i'm thinking of buyin a new rig but skylake processors with pci express 4.0 and ddr4 ram is coming out. so should i wait for that or go ahead and buy a pc now
Broadwell won't be shipping until Q4 of this year at the earliest so unless you want to wait until mid-late 2015, I'd buy an i5-4670k to hold you over until then, or an i7 if you have the money.