ENERGY STAR® is the government-backed symbol for energy efficiency, providing simple, credible, and unbiased information that consumers and businesses rely on to make well-informed decisions. ENERGY STAR is the simple choice for energy efficiency, making it easy for consumers and businesses to purchase products that save them money and protect the environment. ENERGY STAR <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 Hard Drive HDD Intel® Xeon® processors deliver cloud computing, real-time analytics, processing for your mission-critical business, and big data insights. Improve data center efficiency and reliability to handle any workload. Intel Xeon E5 HP 420, 3.6 GHz, Intel® Xeon® E5 Family, 8 GB, 1 TB, DVD Super Multi, Windows 7 Professional HP 420. Processor frequency: 3.6 GHz, Processor family: Intel® Xeon® E5 Family, Processor model: E5-1620. Internal memory: 8 GB, Internal memory type: DDR3-SDRAM, Memory clock speed: 1600 MHz. Total storage capacity: 1 TB, Storage media: HDD, Optical drive type: DVD Super Multi. Operating system installed: Windows 7 Professional, Operating system architecture: 64-bit. Power supply: 600 W. Chassis type: Minitower. Product type: Workstation. Product color: Black https://www.computershopper.com/desktops/reviews/hp-z420-workstation The workstation-versus-desktop debate has raged for years. Workstations, of course, are computers for demanding commercial markets, especially those that rely on visualization and graphics technologies, such as computer-assisted design (CAD), 3D anima... Potent performance, SSD plus hard drive storage, Plenty of expansion slots No Thunderbolt or eSATA ports, Consumer- rather than industrial-grade hard drive HP's mid-range workstation is an exemplary if somewhat plain vanilla example of the category, solidly built and a speedy performer. ... https://www.pcmag.com/review/312756/hp-z420 The HP Z420 ($2,768 direct) is a mid-level single processor workstation from HP. It has a good measure of expandability backing up its liquid cooled Intel Xeon processor and Nvidia Quadro workstation-class graphics. It was a speedy performer on our benchm... Xeon power. Quadro graphics. Lots of expansion room. ISV Certifications. USB 3.0 on front and back. SSD C: drive with 1TB D: drive. No eSATA or Thunderbolt The HP Z420 is a powerful, expandable workstation. It combines the power of a quad-core Intel Xeon processor with an Nvidia Quadro graphics to give you a powerhouse system that can grow along with your company.... http://www.justechn.com/2012/05/22/review-hp-z420-workstation In a never ending effort to always improve, HP has released a new version of their Z workstations. These new workstations are the Z1, Z210, Z420, Z620, and Z820. HP was good enough to send me the Z420, which is their Price/Performance Leader, and I am go... HP has done a great job of filling this workstation with great components, but still keeping the price low. If you are looking for workstation for your office then I recommend you look at the HP Z line of workstations. With such a variety to choose fr... https://www.anandtech.com/show/5846/hp-z420-workstation-review-competition-heats-up Recently we had a chance to review Dell's Precision T3600, and we found it impressive. A company that seemed content to be an also-ran in the enterprise desktop space reinvigorated itself with smart new chassis designs to go along with the refreshed... When I attended the Dell press event for their revised Precision line, one of the other journalists there essentially called Dell to the mat for playing second fiddle to HP, and asked what Dell was going to do to make up the difference. Given the comparis... https://www.slashgear.com/hp-z420-workstation-review-18228944/ Workstation computers are strange beasts: it’s rare that someone more used to a traditional laptop or desktop will need them, or indeed, will be able to justify the extra expense. But for those who need massive amounts of performance for specific tasks... There aren’t many reading this that need massive amounts of power for specific and often crucial tasks. But for those who do, and can afford the premium that a workstation demands, the Z420 is an excellent choice. While not as flashy as the machines ...