I used to own a laptop very similar to this one, and it's not too bad. The GTX640M is definitely a lot better than the options you mentioned, the CPU is good enough, and it seems to be in your price range.
Speaking from experience, I'd say that with HLE and EFB to Texture, you'll be able to run the majority of games full-speed; achievable resolution will depend on the game, but as a general rule 2x IR should be mostly fine.
More demanding games will need various speed hacks, and might still not run full speed. My laptop had a Sandy Bridge, instead of the Iby Bridge in the one I linked to, but otherwise the CPU models are similar and I'm not sure how much it will improve your performance; in any case, don't expect to be able to play Twilight Princess full-speed. I think I barely managed a steady 20 FPS with HLE and fast texture cache. Similarly, graphically demanding games will require a lower res: going above 1.5x IR and adding any AA in Skyward Sword will probably immediately kill your framerate.
One thing to note is the screen resolution, which is HD not FHD, and also 1366*768, which rather unusual. Also, the particular one I linked you to has had its 1TB HDD replaced with a much smaller SSD; so unless you plan on playing your games from one of those rare optical drives that can do so, you might need to get more storage. But HDDs are dead cheap today, so it shouldn't be too much of a problem.
Speaking from experience, I'd say that with HLE and EFB to Texture, you'll be able to run the majority of games full-speed; achievable resolution will depend on the game, but as a general rule 2x IR should be mostly fine.
More demanding games will need various speed hacks, and might still not run full speed. My laptop had a Sandy Bridge, instead of the Iby Bridge in the one I linked to, but otherwise the CPU models are similar and I'm not sure how much it will improve your performance; in any case, don't expect to be able to play Twilight Princess full-speed. I think I barely managed a steady 20 FPS with HLE and fast texture cache. Similarly, graphically demanding games will require a lower res: going above 1.5x IR and adding any AA in Skyward Sword will probably immediately kill your framerate.
One thing to note is the screen resolution, which is HD not FHD, and also 1366*768, which rather unusual. Also, the particular one I linked you to has had its 1TB HDD replaced with a much smaller SSD; so unless you plan on playing your games from one of those rare optical drives that can do so, you might need to get more storage. But HDDs are dead cheap today, so it shouldn't be too much of a problem.