I'm getting out of GPU mining and have a complete system up for sale.  The specs are:

• Motherboard: Asus P6X58D-Premium
  Quote
  http://www.newegg.com/Product/Product.aspx?Item=N82E16813131614R
• CPU: i7-970 Gulftown - 6 core / 12 Threads - 3.2GHz
  Quote
  http://ark.intel.com/products/47933/intel-core-i7-970-processor-12m-cache-3_20-ghz-4_80-gts-intel-qpi
• RAM: DDR3 1600MHz G.Skill Ripjaws 12GB (8 months old)
  Quote
  http://www.newegg.com/Product/Product.aspx?Item=N82E16820231358
• PSU: Rosewill 850Watt (6 months old)
  Quote
  http://www.newegg.com/Product/Product.aspx?Item=N82E16817182072
• Video Card 1: Sapphire R9-280x (4 weeks old)
  Quote
  http://www.newegg.com/Product/Product.aspx?Item=N82E16814202046
• Video Card 2: Gigabyte R9-280x (3 Months old)
  Quote
  http://www.newegg.com/Product/Product.aspx?Item=N82E16814125490
• Basic case
• 320 GB SATA Hard drive (not calculated as part of the price)
• NO OPERATING SYSTEM

I am selling this for $1200 (includes shipping to USA) USD equivalent in BTC.  I offer escrow.  Let me know if you have any questions!