Given the fact that Dell has provided the drivers, then yes you should be able to install 2008, x86 or x64 without problems: support.dell.com/.../driverslist.aspx 2008 Standard is supported by Dell on the SC440: advisors.dell.com/.../iDriveMatrixView.aspx
Can you install 2008 , x86 or x64 on that server without any driver problems?    If you've tried, please leave a reply. 
Windows 2008 on Poweredge SC440