All i really know is overclocking makes your hardware work harder but at the
cost of its life span. And i dont know what you mean by reference model >_<
I think that you will need read a little about overclock in Google before get more performance of your hardware. Basically, overclocking is get more performance from your components, changing the default settings for a better and stable ones.
Regarding the life span, that's not really true since you will not see any dramatic change like a component dead in 1 or 2 years, even, you can re-sell it and never know when died totally.
Anyway, I suggest you read a little about overclocking in Google, download MSI Afterburner and start to check the BIOS of your mobo. Also, if you don't have a good cooler (NON STOCK COOLER), don't try to overclock the CPU.