Ok, I'll start with how this question arose. I switched to mac (completely) and hence sold my windows laptop and desktop. I have a Core 2 Duo 2.16 White MB. It has a 13" screen. I'm learning new things everyday and love mac. The major activities that i do are : Creating documents (MS Word on Mac) Watch a lot of movies Image viewing And i was not happy to do it on a 13" screen. So i decided to get a desktop with monster screen. I'm buying a 42" 1080p screen for the desktop. This is where the problem starts. What should i do: 1. Upgrade my Macbook (RAM, HDD and save a lot on building a CPU). Hook the macbook up with the big screen. This way, i stick to mac and get a dual display. OR 2. Build a CPU and use that with the screen. I can use the laptop for college and similar stuff. Drawbacks are, i would get back to windows (which i don't want to). Second, I'll have to synchronize desktop and laptop (i don't wanna use two computers ). The advantage is i can have a high performance desktop. Advice me.