Lenovo's ThinkCentre M91p Desktops come in 3 form factors: Tower, Small Form Factor (SFF), and Eco Ultra-Small Form Factor (USFF). They are dubbed as Enterprise-class desktops as they are the first ThinkCentre desktops equipped with Intel's 2nd Generation Processors with Turbo Boost technology for better performance and better multi-tasking.
Processor choices of the ThinkCentre M91p can be up to 2nd Generation Intel Core i7-2600 (3.4GHz, 8M Cache) with memory speed of PC3-10600 1333MHz and choices from 2GB, 4gb, 6GB, 8GB, 12GB, or 16GB - perfect for all those intense computations and applications of big enterprises. You may also choose to pair it up with a sufficient video adapter for the audio-visual presentations: you may have the onboard Integrated Video Intel Q67, AMD Radeon HD 5450 512MB or AMD Radeon HD 6450 1GB.
First Hard Drive that is included with the ThinkCentre M91p has a size of 250GB (7200rpm) SATA. Installed operating system is Genuine Windows 7 Professional 64. The ThinkCentre M91p desktops are the "greenest" in Lenovo's line of business desktops, using up to 42% post-consumer products and Energy-Star compliant power supply units.
Source: Lenovo ThinkCentre M91p
