diff --git a/perfaware/part3/listing_0144_read_unroll.asm b/perfaware/part3/listing_0144_read_unroll.asm
new file mode 100644
index 00000000..e4293015
--- /dev/null
+++ b/perfaware/part3/listing_0144_read_unroll.asm
@@ -0,0 +1,65 @@
+;  ========================================================================
+;
+;  (C) Copyright 2023 by Molly Rocket, Inc., All Rights Reserved.
+;
+;  This software is provided 'as-is', without any express or implied
+;  warranty. In no event will the authors be held liable for any damages
+;  arising from the use of this software.
+;
+;  Please see https://computerenhance.com for more information
+;
+;  ========================================================================
+
+;  ========================================================================
+;  LISTING 144
+;  ========================================================================
+
+global Read_x1
+global Read_x2
+global Read_x3
+global Read_x4
+
+section .text
+
+;
+; NOTE(casey): These ASM routines are written for the Windows
+; 64-bit ABI. They expect the count in rcx and the data pointer in rdx.
+;
+
+Read_x1:
+	align 64
+.loop:
+    mov rax, [rdx]
+    sub rcx, 1
+    jnle .loop
+    ret
+
+Read_x2:
+	align 64
+.loop:
+    mov rax, [rdx]
+    mov rax, [rdx]
+    sub rcx, 2
+    jnle .loop
+    ret
+
+Read_x3:
+    align 64
+.loop:
+    mov rax, [rdx]
+    mov rax, [rdx]
+    mov rax, [rdx]
+    sub rcx, 3
+    jnle .loop
+    ret
+
+Read_x4:
+	align 64
+.loop:
+    mov rax, [rdx]
+    mov rax, [rdx]
+    mov rax, [rdx]
+    mov rax, [rdx]
+    sub rcx, 4
+    jnle .loop
+    ret
diff --git a/perfaware/part3/listing_0145_read_unroll_main.cpp b/perfaware/part3/listing_0145_read_unroll_main.cpp
new file mode 100644
index 00000000..a1eb44be
--- /dev/null
+++ b/perfaware/part3/listing_0145_read_unroll_main.cpp
@@ -0,0 +1,105 @@
+/* ========================================================================
+
+   (C) Copyright 2023 by Molly Rocket, Inc., All Rights Reserved.
+   
+   This software is provided 'as-is', without any express or implied
+   warranty. In no event will the authors be held liable for any damages
+   arising from the use of this software.
+   
+   Please see https://computerenhance.com for more information
+   
+   ======================================================================== */
+
+/* ========================================================================
+   LISTING 145
+   ======================================================================== */
+
+/* NOTE(casey): _CRT_SECURE_NO_WARNINGS is here because otherwise we cannot
+   call fopen(). If we replace fopen() with fopen_s() to avoid the warning,
+   then the code doesn't compile on Linux anymore, since fopen_s() does not
+   exist there.
+   
+   What exactly the CRT maintainers were thinking when they made this choice,
+   I have no idea. */
+#define _CRT_SECURE_NO_WARNINGS
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <math.h>
+#include <sys/stat.h>
+
+typedef uint8_t u8;
+typedef uint32_t u32;
+typedef uint64_t u64;
+
+typedef int32_t b32;
+
+typedef float f32;
+typedef double f64;
+
+#define ArrayCount(Array) (sizeof(Array)/sizeof((Array)[0]))
+
+#include "listing_0125_buffer.cpp"
+#include "listing_0137_os_platform.cpp"
+#include "listing_0109_pagefault_repetition_tester.cpp"
+
+typedef void ASMFunction(u64 Count, u8 *Data);
+
+extern "C" void Read_x1(u64 Count, u8 *Data);
+extern "C" void Read_x2(u64 Count, u8 *Data);
+extern "C" void Read_x3(u64 Count, u8 *Data);
+extern "C" void Read_x4(u64 Count, u8 *Data);
+#pragma comment (lib, "listing_0144_read_unroll")
+
+struct test_function
+{
+    char const *Name;
+    ASMFunction *Func;
+};
+test_function TestFunctions[] =
+{
+    {"Read_x1", Read_x1},
+    {"Read_x2", Read_x2},
+    {"Read_x3", Read_x3},
+    {"Read_x4", Read_x4},
+};
+
+int main(void)
+{
+    InitializeOSPlatform();
+    
+	u64 RepeatCount = 1024*1024*1024ull;
+    buffer Buffer = AllocateBuffer(4096);
+    if(IsValid(Buffer))
+    {
+        repetition_tester Testers[ArrayCount(TestFunctions)] = {};
+        for(;;)
+        {
+            for(u32 FuncIndex = 0; FuncIndex < ArrayCount(TestFunctions); ++FuncIndex)
+            {
+                repetition_tester *Tester = &Testers[FuncIndex];
+                test_function TestFunc = TestFunctions[FuncIndex];
+                
+                printf("\n--- %s ---\n", TestFunc.Name);
+                NewTestWave(Tester, RepeatCount, GetCPUTimerFreq());
+                
+                while(IsTesting(Tester))
+                {
+                    BeginTime(Tester);
+                    TestFunc.Func(RepeatCount, Buffer.Data);
+                    EndTime(Tester);
+                    CountBytes(Tester, RepeatCount);
+                }
+            }
+        }
+    }
+    else
+    {
+        fprintf(stderr, "Unable to allocate memory buffer for testing");
+    }
+    
+    FreeBuffer(&Buffer);
+    
+    return 0;
+}
diff --git a/perfaware/part3/listing_0146_byte_read.asm b/perfaware/part3/listing_0146_byte_read.asm
new file mode 100644
index 00000000..515fae14
--- /dev/null
+++ b/perfaware/part3/listing_0146_byte_read.asm
@@ -0,0 +1,44 @@
+;  ========================================================================
+;
+;  (C) Copyright 2023 by Molly Rocket, Inc., All Rights Reserved.
+;
+;  This software is provided 'as-is', without any express or implied
+;  warranty. In no event will the authors be held liable for any damages
+;  arising from the use of this software.
+;
+;  Please see https://computerenhance.com for more information
+;
+;  ========================================================================
+
+;  ========================================================================
+;  LISTING 146
+;  ========================================================================
+
+global Read_1x2
+global Read_8x2
+
+section .text
+
+;
+; NOTE(casey): These ASM routines are written for the Windows
+; 64-bit ABI. They expect the count in rcx and the data pointer in rdx.
+;
+
+Read_1x2:
+	align 64
+.loop:
+    mov al, [rdx]
+    mov al, [rdx]
+    sub rcx, 2
+    jnle .loop
+    ret
+
+Read_8x2:
+	align 64
+.loop:
+    mov rax, [rdx]
+    mov rax, [rdx]
+    sub rcx, 2
+    jnle .loop
+    ret
+
diff --git a/perfaware/part3/listing_0147_byte_read_main.cpp b/perfaware/part3/listing_0147_byte_read_main.cpp
new file mode 100644
index 00000000..becc527e
--- /dev/null
+++ b/perfaware/part3/listing_0147_byte_read_main.cpp
@@ -0,0 +1,101 @@
+/* ========================================================================
+
+   (C) Copyright 2023 by Molly Rocket, Inc., All Rights Reserved.
+   
+   This software is provided 'as-is', without any express or implied
+   warranty. In no event will the authors be held liable for any damages
+   arising from the use of this software.
+   
+   Please see https://computerenhance.com for more information
+   
+   ======================================================================== */
+
+/* ========================================================================
+   LISTING 147
+   ======================================================================== */
+
+/* NOTE(casey): _CRT_SECURE_NO_WARNINGS is here because otherwise we cannot
+   call fopen(). If we replace fopen() with fopen_s() to avoid the warning,
+   then the code doesn't compile on Linux anymore, since fopen_s() does not
+   exist there.
+   
+   What exactly the CRT maintainers were thinking when they made this choice,
+   I have no idea. */
+#define _CRT_SECURE_NO_WARNINGS
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <math.h>
+#include <sys/stat.h>
+
+typedef uint8_t u8;
+typedef uint32_t u32;
+typedef uint64_t u64;
+
+typedef int32_t b32;
+
+typedef float f32;
+typedef double f64;
+
+#define ArrayCount(Array) (sizeof(Array)/sizeof((Array)[0]))
+
+#include "listing_0125_buffer.cpp"
+#include "listing_0137_os_platform.cpp"
+#include "listing_0109_pagefault_repetition_tester.cpp"
+
+typedef void ASMFunction(u64 Count, u8 *Data);
+
+extern "C" void Read_1x2(u64 Count, u8 *Data);
+extern "C" void Read_8x2(u64 Count, u8 *Data);
+#pragma comment (lib, "listing_0146_byte_read")
+
+struct test_function
+{
+    char const *Name;
+    ASMFunction *Func;
+};
+test_function TestFunctions[] =
+{
+    {"Read_1x2", Read_1x2},
+    {"Read_8x2", Read_8x2},
+};
+
+int main(void)
+{
+    InitializeOSPlatform();
+    
+	u64 RepeatCount = 1024*1024*1024ull;
+    buffer Buffer = AllocateBuffer(4096);
+    if(IsValid(Buffer))
+    {
+        repetition_tester Testers[ArrayCount(TestFunctions)] = {};
+        for(;;)
+        {
+            for(u32 FuncIndex = 0; FuncIndex < ArrayCount(TestFunctions); ++FuncIndex)
+            {
+                repetition_tester *Tester = &Testers[FuncIndex];
+                test_function TestFunc = TestFunctions[FuncIndex];
+                
+                printf("\n--- %s ---\n", TestFunc.Name);
+                NewTestWave(Tester, RepeatCount, GetCPUTimerFreq());
+                
+                while(IsTesting(Tester))
+                {
+                    BeginTime(Tester);
+                    TestFunc.Func(RepeatCount, Buffer.Data);
+                    EndTime(Tester);
+                    CountBytes(Tester, RepeatCount);
+                }
+            }
+        }
+    }
+    else
+    {
+        fprintf(stderr, "Unable to allocate memory buffer for testing");
+    }
+    
+    FreeBuffer(&Buffer);
+    
+    return 0;
+}