diff --git a/superbench/benchmarks/micro_benchmarks/rocm_common.cmake b/superbench/benchmarks/micro_benchmarks/rocm_common.cmake
index 1d2cc3934..aea79c7aa 100644
--- a/superbench/benchmarks/micro_benchmarks/rocm_common.cmake
+++ b/superbench/benchmarks/micro_benchmarks/rocm_common.cmake
@@ -37,11 +37,35 @@ else()
     set(HIP_PATH $ENV{HIP_PATH})
 endif()
 
-# Turn off CMAKE_HIP_ARCHITECTURES Feature if cmake version is 3.21+
-if(CMAKE_VERSION VERSION_GREATER_EQUAL 3.21.0)
-    set(CMAKE_HIP_ARCHITECTURES OFF)
+# Set HIP architectures from the AMDGPU_TARGETS environment variable if available.
+# Accepts the common separators a user might pass: whitespace, ',', or ';'
+# (e.g. "gfx908 gfx90a gfx942", "gfx908,gfx90a", or "gfx908;gfx90a").
+# In this repository's micro-benchmarks, AMDGPU_TARGETS is what actually drives
+# --offload-arch selection, via ROCm's hip-config-amd.cmake and hipcc (the C++
+# compiler). CMAKE_HIP_ARCHITECTURES is set (when supported by CMake >= 3.21)
+# for compatibility with projects that enable the CMake HIP language, but is
+# not required for these CXX-only projects.
+set(_amdgpu_targets_raw "$ENV{AMDGPU_TARGETS}")
+string(STRIP "${_amdgpu_targets_raw}" _amdgpu_targets_stripped)
+# Collapse runs of any common separator (spaces, tabs, CR/LF, ',', ';') into a
+# single ';' so the result is a well-formed CMake list with no empty elements.
+string(REGEX REPLACE "[ \t\r\n,;]+" ";" HIP_ARCH_LIST "${_amdgpu_targets_stripped}")
+if(NOT HIP_ARCH_LIST STREQUAL "")
+    # Use a normal (non-cache) directory-scoped variable so we do not pollute
+    # the global CMake cache or override AMDGPU_TARGETS in nested projects.
+    # The env var is re-read on every reconfigure, so this still wins over
+    # stale state when the user changes AMDGPU_TARGETS.
+    set(AMDGPU_TARGETS ${HIP_ARCH_LIST})
+    if(CMAKE_VERSION VERSION_GREATER_EQUAL 3.21.0)
+        set(CMAKE_HIP_ARCHITECTURES ${HIP_ARCH_LIST})
+    endif()
+    message(STATUS "Using AMDGPU_TARGETS from environment: ${HIP_ARCH_LIST}")
+else()
+    if(CMAKE_VERSION VERSION_GREATER_EQUAL 3.21.0)
+        set(CMAKE_HIP_ARCHITECTURES OFF)
+    endif()
+    message(STATUS "AMDGPU_TARGETS not set (or empty), relying on hipcc auto-detection")
 endif()
-message(STATUS "CMAKE HIP ARCHITECTURES: ${CMAKE_HIP_ARCHITECTURES}")
 
 if(EXISTS ${HIP_PATH})
     # Search for hip in common locations