i have a list of things i need to buy in order to upgrade my m17x r1 to r2. so far i plan to buy: r2 motherboard core i7 920xm r2 audio board r2 magnesium tray heat sink for 920xm anything else that i might need? i found this is it 'safe' to order parts from that website? most of it is outside of the US. i dont want to run in to any problems. - for the cpu, is there a significant difference between these 2 cpu? Intel Core i7 920XM Q2C7 Extreme Edition ES CPU | eBay SLBLW Intel Core i7 920XM 2 0GHz Laptop Processor Tested | eBay the q2c7 is cheaper, so does it mean its not as good as the slblw one? - would the magnesium tray for the r2 fit on the r1 chassis? would the audio board fit as well? -- thanks for reading.