1. There are much better laptops for the money IMO. Is this something you have to buy locally or are you shopping online?
2. I'm pretty sure all mobile i7 are hyperthreaded and should act as a quad for the lvl of gaming you can expect from a entry lvl mobile GPU.
3. Here are two laptops worth looking at. Note I am not recommending these exactly but just showing you what's out there.
It only has a 1366x768 monitor, so the 920M will work well (depending on the game). Settings may need to be dialed back on some newer titles, but it will offer a playable experience. It is also likely to run hot in heavy gaming sessions, so a laptop cooler or lap desk.....if you're going to actually use it on your lap....would be advisable.