diff --git a/FEXCore/Source/Interface/Core/OpcodeDispatcher.h b/FEXCore/Source/Interface/Core/OpcodeDispatcher.h
index f1a6c43a0..59a0f7479 100644
--- a/FEXCore/Source/Interface/Core/OpcodeDispatcher.h
+++ b/FEXCore/Source/Interface/Core/OpcodeDispatcher.h
@@ -1029,6 +1029,8 @@ public:
   Ref AVX128_PSIGNImpl(size_t ElementSize, Ref Src1, Ref Src2);
   template<size_t ElementSize>
   void AVX128_VPSIGN(OpcodeArgs);
+  template<size_t ElementSize>
+  void AVX128_UCOMISx(OpcodeArgs);
 
   // End of AVX 128-bit implementation
 
diff --git a/FEXCore/Source/Interface/Core/OpcodeDispatcher/AVX_128.cpp b/FEXCore/Source/Interface/Core/OpcodeDispatcher/AVX_128.cpp
index caadbd387..9e45c5021 100644
--- a/FEXCore/Source/Interface/Core/OpcodeDispatcher/AVX_128.cpp
+++ b/FEXCore/Source/Interface/Core/OpcodeDispatcher/AVX_128.cpp
@@ -69,10 +69,10 @@ void OpDispatchBuilder::InstallAVX128Handlers() {
     {OPD(1, 0b10, 0x2D), 1, &OpDispatchBuilder::AVX128_CVTFPR_To_GPR<4, true>},
     {OPD(1, 0b11, 0x2D), 1, &OpDispatchBuilder::AVX128_CVTFPR_To_GPR<8, true>},
 
-    // TODO: {OPD(1, 0b00, 0x2E), 1, &OpDispatchBuilder::UCOMISxOp<4>},
-    // TODO: {OPD(1, 0b01, 0x2E), 1, &OpDispatchBuilder::UCOMISxOp<8>},
-    // TODO: {OPD(1, 0b00, 0x2F), 1, &OpDispatchBuilder::UCOMISxOp<4>},
-    // TODO: {OPD(1, 0b01, 0x2F), 1, &OpDispatchBuilder::UCOMISxOp<8>},
+    {OPD(1, 0b00, 0x2E), 1, &OpDispatchBuilder::AVX128_UCOMISx<4>},
+    {OPD(1, 0b01, 0x2E), 1, &OpDispatchBuilder::AVX128_UCOMISx<8>},
+    {OPD(1, 0b00, 0x2F), 1, &OpDispatchBuilder::AVX128_UCOMISx<4>},
+    {OPD(1, 0b01, 0x2F), 1, &OpDispatchBuilder::AVX128_UCOMISx<8>},
 
     // TODO: {OPD(1, 0b00, 0x50), 1, &OpDispatchBuilder::MOVMSKOp<4>},
     // TODO: {OPD(1, 0b01, 0x50), 1, &OpDispatchBuilder::MOVMSKOp<8>},
@@ -901,4 +901,23 @@ void OpDispatchBuilder::AVX128_VPSIGN(OpcodeArgs) {
                           [this](size_t _ElementSize, Ref Src1, Ref Src2) { return AVX128_PSIGNImpl(_ElementSize, Src1, Src2); });
 }
 
+template<size_t ElementSize>
+void OpDispatchBuilder::AVX128_UCOMISx(OpcodeArgs) {
+  const auto SrcSize = Op->Src[0].IsGPR() ? GetGuestVectorLength() : GetSrcSize(Op);
+
+  auto Src1 = AVX128_LoadSource_WithOpSize(Op, Op->Dest, Op->Flags, false);
+
+  RefPair Src2 {};
+
+  // Careful here, if the source is from a GPR then we want to load the full 128-bit lower half.
+  // If it is memory then we only want to load the element size.
+  if (Op->Src[0].IsGPR()) {
+    Src2 = AVX128_LoadSource_WithOpSize(Op, Op->Src[0], Op->Flags, false);
+  } else {
+    Src2.Low = LoadSource_WithOpSize(FPRClass, Op, Op->Src[0], SrcSize, Op->Flags);
+  }
+
+  Comiss(ElementSize, Src1.Low, Src2.Low);
+}
+
 } // namespace FEXCore::IR