Lenovo ThinkCentre M600 Tiny. Manufacturer RefurbishedIncludes 90 Day Warranty. . The Lenovo 10G9000NUS is a stylish tiny desktop that fits just about anywhere, yet they provide a reliable performance that you can depend on. The Desktop features pentium core 1.6 GHz N3700 processor with Intel HD Graphics 5500 integrated graphics along with 4GB DDR3L SDRAM which gives lag free experience and has 500 GB hard drive which makes all essential data and entertainment files handy. . . 10G9000NUS: |- Clock Speed : 1.6 GHz |- Manufacturer : Intel |- Processor Number: N3700 |- 64-Bit Computing : Yes |Storage: |- Capacity : 500GB HDD (7200rpm) |- Optical Drive : No |- Hard Drive Interface : SATA 6 Gb/s |Audio: |- Built-In Speaker |Operating System: |- Edition : Windows 7 Professional |- Family : Windows 7 |- Pre-Installed OS : Windows 7 Professional |- Upgradable To: Windows 10 Pro |ThinkCentre M600 Tiny Desktop |4 GB (installed) / 8 GB (max) - DDR3L SDRAM