Versions

8.14.10.0390	1.85%
8.14.10.0381	9.26%
8.14.10.0381	0.93%
8.14.10.0370	8.33%
8.14.10.0370	0.93%
8.14.10.0363	10.19%
8.14.10.0363	0.93%
8.14.10.0363	2.78%
8.14.10.0363	0.93%
8.14.10.0363	0.93%
8.14.10.0363	1.85%
8.14.10.0363	0.93%
8.14.10.0359	4.63%
8.14.10.0359	2.78%
8.14.10.0355	0.93%
8.14.10.0355	1.85%
8.14.10.0350	0.93%
8.14.10.0346	0.93%
8.14.10.0346	0.93%
8.14.10.0342	1.85%
8.14.10.0342	0.93%
8.14.10.0342	0.93%
8.14.10.0342	0.93%
8.14.10.0338	0.93%
8.14.10.0330	0.93%
8.14.10.0330	2.78%
8.14.10.0330	1.85%
8.14.10.0330	1.85%
8.14.10.0330	0.93%
8.14.10.0325	0.93%
8.14.10.0325	2.78%
8.14.10.0312	0.93%
8.14.10.0312	3.70%
8.14.10.0312	2.78%
8.14.10.0312	0.93%
8.14.10.0312	0.93%
8.14.10.0308	1.85%
8.14.10.0308	0.93%
8.14.10.0299	0.93%
8.14.10.0279	0.93%
8.14.10.0275	2.78%
8.14.10.0275	1.85%
8.14.10.0275	0.93%
8.14.10.0263	0.93%
8.14.10.0259	1.85%
8.14.10.0250	2.78%
8.14.10.0250	0.93%
8.14.10.0250	0.93%
8.14.10.0244	1.85%
8.14.10.0241	0.93%

atiumd6a.dll has 50 known versions, the most recent one is 8.14.10.0390. The average file size is about 3.7 MB. It is an authenticode code-signed executable issued to AMD PMP-PE CB Code Signer v20120511 by the certification authority AMD PVP Certificate Authority v1. This is a .NET Common Language Runtime (CLR) assembly.

Radeon Video Acceleration is the universal driver for AMD and ATI video cards with DirectX acceleration support.