diff --git a/Sources/Plasma/CoreLib/hsMatrix44.cpp b/Sources/Plasma/CoreLib/hsMatrix44.cpp
index 81eba463..9c4053f3 100644
--- a/Sources/Plasma/CoreLib/hsMatrix44.cpp
+++ b/Sources/Plasma/CoreLib/hsMatrix44.cpp
@@ -47,6 +47,10 @@ You can contact Cyan Worlds, Inc. by email legal@cyan.com
 #include "hsStream.h"
 #include <math.h>
 
+#ifdef HAVE_SSE
+#   include <smmintrin.h>
+#endif
+
 static hsMatrix44 myIdent = hsMatrix44().Reset();
 const hsMatrix44& hsMatrix44::IdentityMatrix() { return myIdent; }
 
@@ -92,6 +96,18 @@ void hsMatrix44::DecompRigid(hsScalarTriple &translate, hsQuat &rotate) const
     rotate.QuatFromMatrix44(*this);
 }
 
+#ifdef HAVE_SSE
+#   define MULTBEGIN(i) \
+        xmm[0]   = _mm_loadu_ps(fMap[i]);
+#   define MULTCELL(i, j) \
+        xmm[1]   = _mm_set_ps(b.fMap[3][j], b.fMap[2][j], b.fMap[1][j], b.fMap[0][j]); \
+        xmm[j+2] = _mm_mul_ps(xmm[0], xmm[1]);
+#   define MULTFINISH(i) \
+        xmm[6] = _mm_hadd_ps(xmm[2], xmm[3]); \
+        xmm[7] = _mm_hadd_ps(xmm[4], xmm[5]); \
+        xmm[1] = _mm_hadd_ps(xmm[6], xmm[7]); \
+        _mm_storeu_ps(c.fMap[i], xmm[1]);
+#endif
 
 hsMatrix44 hsMatrix44::operator*(const hsMatrix44& b) const
 {
@@ -108,6 +124,37 @@ hsMatrix44 hsMatrix44::operator*(const hsMatrix44& b) const
     if( b.fFlags & hsMatrix44::kIsIdent )
         return *this;
 
+#ifdef HAVE_SSE
+    __m128 xmm[8];
+
+    MULTBEGIN(0);
+    MULTCELL(0, 0);
+    MULTCELL(0, 1);
+    MULTCELL(0, 2);
+    MULTCELL(0, 3);
+    MULTFINISH(0);
+
+    MULTBEGIN(1);
+    MULTCELL(1, 0);
+    MULTCELL(1, 1);
+    MULTCELL(1, 2);
+    MULTCELL(1, 3);
+    MULTFINISH(1);
+
+    MULTBEGIN(2);
+    MULTCELL(2, 0);
+    MULTCELL(2, 1);
+    MULTCELL(2, 2);
+    MULTCELL(2, 3);
+    MULTFINISH(2);
+
+    MULTBEGIN(3);
+    MULTCELL(3, 0);
+    MULTCELL(3, 1);
+    MULTCELL(3, 2);
+    MULTCELL(3, 3);
+    MULTFINISH(3);
+#else
     c.fMap[0][0] = (fMap[0][0] * b.fMap[0][0]) + (fMap[0][1] * b.fMap[1][0]) + (fMap[0][2] * b.fMap[2][0]) + (fMap[0][3] * b.fMap[3][0]);
     c.fMap[0][1] = (fMap[0][0] * b.fMap[0][1]) + (fMap[0][1] * b.fMap[1][1]) + (fMap[0][2] * b.fMap[2][1]) + (fMap[0][3] * b.fMap[3][1]);
     c.fMap[0][2] = (fMap[0][0] * b.fMap[0][2]) + (fMap[0][1] * b.fMap[1][2]) + (fMap[0][2] * b.fMap[2][2]) + (fMap[0][3] * b.fMap[3][2]);
@@ -127,6 +174,7 @@ hsMatrix44 hsMatrix44::operator*(const hsMatrix44& b) const
     c.fMap[3][1] = (fMap[3][0] * b.fMap[0][1]) + (fMap[3][1] * b.fMap[1][1]) + (fMap[3][2] * b.fMap[2][1]) + (fMap[3][3] * b.fMap[3][1]);
     c.fMap[3][2] = (fMap[3][0] * b.fMap[0][2]) + (fMap[3][1] * b.fMap[1][2]) + (fMap[3][2] * b.fMap[2][2]) + (fMap[3][3] * b.fMap[3][2]);
     c.fMap[3][3] = (fMap[3][0] * b.fMap[0][3]) + (fMap[3][1] * b.fMap[1][3]) + (fMap[3][2] * b.fMap[2][3]) + (fMap[3][3] * b.fMap[3][3]);
+#endif
 
     return c;
 }
diff --git a/Sources/Plasma/NucleusLib/pnSceneObject/plCoordinateInterface.cpp b/Sources/Plasma/NucleusLib/pnSceneObject/plCoordinateInterface.cpp
index 643834be..1c64314d 100644
--- a/Sources/Plasma/NucleusLib/pnSceneObject/plCoordinateInterface.cpp
+++ b/Sources/Plasma/NucleusLib/pnSceneObject/plCoordinateInterface.cpp
@@ -380,6 +380,7 @@ plProfile_CreateTimer("   CIRecalcT", "Object", CIRecalcT);
 plProfile_CreateTimer("   CIDirtyT", "Object", CIDirtyT);
 plProfile_CreateTimer("   CISetT", "Object", CISetT);
 
+#ifndef HAVE_SSE
 static inline hsMatrix44 IMatrixMul34(const hsMatrix44& lhs, const hsMatrix44& rhs)
 {
     hsMatrix44 ret;
@@ -440,6 +441,7 @@ static inline hsMatrix44 IMatrixMul34(const hsMatrix44& lhs, const hsMatrix44& r
 
     return ret;
 }
+#endif // HAVE_SSE
 
 void plCoordinateInterface::IRecalcTransforms()
 {
@@ -447,7 +449,7 @@ void plCoordinateInterface::IRecalcTransforms()
     plProfile_BeginTiming(CIRecalcT);
     if( fParent )
     {
-#if 0
+#ifdef HAVE_SSE
         fLocalToWorld = fParent->GetLocalToWorld() * fLocalToParent;
         fWorldToLocal = fParentToLocal * fParent->GetWorldToLocal();
 #else
diff --git a/Sources/Plasma/PubUtilLib/plDrawable/plDrawableSpans.cpp b/Sources/Plasma/PubUtilLib/plDrawable/plDrawableSpans.cpp
index a3199627..3fc19b2a 100644
--- a/Sources/Plasma/PubUtilLib/plDrawable/plDrawableSpans.cpp
+++ b/Sources/Plasma/PubUtilLib/plDrawable/plDrawableSpans.cpp
@@ -416,7 +416,7 @@ hsBool plDrawableSpans::IBoundsInvalid(const hsBounds3Ext& bnd) const
 }
 
 //// SetTransform ////////////////////////////////////////////////////////////
-
+#ifndef HAVE_SSE
 static inline hsMatrix44 IMatrixMul34(const hsMatrix44& lhs, const hsMatrix44& rhs)
 {
     hsMatrix44 ret;
@@ -477,6 +477,7 @@ static inline hsMatrix44 IMatrixMul34(const hsMatrix44& lhs, const hsMatrix44& r
 
     return ret;
 }
+#endif
 
 #ifdef MF_TEST_UPDATE
 plProfile_CreateCounter("DSSetTrans", "Update", DSSetTrans);
@@ -520,13 +521,13 @@ plDrawable& plDrawableSpans::SetTransform( uint32_t index, const hsMatrix44& l2w
 #endif // MF_TEST_UPDATE
             for( i = 0; i < spans->GetCount(); i++ )
             {
-#if 0
+#ifdef HAVE_SSE
                 fLocalToWorlds[ (*spans)[ i ] ] = l2w * fLocalToBones[ (*spans)[ i ] ];
                 fWorldToLocals[ (*spans)[ i ] ] = fBoneToLocals[ (*spans)[ i ] ] * w2l;
 #else
                 fLocalToWorlds[ (*spans)[ i ] ] = IMatrixMul34(l2w, fLocalToBones[ (*spans)[ i ] ]);
                 fWorldToLocals[ (*spans)[ i ] ] = IMatrixMul34(fBoneToLocals[ (*spans)[ i ] ], w2l);
-#endif
+#endif // HAVE_SSE
             }
 #ifdef MF_TEST_UPDATE
             plProfile_EndTiming(DSMatTransT);