1) Lenovo Y580 59-346843 (W7HB) (5934-6843) - Intel® Core™ i7 Processor 3630QM (2.4GHz up to 3.4GHz/1600Mhz/6MB Cache) - Promo RM 2,800.00

How much i must top up if i want to add 8gb RAM & Upgraded to 3 years Warranty for the above laptop...? Where is your shop location & do you accept payment using credit card....?