Upgrading Alienware 14 processor

Hi, the link you have is for a desktop CPU, you need a mobile CPU - That's what the MQ stands for on the end of the 4700, mobile quad.

Here's a link to a company I have dealt with before and found them a little expensive but very reliable, you can confirm with them to make sure the I've provided a link to is suitable CPU for your laptop

http://www.ebay.com.au/itm/Intel-Core-i7-4700MQ-Processor-6M-Cache-up-to-3-40-GHz-/130994072174?pt=CPUs&hash=item1e7fdaea6e

Your better off using the Alienware 14 manual, here's a link.

ftp://ftp.dell.com/Manuals/all-products/esuprt_laptop/esuprt_alienware_laptops/alienware-14_Owner%27s%20Manual_en-us.pdf

This is going to be a big job for you if you don't have much experience with computers, I strongly suggest you follow the steps to the letter in the service manual, including grounding yourself and the laptop, using the correct size tools and having everything you need prepared before you begin.

Some people will recommend IC Diamond as a thermal paste, and it is very good BUT it is also difficult to use, Artic silver 5 is good enough for your purpose and its a lot easier to use, just remember more is less - Too much thermal paste is as bad as not enough. You want about a pea sized drop in the middle of the CPU, then use a old (Clean) laminated card to spread it evenly over the entire diode (Silver bit) don't miss anywhere and don't use to much and make sure it's evenly spread.

Clean the heatsink of any old paste before you start, you can use methylated spirits and an old clean rag to remove the old paste, clean the CPU to if it looks even a little dirty, you want it as clean as you can get it, throw the rag away after your have finished, don't get Artic silver 5 on you, if you do clean it off straight away with hot water and soap. Tighten the CPU heatsink screws in order according to the numbers beside the screws