Have curtailed my open-sites addiction ... via expanding-bookmarks-glut (Lose/lose?)
Hoping that when it's all Mavericky and Safari has had its brain-transplant: 6 GB ought to suffice.

Especially al-punte: plan to use De-oxit (the standard good-contact cleaner) on that very video card and every other un-pluggable
--since disassembly for HD makes that not much drudgery. Can't waste my n-decades around e- hardware and its ills..
which you Can sometimes out-fox. IT folk, it seems to me often elide any thought.. of such nostrums
--less'n like Greg say? they be also EEs (for whom there is no excuse, I wot.)

I Like the idea of some extra cooling for that IR-red-flagged trouble nexus though; shall ponder the drilling placement, fitting of a small-dia hose-bib and ...
Moar Aire where there are sweat-beads already. This (filtered!) air will also provide +Px to minimize future dust deposits via convection; thus
not-necessitating opening-up the bottom tiny holes too--as would just deposit more dust==heat-insulation.

(I mean.. if I can get 3-4 more years than average user [?] before a forced hardware corporate-made retirement, because chip failures didn't happen.. well, you know..)

Thanks again for the sanity check. (That 'hole' may be there, capped for some days..) while I cobble-up a small, quiet squirrel-cage Braun desk-fan:
with filter-plenum. For the Win. Love that fan-control app as much as iStat--together they let ya do Science. :-)