Once you get into litecoins you will find out that not all hardware is created equal when it comes to mining. For whatever reason, AMD/ATI graphics cards rule the roost when it comes to bitcoin and litecoin mining. Here is a link to resources that help shed light on this. This one is particularly interesting because it is a full breakdown of cpus and gpus showing a numerical value for how much mining each piece of hardware can perform.

https://github.com/litecoin-project/...i-ATI_AMD_GPUs