<b>Higher Performance When You Need It Most</b> Intel® Turbo Boost Technology 2.01 accelerates processor and graphics performance by increasing the operating frequency when operating below specification limits. The maximum frequency varies depending on workload, hardware, software, and overall system configuration. 2.0 Legacy Intel® Core™ Processor Intel Core i5-2xxx Lenovo ThinkCentre M91p, 3.3 GHz, Intel® Core™ i5, 4 GB, 500 GB, DVD±RW, Windows 7 Professional Lenovo ThinkCentre M91p. Processor frequency: 3.3 GHz, Processor family: Intel® Core™ i5, Processor model: i5-2500. Internal memory: 4 GB, Internal memory type: DDR3-SDRAM, Memory clock speed: 1333 MHz. Total storage capacity: 500 GB, Optical drive type: DVD±RW. On-board graphics card model: Intel® HD Graphics 2000. Operating system installed: Windows 7 Professional, Operating system architecture: 64-bit. Power supply: 280 W. Chassis type: Tower. Product type: PC. Product color: Black The USFF version of Lenovo's ThinkCentre M91p packs a significant punch in a small package. Utilizing an Intel "S" low power processor and a 150W external AC power adapter, it's also incredibly energy efficient. The Lenovo ThinkCentre M91p hits most of the relevant marks for an enterprise-class desktop PC. The Q67 chipset gives it advanced security and management features and the Core i5 "S" processor delivers high speed, quad core performance with truly impr... https://www.pcmag.com/review/290420/lenovo-thinkcentre-m91p The Lenovo ThinkCentre M91p ($1,180 direct) is one of those utilitarian-looking, ubiquitous business desktops that seem to be on the desks of a lot of workers across the United States and around the world. There's a good reason for that: The Lenovo Thi... Compact form factor, High build quality, Includes PCI card slot, DisplayPort jack, Easily serviced, No HDMI, eSATA, USB 3,0 ports, Only one-year warranty included, Uses external power supply, The Lenovo ThinkCentre M91p defines the enterprise-class desktop, with an easy-to-service yet sturdy chassis. Its Intel Core i5 processor will satisfy your workers for a while. ... https://www.pcworld.com/article/236548/review_lenovo_thinkcentre_m91p.html If you love the old-school look of Lenovo ThinkPads, but you want desktop performance and pricing, check out Lenovo's ThinkCentre M91p series. This machine packs second-generation Intel processors into a slim, retro-style case. Our review model, priced... Plenty of USB ports Poor performance, for the price It has the look of an old-school ThinkPad, but you can get similar performance and better specs at a lower price. Lenovo ThinkCentre M91p: Business-Class Desktop PC Lacks Frills Lenovo ThinkCentre M91p Review, by Sarah Jacobsson Purewal August 1, 2011... Not so long ago, if you wanted a compact business PC, you'd have to dial down your performance expectations and pay several hundred dollars extra for the convenience of saving a few inches of office space. But the Lenovo ThinkCentre M91p 02... Compact design, Full-size hard drive and optical drive increase upgrade potential, Supports Intel vPro technology Limited expansion options, Potential warranty confusion An innovate design, full-size drives, built-in security, and remote management features make the M91p Ultrasmall compact business PC a good choice for space-strapped work groups. ... S We used the Performance Test benchmark suite from PassMark Software to gauge the strengths and weaknesses of the M91p’s various components. Overall, the Lenovo got a score of 1,193, which is respectable for a computer its size. Its Intel Core i5-250... Good internal space management; good speed. Not much room for upgrades; integrated graphics performance is low.