The full thing or a lighter version?
Trisquel 6 does probably use a bit less ram so it might work a bit
longer/better than some other distributions although I'd still be hesitant to
state 1GB is adequate.
I believe 1GB is still adequate if your running a modern distribution with a
GNOME 2 derivative desktop environment. However as soon as you move beyond
that to GNOME 3, Unity, KDE 4 (at last newer versions), or something derived
from them or its components, etc it becomes problematic. So... Trisquel 6 +
some other desktop environment might work... fine.
We got wayyy too many support calls from people thinking there were hardware
issues due to insignificant ram when we were offering a 1GB base
configuration (for those actually trying to use the system with just 1GB)
quite some time back (towards the end of that, obviously 4 years ago it
wasn't an issue).