Buy.com is selling Intel Core i7-870 quad-core processor HP desktop tower for $699.99 only. Shipping is free. The only downside is it is a refurbished one. The desktop tower features 8GB DDR3-1333MHz SDRAM, 2TB 7200 rpm SATA 3Gb/s hard drive, 1GB DDR3 AMD Radeon HD 6450, and more. Check out the deal here.