The 7450 is an OEM-only card, so the drivers can only come from your system manufacturer. Since this card is only available in pre-made computers, the drivers will vary from machine to machine, so the 7450 can only be updated with drivers from your desktop manufacturer. In the Release Notes for the newer drivers, you will note that the 7400 series is missing from supported hardware, because there are no drivers from AMD for the 7450 (or 7350/7470/7570/7670).
AMD Customer Care
The information presented in this document is for informational purposes only and may contain technical inaccuracies, omissions and typographical errors. Links to third party sites are for convenience only, and no endorsement is implied.