Help on ~400 build

Hi There! 
I need some opinion between the two builds I have here. Maybe some suggestions or improvements on either one.. 

My main purpose for the desktop is for everyday regular use like for school, browsing those kind of stuff.. Not much in gaming (but maybe for some) ... 

  • Case: Cooler Master Elite 370 Black Mid Tower ATX Case
  • PSU: XFX 550W PRO550W 80Plus Bronze
  • Mobo: ASRock FM2A75M-ITX mITX FM2
  • HDD: Seagate Barracuda 7200.12 500GB 3.5IN 16MB Cache SATA3
  • RAM: Patriot Viper Xtreme 8GB 2X4GB DDR3 1866MHZ PC3-15000 9-11-9-27
  • CPU: AMD A10-5800K

Totals about: 363$ (NCIX), but probably lower if I search around, find sales, or price match
(Maybe Crossfire with Gigabyte Radeon HD 6670 800MHZ 1GB 1.6GHZ DDR3 DVI HDMI HDCP PCI-E Video Card)

OR

  • Case: Cooler Master Elite 370 Black Mid Tower ATX Case
  • Graphics: Gigabyte Radeon HD 6670 800MHZ 1GB 1.6GHZ DDR3 DVI HDMI HDCP PCI-E Video Card
  • RAM: G.SKILL F3-10666CL7D-4GBRH Ripjaws PC3-10666 4GB 2X2GB DDR3-1333 CL7-7-7-21 Core i5 1.5V Memory Kit
  • HDD: Seagate Barracuda 7200.12 500GB 3.5IN 16MB Cache SATA3
  • PSU: Thermaltake TR2 500W Power Supply Cable Management ATX12V V2.3 24PIN With 120mm Fan
  • CPU/Mobo Combo: Intel i3 2120 Dual Core Processor & ASUS P8H61-M LE/CSM R3 Motherboard

 

All your suggestions are greatly appreciatedd! Thankkkyou!

I think the first option is the best, but dont bother trying to crossfire as it has too many bugs and problems.