Actually, I meant it the other way around. =P
PC gaming is more cost effective:
Console (for games) $300 + Cheap PC (For MS office, email, etc.) $400 + 3 new games $180 = $880
Pretty good Gaming PC (For MS office, email, games, etc.) $600 + Minecraft $30 = $630
Well, what if you want a better gaming PC? That's more for the upgrades.
But what if half a dozen games come out that you cant wait to play? Probably more than PC upgrades.
Especially with steam sales, PC games are dirt cheap if your smart about it. I got Civ V and Portal for $2.50 each on two separate occasions.
Just my $0.02.