diff --git a/Extras/RigidBodyGpuPipeline/readme.txt b/Extras/RigidBodyGpuPipeline/readme.txt
index 13694214e..914da0eb7 100644
--- a/Extras/RigidBodyGpuPipeline/readme.txt
+++ b/Extras/RigidBodyGpuPipeline/readme.txt
@@ -1,4 +1,5 @@
 This GPU rigid body pipeline is only tested under Windows with the latest GPUs and GPU/OpenCL drivers.
+AMD Radeon 5970, preferably Tahiti 7970 with Catalyst 12.x or NVIDIA 470 with latest drivers (at least 290.53)
 
 Click on the build/vs2010.bat file to generation Visual Studio project files.
 It requires either the AMD APP SDK 2.6 or later, or NVIDIA CUDA SDK.