Intel® Pentium® Intel Pentium Lenovo Essential H520s, 2.9 GHz, Intel® Pentium®, 4 GB, 500 GB, DVD-RW, FreeDOS Lenovo Essential H520s. Processor frequency: 2.9 GHz, Processor family: Intel® Pentium®, Processor model: G645. Internal memory: 4 GB, Internal memory type: DDR3-SDRAM, Memory clock speed: 1333 MHz. Total storage capacity: 500 GB, Storage media: HDD, Card reader integrated, Optical drive type: DVD-RW. On-board graphics card model: Intel® HD Graphics. Operating system installed: FreeDOS. Chassis type: Desktop. Product type: PC. Product colour: Black https://www.computershopper.com/desktops/reviews/lenovo-h520s Few manufacturers bring as much business-focused clout to the table as Lenovo and its legendary black boxes, but the company's no-frills Essentials series doesn't receive nearly as much attention as Lenovo's marquee ThinkCentre desktops or ThinkPad laptop... Strong performance for the price, Small form factor, Attractive, unobtrusive design, Little bloatware Previous-generation processor and USB ports, Basic warranty, Uncomfortable keyboard, Limited expansion options It might not sport the most cutting-edge technology, but the H520s offers a lot of power for small businesses on a small budget. Read More... https://www.pcmag.com/review/303813/lenovo-h520s Design and Features The H520s is housed in a chassis that measures 12 by 4.1 by 14.2 inches (HWD). It's slightly taller and wider than the Acer Aspire AX1930-UR10P%displayPrice% at %seller% and significantly larger than the Lenovo ThinkCentre M92p Tiny%di... Slim, space-saving chassis. Affordable. Minimal bloatware. Integrated Wi-Fi. No USB 3.0. Older "Sandy Bridge" processor The Lenovo H520s desktop PC combines decent performance and value into a compact chassis, though there are similarly priced alternatives with more forward-looking hardware available....