Lenovo Thinkcentre M series for games

As far as user ratings and opinion goes, Lenovo Thinkcentre M Series, though a very fast system might not be the best for gaming. Instead Lenovo Y series, say Y50, Y510P are the two which give a very good feedback as gaming laptops.

Among other laptops:
Alienware 17,
ASUS ROG G750JX,
ASUS X550LD,
MSI GE60 2PE,
HP Envy 15-k006tx,
HP Pavilion 15-p045TX,
Dell Inspiron 3542, and
Acer E1-572G are the best.

Among the Best Gaming Desktops, the best user ratings go to the following:
Acer Aspire Revo AR3700-U3002,
Mini ITX-ME130JRI501-High Performance Gaming PC
Mini ITX - ME120JRA301- High Performance Gaming Rig

Hope you get one of them to suit your purpose.

In that case you can upgrade into GeForce GTX 650 which is having:
Twenty percent higher clock speed with Higher memory bandwidth of 80 GB/s, a better floating-point performance of 812.5 GFLOPS, a Higher texture rate of 33.9 GTexel/s, a significantly higher memory clock speed, roughly say, more than fifty percent higher memory clock speed with slightly higher pixel rate. You get more render output processors, more shading units, more texture mapping units, i.e., 32 in comparison to 8 which comes to 24 more than what you are having now along with a wider memory bus of 128 bit instead of your current 64 bit.
This will certainly increase the speed and you would enjoy a better gaming experience.

thanks dear

i have intel hd graphics 4600 in it is it enough