Lenovo recommends Windows. 

ThinkStation E31: Superior entry-level single-CPU tower

E31. DESKTOP PRICING. WORKSTATION PERFORMANCE AND RELIABILITY.

With the E31, you can get the performance and reliability you need on a budget you can afford, with Windows 7 Professional preloaded on all Lenovo ThinkStation models. The new Lenovo ThinkStation E31 tower and small form factor (SFF) workstations provide the high-performance Intel® Core and Xeon® processors and error-correcting memory to deliver the professional results you need — at an entry-class price point. Professional results require powerful graphics and — the E31 systems supports both Intel integrated graphics as well as discrete graphic options from NVIDIA.

The E31 offers a reliable, green workstation solution, with the E31 SFF offering a compact design at only 11L. Both E31 workstations are environmentally friendly, offering up to 92-percent power efficiency. Equipped with Error Correcting Code (ECC) memory, which virtually eliminates all memory-related failure, the E31 ThinkStation also supports 1600 MHz DDR3 Memory DIMMs to boost productivity. And the ISV applications you depend on are certified and supported on the E31, including Autodesk, Adobe, Dassault Systémes and PTC.

 
E30

Enhanced Experience 2.0Available with Intel® Xeon® E3 processors, the E30 delivers workstation performance at desktop prices. Additionally, the E30 includes Lenovo Enhanced Experience 2.0 for Windows® 7, for faster boot and shut down times, as well as accelerated performance.

ThinkStation Tower

Integrated Intel® HD Graphics pack power — along with the option to choose discreet NVIDIA® NVS and Quadro® graphics for enhanced 2D and 3D performance gains that will maximize productivity.

NVIDIA

Graphics card availability:

NVIDIA® NVS 300
NVIDIA NVS 450*
NVIDIA® Quadro 400
NVIDIA Quadro 600
NVIDIA Quadro 2000D*
NVIDIA Quadro 2000D*
NVIDIA Quadro 4000*
*Tower only

E30

The E31 features Intel® vPro with Active Management Technology (AMT), which allows IT personnel to access, diagnose, repair, manage, and secure workstations from remote locations, saving time and reducing maintenance costs. Additionally, the E31 comes with self-encrypting drives, Hardware Password Manager, and Rescue and Recovery® for maximum security.

The workstation eco-conscious design offers up to a 92 percent efficient power supply, as well as Energy Star 5.2, 80 PLUS® Platinum, EPEAT Gold and GREENGUARD certifications. Our innovative design allows our workstation to run cooler and quieter. Additionally, at less than half the size of the mini-tower, the newest SFF (11L) option provides an ideal space-saving choice for smaller office work areas.

Recycled Plastic Recycled Plastic Usage, featuring Post Consumer Content (PCC).
Greenguard GREENGUARD® certification, to preserve indoor air quality with low chemical and particle emissions.
Epeat Gold EPEAT® Gold certification, for lower toxic material, greenhouse gas emissions, and electricity consumption.
TCO TCO certification, indicating low noise and radiation levels, and minimal environmental impact.
80 plus bronze certified 80 Plus® Bronze certified with 85% PSU efficiency.
Environmental datasheet
More Information
VIDEOS
E31 Product Tour E31 Video Tour