Can I play any game with max setting on the Macbook Pro (the most high-end one) with NVIDIA GeForce GT 750M Graphics Card.
I am planning on buying one.
ANY game? No. Some games? Definitely. StarCraft II, for instance, should play nicely as should Diablo III, WoW and Hearthstone.
The thing most people tend to forget about the machine you are considering buying is that it is a MacBook Pro WITH RETINA DISPLAY! As in, this is a 2880x1800 display and not the 1680x1050 or 1440x900 displays that you'd previously get in the now-defunct non-retina 15" MacBook Pros.
Driving games through this display requires them to be optimized for it, otherwise they (a) won't work right, (b) will run slow as hell, or (c) both.
Unfortunately, for MacBook Pros with discrete graphics, your only option is the high-end 15" with retina. My advice would be to do research, see if the games you want to play on it are supported, and then buy accordingly. Some, definitely won't. For instance, Portal 1 doesn't run well; at least, it didn't a year and a half ago. Your mileage may vary. If the games you want to play are not supported, I'd say get an iMac and then game on a PC laptop if you require gaming mobility.
I can't comment on the MBP, but I have a 750M in my iMac and it certainly can't play every game at max settings. Even playing Half-Life 2 (quite an old game now) at native resolution wasn't 100% smooth, and some sections of the game turned into slide-shows. The MBP does have an additional 1GB of VRAM though, which could make a difference.
Don't forget to factor the retina display in tow on that MacBook Pro. Apple doesn't have any MacBook Pro bearing that GPU that doesn't have a 2880x1800 retina display in tow and that really does change things when it comes to how well a laptop GPU can draw, especially if the game is not optimized to take advantage of the higher pixel density.
wow the 750m chip is THAT slow?
No. See above. Pushing 2880x1800 pixels is more work than pushing 1920x1080 pixels or the 1680x1050 that the 15" MacBook Pro used to have on the higher end.
The reason they didn't upgrade the dGPU is that they only change the GPU when they change to a new chipset, it's what they have always done.
The dGPU is made by NVIDIA, the chipset is made by Intel. Apple could've moved to the 850m or the 860m on the higher-end 2014 15" MacBook Pro if they wanted to. It's not like there aren't other Haswell laptops that DO have these dGPUs; Apple could've outfitted this one with it; they just chose not to. To say that they only USUALLY do it when there's a chipset change doesn't negate that they could've done it anyway.