Copied from IBM website (although this laptop has 16GB of Ram and a 1TB harddrive) and no operating system installed:

he ThinkPad W540 20BG0011US 15.6" Mobile Workstation Notebook Computer from Lenovo is engineered for high-performance processing and graphics performance. This notebook computer is powered by an Intel quad-core 2.4 GHz Core i7-4700MQ Haswell processor and incorporates 8GB of 1600MHz DDR3L memory. With onboard Intel Turbo Boost 2.0 technology, the processor's speed can reach as high as 3.4 GHz. For long term data storage, this computer features a 500GB 7200rpm hard drive. Bluetooth 4.0 is built-in for wireless communication with other Bluetooth-enabled devices like smartphones. This model also has 802.11a/b/g/n/ac Wi-Fi for high-speed Internet connectivity.

The 15.6" widescreen display features LED backlighting for producing bright and vivid images. The display also incorporates anti-glare panel technology to minimize distracting screen reflections. The Full HD 1920 x 1080 native resolution is supported by the NVIDIA Optimus hybrid graphics system, which consists of the NVIDIA Quadro K1100M graphics card with 2GB of discrete memory and an integrated Intel HD Graphics 4600 chipset. A 720p webcam is also built-in into the computer for high-resolution video-conferencing.

This notebook computer incorporates a SuperMulti DVD burner for reading and writing data on optical discs, and a 4-in-1 card reader for interfacing portable media cards. The 4-in-1 card reader is also compatible with high-speed UHS-II SD cards. With two USB 3.0 and two USB 2.0 ports, you have multiple options for connecting mass-storage devices. To help keep your important data safe, this notebook computer is equipped with a fingerprint reader. This ThinkPad W540 series notebook computer comes with Windows 7 Professional (64-bit) pre-installed and includes a license for installing Windows 8 Professional (64-bit).

4th Generation Intel Core Processors
4th generation (Haswell) Intel Core processors are designed to deliver business-grade performance to increase productivity. These processors allow devices to turn-on quickly and stay up-to-date. These processors also allow you to multi-task efficiently, move effortlessly between applications, and collaborate wirelessly in a high quality video-conference, all with the convenience of longer battery life. Additionally, you can guard against identity theft and ensure safe access to your network with built-in security features.
Thunderbolt Port
Thunderbolt is a connection technology that simultaneously supports high-resolution displays and high-performance data devices through a single, compact port. Simply connect the ThinkPad W540 to multiple displays and devices with one cable, then sync and backup at up to 10 Gb/s (twice the speed of USB 3.0), capture and edit multiple uncompressed video streams in real time, and daisy-chain your devices to simplify your workflow. The Thunderbolt port also accepts mini DisplayPort connections.
ISV Certification
Because photographers, light CAD/CAM users, digital content creators, and other industry pros require proven performance and software stability, more than 100 applications are tested and certified by industry-leading independent software vendors.
Backlit Keyboard with Windows 8 Support
Full-sized and spill-resistant, ThinkPad ergonomic keyboards are known for their full array of keys, feel, and UltraNav TrackPoint pointing device. The 6-row backlit keyboard features a numeric keypad and is also optimized for Windows 8 with convenient multimedia buttons, immediate access to view apps, LED indicators, and function-lock capability. There's also a large, smooth trackpad and 5-point click integration - indicated by subtle bumps and stripes. Additionally, the touchpad features a Mylar surface and multi-touch functionality.
NVIDIA Optimus Technology
Automatically switch to your discrete graphics card only when it's needed. With hybrid graphics, you can extend battery life without sacrificing high-performance graphics for applications, high-definition videos, 3D views, and more. The Quadro K1100M graphics card supports three independent displays and maximum external resolutions of 3840 x 2160 at 60 Hz (Built-in Thunderbolt port and DisplayPort via optional mini DisplayPort adapter), and 1920 x 1200 at 60 Hz (VGA).
Stereo Speakers With Dolby Home Theater
Dolby Home Theater V4 is engineered to deliver increased audio clarity and maximized volume output without distortion. You can enjoy crisp, clear, immersive surround sound experience from the computer's built-in stereo speakers.
Integrated HD Webcam and Built-In Microphones
High-resolution video, face-tracking, and keystroke noise suppression technology will help you web-conference or chat like you're really there. The 720p webcam also features wide viewing angles, low-light sensitivity and fixed focus. Integrated dual digital-array microphones help ensure a premium audio experience.
Always-On USB 2.0 Connector
One of the computer's USB 2.0 ports is powered for charging portable USB-powered devices likes smartphones and MP3 players.
Audio Support
  • HD Audio
  • Realtek ALC3232 codec
  • Dual 1 W Stereo Speakers
    • Software and Hardware Security
  • Fingerprint reader on the palm rest with one-swipe sensor
  • Power-on password
  • Hard disk password
  • Supervisor password
  • Security keyhole
  • Trusted Platform Module (TPM)
  • TCG 1.2-compliant
    • Environment
  • EPEAT Gold rating
  • ENERGY STAR 5.0 qualified
  • GREENGUARD certified
  • RoHS-compliant
    • Other Features
  • Display: 500:1 contrast ratio
  • Case Material: Glass-Fiber reinforced plastic
  • Optical Bay: Removable 9.5mm Ultrabay slim
  • Wireless Chipset: Intel Dual Band Wireless-AC 7260, 2x2, Wi-Fi + BT combo adapter, M.2 Card
  • Ethernet Chipset: Intel Ethernet connection I217-LM (Clarkville)
  • Microphones: Dual noise-cancelling HD microphones
  • Mobile Intel QM87 Express chipset
  • Intel Hyper-Threading technology
  • Battery HW Authentication
  • Integrated Dock Connector