I sort of agree with those guys. Microcenter all the way for the CPU/Mobo combo. I'd recommend the following:
CPU/Mobo Combo Price at Microcenter: $260
CPU:
Intel Core i5-4670K
Motherboard:
MSI Z87-G41
The MSI board is their cheapest board that you can combo the i5-4670K with. The next step up is an additional $50 and you'd gain the ability to run SLI (which I don't see happening on a budget build anyways) and a couple more USB 3.0 instead of 2.0 slots.
RAM/Memory I know some people are hyper-fanboys of one brand or another. If you can find an 2x4GB pack of CL9 with a 1.5 Volt rating while you're at Microcenter for $10 cheaper, get it. Personally I'd stick with OCZ, GSkill, Corsair, or Crucial as far as brands go but there are others that would work fine. Here's my recommendation...
RAM:
G.SKILL Ripjaws X Series 8GB (2 x 4GB) 240-Pin DDR3 1600- $72
The power supply I'm going to recommend is maybe even a little overkill yet but will allow you to get a mid-range card in the future, others can argue with me on that one.
Also it is on sale right now for $25 (after rebate) which is a friggin' steal.If you want the modular version (I only use modular now personally, but this is a budget build) it is $51. If you are considering getting a higher range card, you will need at least a 500 W - 600 W PSU which will cost you $60-80 for a good PSU. Do not skimp on the PSU. I am a fanboy of SeaSonic or SeaSonic branded PSU's personally but others can recommend something different.
Power Supply:
Cosair CX430 (430 watt)- $25 (after rebate)
Do you care about the look of the case? If so just do a little research. Do you want something that is cheap, will work and won't have all the bells and whistles? Get a $20 case while you're at MicroCenter. I believe I got this one for $20 while I was there a few days ago on a budget build. It was only a slighty more pain in the butt to build with, but we saved $50-60 on it so fuck it.
Case:
Thermaltake V3 Black- $20-40
How much space do you need for your drive? At this point (about $375-$400) you have room for a SSD and a storage drive, or even a storage drive and a 650 TI Boost.
Harddrive:
SSD -
Samsung 840 Series 120 GB- $100
Storage -
WD Blue 1 TB- $70
Total: $550-575
This all depends on whether or not you have a MicroCenter available as well, but you can still get in that ball park with Newegg/Amazon. You now have ~$75 left over and can save up to get a dedicated GPU in the future.