Delta 100 mistake on my part HELP

I just shot 2 rolls of Delta 100 and exposed it accidentally at iso 800.

I was using a digital camera to check exposure and forgot it was set for 
iso 800 ( I shoot at 100 spedd 99.9% of the time so this was overlooked)
So I exposed all my shots at the 800 speed setting.
Thinking back later, I knew the exposure times seemed way too small of 
an f stop, and realized I had changed the iso seting on the digital 
camera a week ago when shooting ouside at near dark.

My question is, what can I expect to get from this negative?
what should I expose the neg in, can it take a 3 stop push, or should i 
just throw the negs away?