Edit: And again, I DO blame the OEMs for some of their higher-end (CPU-wise) rigs, that are otherwise totally UNBALANCED. So called "gaming rigs" at BestBuy, with a 4790, 12GB of RAM (why not 8 or 16? What about dual-channel), and like a 4GB GT730 DDR3 video card. And of course, no SSD.
The OEMs are either ruthlessly ignoring the needs of most people, in terms of selling them a reasonably-configured PC, or they're just clueless about configurations, and instead prefer to sell "checkbox systems", with higher numbers, but without the balanced performance that most people would prefer.
And the above system with a 300W PSU, with only enough power connectors for the SATA DVD-RW and HDD, and nothing else, no video card connectors, etc.
Edit: This bothers me personally, because I build custom rigs, and I've seen friends / acquaintances get more-or-less "burned" by buying a PC at BestBuy, and instead of getting an OEM rig for basic desktop computing dirt-cheap using a coupon or buying clearance or both at Staples, they bought an overpriced i5 rig for "gaming", and it didn't even come with a GPU! For the same money, I could have built them something a lot more balanced.