diff --git a/pcsx2/x86/microVU.h b/pcsx2/x86/microVU.h
index d5ab781448..5063a70dfd 100644
--- a/pcsx2/x86/microVU.h
+++ b/pcsx2/x86/microVU.h
@@ -209,7 +209,11 @@ struct microVU
 	__aligned16 u32 macFlag [4]; // 4 instances of mac    flag (used in execution)
 	__aligned16 u32 clipFlag[4]; // 4 instances of clip   flag (used in execution)
 	__aligned16 u32 xmmCTemp[4];     // Backup used in mVUclamp2()
+#ifdef __M_X86_64
+	__aligned16 u32 xmmBackup[16][4]; // Backup for xmm0~xmm15
+#else
 	__aligned16 u32 xmmBackup[8][4]; // Backup for xmm0~xmm7
+#endif
 
 	u32 index;        // VU Index (VU0 or VU1)
 	u32 cop2;         // VU is in COP2 mode?  (No/Yes)
diff --git a/pcsx2/x86/microVU_IR.h b/pcsx2/x86/microVU_IR.h
index 7fbeb651ea..5970abd005 100644
--- a/pcsx2/x86/microVU_IR.h
+++ b/pcsx2/x86/microVU_IR.h
@@ -224,7 +224,11 @@ struct microMapXMM
 class microRegAlloc
 {
 protected:
-	static const int xmmTotal = 7; // Don't allocate PQ?
+#ifdef __M_X86_64
+	static const int xmmTotal = 15; // PQ register is reserved
+#else
+	static const int xmmTotal = 7; // PQ register is reserved
+#endif
 	microMapXMM xmmMap[xmmTotal];
 	int         counter; // Current allocation count
 	int         index;   // VU0 or VU1
@@ -287,6 +291,10 @@ public:
 		counter = 0;
 	}
 
+	int getXmmCount()
+	{
+		return xmmTotal + 1;
+	}
 	// Flushes all allocated registers (i.e. writes-back to memory all modified registers).
 	// If clearState is 0, then it keeps cached reg data valid
 	// If clearState is 1, then it invalidates all cached reg data after write-back
diff --git a/pcsx2/x86/microVU_Misc.h b/pcsx2/x86/microVU_Misc.h
index 85f2e0be9e..3ff25f4c78 100644
--- a/pcsx2/x86/microVU_Misc.h
+++ b/pcsx2/x86/microVU_Misc.h
@@ -141,7 +141,12 @@ static const char branchSTR[16][8] = {
 #define xmmT5  xmm4 // Used for regAlloc
 #define xmmT6  xmm5 // Used for regAlloc
 #define xmmT7  xmm6 // Used for regAlloc
+#ifdef __M_X86_64
+#define xmmPQ  xmm15 // Holds the Value and Backup Values of P and Q regs
+#else
 #define xmmPQ  xmm7 // Holds the Value and Backup Values of P and Q regs
+#endif
+
 
 #define gprT1  eax // eax - Temp Reg
 #define gprT2  ecx // ecx - Temp Reg
diff --git a/pcsx2/x86/microVU_Misc.inl b/pcsx2/x86/microVU_Misc.inl
index 120e8147d3..d43ee826b2 100644
--- a/pcsx2/x86/microVU_Misc.inl
+++ b/pcsx2/x86/microVU_Misc.inl
@@ -149,7 +149,7 @@ __fi void mVUbackupRegs(microVU& mVU, bool toMemory = false, bool onlyNeeded = f
 {
 	if (toMemory)
 	{
-		for (int i = 0; i < 8; i++)
+		for (int i = 0; i < mVU.regAlloc->getXmmCount(); i++)
 		{
 			if (!onlyNeeded || mVU.regAlloc->checkCachedReg(i) || xmmPQ.Id == i)
 				xMOVAPS(ptr128[&mVU.xmmBackup[i][0]], xmm(i));
@@ -167,7 +167,7 @@ __fi void mVUrestoreRegs(microVU& mVU, bool fromMemory = false, bool onlyNeeded
 {
 	if (fromMemory)
 	{
-		for (int i = 0; i < 8; i++)
+		for (int i = 0; i < mVU.regAlloc->getXmmCount(); i++)
 		{
 			if (!onlyNeeded || mVU.regAlloc->checkCachedReg(i) || xmmPQ.Id == i)
 				xMOVAPS(xmm(i), ptr128[&mVU.xmmBackup[i][0]]);
@@ -197,13 +197,13 @@ public:
 _mVUt void __fc mVUprintRegs()
 {
 	microVU& mVU = mVUx;
-	for (int i = 0; i < 8; i++)
+	for (int i = 0; i < mVU.regAlloc->getXmmCount(); i++)
 	{
 		Console.WriteLn("xmm%d = [0x%08x,0x%08x,0x%08x,0x%08x]", i,
 			mVU.xmmBackup[i][0], mVU.xmmBackup[i][1],
 			mVU.xmmBackup[i][2], mVU.xmmBackup[i][3]);
 	}
-	for (int i = 0; i < 8; i++)
+	for (int i = 0; i < mVU.regAlloc->getXmmCount(); i++)
 	{
 		Console.WriteLn("xmm%d = [%f,%f,%f,%f]", i,
 			(float&)mVU.xmmBackup[i][0], (float&)mVU.xmmBackup[i][1],