What to buy?

[sknfilip]

1.Inspiron 3420
Intel Dual Core i5-3210M, 2.5GHz, (3.1GHz Turbo, Ivy Bridge 3MB smart cash)
4GB DDR3 1600MHz
750GB SATA 5400rpm
nVidia GeForce GT 620M 1GB DDR3

2.Laptop HP g6-2302sm
Intel Core i3-3120M 2.5 GHz
6GB DDR3
750GB SATA 5400rpm
AMD Radeon HD 7670M, 1GB DDR3

3.Laptop Acer Aspire V3-551G-8450121TMakk
AMD A8-4500M Quad Core 1.9GHz (turbo do 2.8GHz, 2x2MB L2 cache, 32nm)
12GB DDR3
1TB SATA
AMD Radeon HD 7670M 2GB DDR3

I don't need laptop for games like bf 3,gta 4 or 5,i'll play league of legends(btw on high with no shadows ??? possible??)First one laptop has best cpu,second one has better memory bandwidth,but third one has 2gb of memory? What is best laptop here ? price is the same

 

[sknfilip]

i was looking on videocardbanchmarks.com and 7640+7670 is stronger than 620m,but weaker than single hd7670m ...?
http/www.videocardbenchmark.net/gpu.php?gpu=Radeon+HD+7640G+%2B+7670M+Dual&id=313
http/www.videocardbenchmark.net/gpu.php?gpu=Radeon+HD+7670M&id=320
http/www.videocardbenchmark.net/gpu.php?gpu=GeForce+GT+620M&id=1430
and what do you think about this laptop
Laptop Fujitsu Lifebook AH532/G52
Intel Core i3-2348M
4GB DDR3 1.600MHz
500GB SATA 5.400rpm
nVidia GeForce GT 640M LE 2GB
price is lower