There's only 1 Steam engine and it gets constantly updated, so it'll be using an updated version of the HL2: Ep2 engine. Though how updated it is we won't know till it's out.
I thought there was the original HL2 engine used by old Source games and then new TF2 Source based engine that incorporates newer technologies.
Anyways - heres hoping Codeweavers gets off their lazy butts![]()
Yes there is, to answer your original question it's technically the same engine, but a much evolved version. So it's yes and no... Awkwardly
It's a shame it's not backwards compatible too. Would love to run through HL2 with the updated EP2 graphics engine.
Would it run on a new MB? Probably not. Looking at the system specs it'll run okay on my iMac with it's X1600 graphics card. So you might get it running on low. It's the graphics card that lets it down, everything else is perfect.