-Added a SSD.
-Cheaper RAM, same performance.
-Removed the un-necessary thermal paste.
-Cheaper psu. 600w is plenty for this build.
-Cheaper GTX 780, same performance.
-Better keyboard. Razer keyboards aren't that great. Cooler Master keyboards are better quality, and if you need a full size fully backlit keyboard, the ultimate is a great one. However, it does lack macro keys. If you don't need a number pad or LED backlighting, you can opt for the cheaper CM Storm Quickfire Rapid which is a high quality tenkey-less keyboard with no backlighting.