Good to hear! I think either of these two would be best as-is, but I am an SSD fanboy:
Originally Posted by PontiacGTX
PCPartPicker part list: http://pcpartpicker.com/p/FKkwpg
Price breakdown by merchant: http://pcpartpicker.com/p/FKkwpg/by_merchant/
CPU: AMD FX-6300 3.5GHz 6-Core Processor ($96.98 @ OutletPC)
CPU Cooler: RAIJINTEK EreBoss 56.5 CFM Sleeve Bearing CPU Cooler ($28.99 @ NCIX US)
Motherboard: Gigabyte GA-970A-UD3P ATX AM3+ Motherboard ($74.99 @ Micro Center)
Memory: G.Skill Ares Series 8GB (2 x 4GB) DDR3-2400 Memory ($74.98 @ Newegg)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($53.97 @ OutletPC)
Video Card: HIS Radeon R9 290 4GB IceQ X² Video Card ($239.99 @ Newegg)
Case: Cooler Master HAF 912 ATX Mid Tower Case ($44.99 @ Micro Center)
Power Supply: EVGA 750W 80+ Bronze Certified Semi-Modular ATX Power Supply ($59.99 @ Newegg)
Optical Drive: Samsung SH-224DB/RSBS DVD/CD Writer ($15.74 @ Amazon)
Operating System: Microsoft Windows 8.1 (OEM) (64-bit) ($89.98 @ OutletPC)
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-01-15 07:57 EST-0500
I suggest cheaper RAM. If you don't need it, ditch the DVD drive. If you can add it in later, ditch the cooler (at least for the time being). A 128GiB SSD would be nice to have. Crucial M550
is quite cheap at the moment. The CPU is probably going to be limited by the cooler though, so that would be the first upgrade to get.
This is also good. Again, cheaper RAM, ditch the cooler for the time being, and add an SSD instead. Coolers are reasonably easy to swap, and the 860K doesn't need to much anyway. A Cooler Master 212 or TX3 for around $20 ought to get you 4.5GHz or so with headroom.
The main difference is that Pontiac's build offers better multi-core performance on an older platform, while painkiller's offers better single-core performance on a newer (but I think dead-end) platform.