i am about to buy this MSI GX660 laptop but one thing that concerns me is the battery. actually, just 6 cell battery is available right now in this model and i am a bit concerned as i am buying this laptop for gaming purpose only. so , do you think that 6 cell battery will do fine or 9 cell battery is a must for this laptop. Here are the system specifications: PROCESSOR: core i5-460M, RAM: 4GB DDR3(2GB*2), GRAPHIC CARD: ATI Radeon HD5870(1GB DDR5 dedicated graphics), CHIPSET: PM55, HARD DISK: 500GB SATA @5400rpm, SCREEN/RESOLUTION: 15.6" HD, Glare (1366*768) LED