Whether the CPU supports enhanced 3DNow!
+ */
++ (bool)supportsEnhanced3DNow;
+
 /**
  * @brief Returns whether the CPU supports SSE.
  *
  * @warning This method only checks CPU support and assumes OS support!
  *

Index: src/OFSystemInfo.m
==================================================================
--- src/OFSystemInfo.m
+++ src/OFSystemInfo.m
@@ -703,10 +703,20 @@
 #if defined(OF_X86_64) || defined(OF_X86)
 + (bool)supportsMMX
 {
 	return (x86CPUID(1, 0).edx & (1u << 23));
 }
+
++ (bool)supports3DNow
+{
+	return (x86CPUID(0x80000001, 0).edx & (1u << 31));
+}
+
++ (bool)supportsEnhanced3DNow
+{
+	return (x86CPUID(0x80000001, 0).edx & (1u << 30));
+}
 
 + (bool)supportsSSE
 {
 	return (x86CPUID(1, 0).edx & (1u << 25));
 }

Index: tests/OFSystemInfoTests.m
==================================================================
--- tests/OFSystemInfoTests.m
+++ tests/OFSystemInfoTests.m
@@ -62,10 +62,16 @@
 	    [OFSystemInfo CPUModel]];
 
 #if defined(OF_X86_64) || defined(OF_X86)
 	[OFStdOut writeFormat: @"[OFSystemInfo] Supports MMX: %d\n",
 	    [OFSystemInfo supportsMMX]];
+
+	[OFStdOut writeFormat: @"[OFSystemInfo] Supports 3DNow!: %d\n",
+	    [OFSystemInfo supports3DNow]];
+
+	[OFStdOut writeFormat: @"[OFSystemInfo] Supports enhanced 3DNow!: %d\n",
+	    [OFSystemInfo supportsEnhanced3DNow]];
 
 	[OFStdOut writeFormat: @"[OFSystemInfo] Supports SSE: %d\n",
 	    [OFSystemInfo supportsSSE]];
 
 	[OFStdOut writeFormat: @"[OFSystemInfo] Supports SSE2: %d\n",