G.SKILL RIPJAWS X DDR3 2200
This is a very fast memory stick. First off, it is DDR3, a very fast grade of memory. Then its speed is 22oo, one of the fastest clocking speeds for DDR3 memory. One of the greatest aspects about this memory is that it comes in 4GB sticks. This means that you can easily run your high end computer on one or two sticks, and considering the price for these, that may be all you will want. The price of this memory for a set of two will set you back $300 (newegg.com price).