diff --git a/src/collectives/device/common.h b/src/collectives/device/common.h
index de1e6d84ec..aa4d8f7e32 100644
--- a/src/collectives/device/common.h
+++ b/src/collectives/device/common.h
@@ -11,7 +11,7 @@
 #include "collectives.h"
 #include "devcomm.h"
 
-#if defined(__gfx908__)
+#if defined(__gfx908__) || defined(__gfx940__) || defined(__gfx941__) || defined(__gfx942__)
 #define COLL_UNROLL 2
 #else
 #define COLL_UNROLL 4
diff --git a/src/collectives/device/sendrecv.h b/src/collectives/device/sendrecv.h
index 5c5b5b72ed..7e3cff2664 100644
--- a/src/collectives/device/sendrecv.h
+++ b/src/collectives/device/sendrecv.h
@@ -58,8 +58,14 @@ struct RunWork<ncclFuncSendRecv, T, RedOp, NCCL_ALGO_RING, NCCL_PROTO_SIMPLE> {
         }
 #endif
 
+#if defined(__gfx940__) || defined(__gfx941__) || defined(__gfx942__)
+        reduceCopy<COLL_UNROLL*2, RedOp, T, 0,1,1, 0,1,1, /*PreOpSrcs=*/0>
+          (tid, nthreads, 0, nullptr, false, 1, &buff, 1, &recvBuff, count);
+#else
         reduceCopy<COLL_UNROLL, RedOp, T, 0,1,1, 0,1,1, /*PreOpSrcs=*/0>
           (tid, nthreads, 0, nullptr, false, 1, &buff, 1, &recvBuff, count);
+#endif
+
 #if defined(ENABLE_NPKIT) && defined(ENABLE_NPKIT_EVENT_PRIM_SIMPLE_REDUCE_OR_COPY_MULTI_EXIT)
         if (isNpKitThread) {
           NpKit::CollectGpuEvent(NPKIT_EVENT_PRIM_SIMPLE_REDUCE_OR_COPY_MULTI_EXIT, count*sizeof(T), 0, NPKIT_GET_GPU_TIMESTAMP(),
@@ -204,7 +210,7 @@ struct RunWork<ncclFuncSendRecv, T, RedOp, NCCL_ALGO_RING, NCCL_PROTO_SIMPLE> {
       } else {
 #if defined(__gfx90a__)
         runRecv<ProtoSimple<1,1,8>>(tid, nthreads, group, args);
-#elif defined(__gfx908__)
+#elif defined(__gfx908__) || defined(__gfx940__) || defined(__gfx941__) || defined(__gfx942__)
         runRecv<ProtoSimple<1,1,4>>(tid, nthreads, group, args);
 #else
         runRecv<ProtoSimple<1,1>>(tid, nthreads, group, args);
@@ -216,7 +222,7 @@ struct RunWork<ncclFuncSendRecv, T, RedOp, NCCL_ALGO_RING, NCCL_PROTO_SIMPLE> {
       } else {
 #if defined(__gfx90a__)
         runSend<ProtoSimple<1,1,8>>(tid, nthreads, group, args);
-#elif defined(__gfx908__)
+#elif defined(__gfx908__) || defined(__gfx940__) || defined(__gfx941__) || defined(__gfx942__)
         runSend<ProtoSimple<1,1,4>>(tid, nthreads, group, args);
 #else
         runSend<ProtoSimple<1,1>>(tid, nthreads, group, args);