Aside from which, the single-ship poly count isn't really the core issue...
The total on-screen poly count when you're playing CarrierBattles, and have 2000 fighters and 150 warships slugging it out is what will really stress the system
'We, the weird, chasing the pointless, for no reason at all, have been finding out things that have no effect on anything important for at least a couple days and are now qualified to chase our tails to the merriment of all watching.'-Narf et al
"Of course, you don't want to be going about handing out immortality willy-nilly, that just wouldn't be responsible." -O'Shea