2408WFP A01 blinking problem

I see several variations of this problem posted but none with replies.  My configuration is entirely stock Dell, unlike the other posts.

This brand new monitor blinks ie turns off goes black for a sec, then comes back on. The little DVI grey icon appears in the left hand corner as if the monitor just got turned on or came outta power save mode.  This does not seem to be related to any software -- it can happen any time.  It usually starts off with the odd intermittent blink but over time the blinking gets more rapid to the point where it is useless to continue.  The fix? -- turn the monitor off and on, and the problem goes away - - for a while.

This monitor is connected to a brand new XPS 730X with Dual NVIDIA 9800GT.  SLI is set to disabled.  Latest drivers installed. Res set to native settings 1920/60.

Strange thing -- the monitor was OK when I had it connected to my Dell laptop with lower res settings.  Seems like the GT makes it work too hard.  :-)