should i get a powerforce g4 upgrade or a new system?

Hey! I was facing the same problem two months ago. I will recommend you that never upgrade your powerforce g4 only. It will really not work that much well and after using it for some time your problem will continue and you will always think that why you have done this. Why you don’t buy a new system instead of only upgrading the Powerforce g4. I will love to recommend you some of the MAC book that are present in the market which can come good for you:

Apple Mac book Air(11inch, summer): For this incredible products from the Apple you have to pay $ 949 to $ 999. It has got some of the incredible features like the Intel core i5 processors, 64 bit computing, 3 MB cache memory. It has also got the 4 GB Ram, 64 GB hard drive, 11.6 in display, LED backlight, 1366 x 768 Max resolution, Intel HD graphics microphone, Bluetooth 4.0. These all feature makes one of the best Mac book from the apple.

Apple Mac book Air (13in , summer): It has got the features like the i5 processor, 4 GB RAM, 256 GB.

Hope these information comes good for you.