Deployment Server Maximum Client Count

I have an REALLY old DS 6.5 training manual that states:

Each Deployment Database can manage up to 5,000 computers but Altiris recommends stopping at 3,500 for best performance.

(This assumes the computer has dual 3.0 GHz processors and at least 4GB of RAM.)

I've searched high and low but can't find current documentation stating the maximum number of computers a single database can handle.  Is this limiation still true with DS 6.9 SP 6 on Windows 2008 R2 using an off-box SQL 2008 R2 server?

Thanks in Advance,

Ryan