^^^ This (Denamic). But I'll also chuck in what I was going to say

EDIT: Ruddy hell there were a lot of replies since the one I was "this"ing. Obviously a hot topic. Den's still up there somewhere...
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It's a silly question, largely because there is no "standard PC" model to compare to, and the power level has varied massively over time, and even within each generation. Right now you can go out and buy a sub-1ghz netbook, or all the parts to build yourself an insanely powerful 8-core tri-SLI 1000w-PSU game annihilating monster, depending on your needs and how much you want to spend, and it's still a PC. The sheer total customisability of the PC platform in terms of graphics cards alone (from none/built-in mobile nastiness thru to several double-width PCI x16 turbonutters that require their own cooling and power feeds and each cost as much as a PS3) utterly nullifies the question.
It'd be like going back to the interwar period and asking "will stock family cars ever be able to outperform track racers?". Probably not, no, but there's a squillion different categories of motor race, whereas most "normal" cars fit a reasonably narrow size, performance and cost profile for the time they're in, as they're having to compete with fairly similar peers on both price and performance/quality. It's much the same as your choice being from Wii thru X360 to PS3 (a little economy car thru to a luxury tourer - with the DS/PSP representing scooters and everyday motorbikes).
You can have very lightweight dirt track racers with open frames and low cc engines that are fantastic on their own courses - and are a very cheap class of racing to get into - but would be beaten in a straight line on a tarmac road by an old Fiat 500 (these'd be your netbooks), or you can have fire-breathing dragsters and formula one paved-circuit cars where every part is custom designed and manufactured, and checked/replaced/improved after each race (your expensive game-focussed rigs).
So no, I doubt they ever will. They never really did, anyway, except for maybe the very early days of each generation - general purpose computers quite rapidly beat game-focussed consoles on sound and graphics not long after the start of each gen before this one, if they already weren't, and always were on top in terms of CPU performance. But they always were and still generally are more expensive... a computer at the same price as a console won't be as good as that console, as I've explained elsewhere.
Not everyone wants a formula one car, not for their everyday ride anyway, and the insurance & fuel bills are crippling

But it'll still piss all over a Veyron from a great height, never mind that the Bugatti is massively better in most ways compared to its equivalent from a few generations back (as is your grandmother's shopping hatch; a basic ford fiesta now could give a gen 1 GTi a run for its money, whereas the original fiesta would be nowhere). If having the absolute very best is your thing, put your money where your mouth is and get the custom-build track racer.