You need to overclock the FSB on intel in order to get maximum performance, it isnt the processor speed that is problematic. Even if you overckock the FSB it is going to be the main bottleneck anyway. The FSB's isn't able to transport data as fast as other hardware wants it
If you dont want to overclock you should go with AMD. AMD has much more power when it comes to communication with other hardware
If you dont want to overclock you should go with AMD. AMD has much more power when it comes to communication with other hardware