The story is not only about the Engine itself BUT also based on the following points:
1- The Programer System specifications, this mean on which system dos he/they test the engine.
2- CPU, YOU ALL KNOW THAT the stronger CPU means better performance
4- Motherboard,and I would like to discuses this point, As you all know that we have different types and brands of mother boards, NOW you can support your PC with stronger mother board to get higher and MORE STABLE performance, we face alot of BUGs with many engines and those bugs came from different type of hardware in addition to FOR SURE software. For example, I notice that with GIGABYTE mother board P55A=UD3P, with CPU CORE I5 750, AND 4GB RAM that the performance of the SYSTEM is very high if u use windows 7 64 Ultimate. and i did not suffer the same hanging for the Engines as in windows xp 32.
What I wanted to say her is that its not only the CPU and number of cores.
One more thing also we can take care about is the RAMS, and the IMPORTANT point regarding the cooling system in CHESS cooling system is very important because its taking the power of your system.
Thanks to all.