ROLLTOP Assembled Desktop Computer Intel Core 2 Duo 2.9 GHZ Processor, G31 Motherboard, LED Monitor, Keyboard Mouse (Ritz) vs ROLLTOP Assembled Desktop Computer (Win 7, Intel Core 2 Duo, 2.9 GHZ Processor, G31 Motherboard, GB RAM, 500 GB Hard Disk , Wi Fi Adaptor)