best configuration .....?

The main thing you have to consider is the processor, RAM & graphic card. I prefer AMD which does better in gaming. Check for the following also Nvidia 9600GT 4GB of DDR2 RAM ASUS motherboard 500W PSU 2x 300GB maxtor HDD SATA The brand and speed of RAM that you purchase has virtually no impact on game perfomance; just make sure you buy 4 gigabytes. In conclusion, the best gaming PCs only operate accordingly your entire system is equipped with sufficient parts, that are configured properly and maintained on average basis. You can't expect to buy a fast processor and purchase a minimal amount of memory supported by your motherboard, which will create a bottle neck in you system