diff --git a/gpu/amd_linux.go b/gpu/amd_linux.go
index b049de0c..cbbdf030 100644
--- a/gpu/amd_linux.go
+++ b/gpu/amd_linux.go
@@ -140,7 +140,7 @@ func AMDGetGPUInfo() []GpuInfo {
 		}
 
 		if int(major) < RocmComputeMin {
-			slog.Warn(fmt.Sprintf("amdgpu too old gfx%d%d%d", major, minor, patch), "gpu", gpuID)
+			slog.Warn(fmt.Sprintf("amdgpu too old gfx%d%d%x", major, minor, patch), "gpu", gpuID)
 			continue
 		}
 
@@ -266,7 +266,7 @@ func AMDGetGPUInfo() []GpuInfo {
 				}
 				slog.Debug("rocm supported GPUs", "types", supported)
 			}
-			gfx := fmt.Sprintf("gfx%d%d%d", gpuInfo.Major, gpuInfo.Minor, gpuInfo.Patch)
+			gfx := fmt.Sprintf("gfx%d%d%x", gpuInfo.Major, gpuInfo.Minor, gpuInfo.Patch)
 			if !slices.Contains[[]string, string](supported, gfx) {
 				slog.Warn("amdgpu is not supported", "gpu", gpuInfo.ID, "gpu_type", gfx, "library", libDir, "supported_types", supported)
 				// TODO - consider discrete markdown just for ROCM troubleshooting?
diff --git a/gpu/amd_windows.go b/gpu/amd_windows.go
index 1bca3e10..dfa7e974 100644
--- a/gpu/amd_windows.go
+++ b/gpu/amd_windows.go
@@ -149,13 +149,16 @@ func AMDGetGPUInfo() []GpuInfo {
 			}
 		}
 		if patch != "" {
-			gpuInfo.Patch, err = strconv.Atoi(patch)
+			// Patch rev is hex; e.g. gfx90a
+			p, err := strconv.ParseInt(patch, 16, 0)
 			if err != nil {
 				slog.Info("failed to parse version", "version", gfx, "error", err)
+			} else {
+				gpuInfo.Patch = int(p)
 			}
 		}
 		if gpuInfo.Major < RocmComputeMin {
-			slog.Warn(fmt.Sprintf("amdgpu [%s] too old gfx%d%d%d", gpuInfo.ID, gpuInfo.Major, gpuInfo.Minor, gpuInfo.Patch))
+			slog.Warn(fmt.Sprintf("amdgpu [%s] too old gfx%d%d%x", gpuInfo.ID, gpuInfo.Major, gpuInfo.Minor, gpuInfo.Patch))
 			continue
 		}