Our Dell OptiPlex 790 had an Intel Core i5-2400 3.1GHz processor running under the 32-bit version of Windows 7 Professional. ... Accessing the inside of 790 was very easy.

The Optiplex 790 runs on 64-bit Windows 7 Home Premium. Dell also offers a 90 percent efficient power supply option for all Optiplex 790 models, which helps even further with its Energy Star 5.0 ...

Review: Dell OptiPlex 790 desktop computer. The Optiplex 790 is a computer aimed at business which has the advantage of being small while still being powerful. By Techbyte 07 September 2011 • 11 ...

Dell Optiplex 790. PCMag UK Aug 22, 2011. Bottom Line. Product not yet reviewed by PCMag Editors. 22 Aug 2011. Dell Optiplex 790 Specs Graphics Card: Intel HD Graphics 2000: ...