Last year i bought my syster, at a good offer, an HP Pavilion: i5-3230M, AMD Radeon HD 8670M, 4 GB DDR3L, HM76 Express chipset. Being under warranty i don't want to make upgrades yet and for what she use it for, 4 GBs are enough. But also i think in the future and i know that memory prices will rise as soon as DDR4 hit the market. Beside an ssd i want to make this memory upgrade and honestly i'm not sure if is it right to spend money on 8 GBs or 16 GBs kit. That means a price difference of $91, from $113 to $204. Any thoughts? Thx in advance.