Need help,can't decide which one should i buy!

Ok so i need some opinion about these 2 laptops.

The first is an Asus(770$)

ASUS K53SM-SX037/8GB (ALU BROWN, 2GB VGA) - Intel QuadCore i7 2670QM (2.2GHz/Turbo 3.0GHz, 6M) CPU, NVIDIA® GeForce® 630M 2GB VRAM VGA, 8192 MB DDR3-1333MHz RAM, 750 GB 5400 rpm HDD, Web Camera, Supermulti Double Layer ODD, Bluetooth 3.0, Battery 6cell 5200mAh, 56W, 5:20hrs battery life, 3xUSB (1xUSB3.0), Intel HM 65 chipset, HDMI 1.3, 0.3MPix Webcam, Multifinger Touchpad, IceCool, Aluminium chassis, Carry Case, 15.6" HD LED (1366x768), 16ms

Second one also Asus(790$)

15.6" HD Display, 1366x678p
Intel® QuadCore i7-2670QM
4 GB DDR3 RAM
640 GB HDD
nVIDIA® GT555-2 GB
LAN, Wi-Fi b/g/n, BT 3.0, USB 3.0, HDMI
DVDRW, HD Webcam

So i was wondering,is the IceCool feature really worth over the better graphic of the second asus?I found out that the particular 630m in the first one is just a renamed 540m which is not satisfying.I compared them on geForce and on raw calculations this 555m is some 15%-20% better than the 630m on the first asus.About the ram im not really concerned,as most of today's games don't require more than 4gbs,and if needed there is a good chance that the ram is upgedable so its not much of a problem since ram is pretty cheap.Originally i was hoping to find some of these 2 Acer Aspire V3-571G-9435
Acer Aspire V3-771G-9875(preferably the 17 inch one with the 650M) as their price was my exact budget but as fate had it there were non ,in my country and if i order it online il have to pay a lot of taxes on the border it will cost more than i currently can give.So i decided to go for the 80% of the laptops in stock in shops here (thats i72670,2640,3610 combined with the shitty 610m or 630m)when 15 mins ago a friend of mine phoned me that they found one more in stock with a better graphic and that is the second laptop,but the icecool feature and 8gbs ram had me thinking about what should i do,i am not sure.Please i need a professional opinion if possible.Which one of these 2 will perform better for games???(Note i don't want my laptop burning down and becoming a hell machine while playing)