You can't "buy" R2016 anymore: you can purchase a subscription ot R2017 and get access to 2016 for as long as you keep up with your subscription payments.
Minimum Intel® Pentium® 4 or AMD Athlon™ 64 processor
Memory
For 32-bit AutoCAD 2016:
2 GB (3 GB recommended)
For 64-bit AutoCAD 2016:
4 GB (8 GB recommended)
Display Resolution
1024x768 (1600x1050 or higher recommended) with True Color
Display Card
Windows display adapter capable of 1024x768 with True Color capabilities. DirectX® 9 or DirectX 11 compliant card recommended.
Disk Space
Installation 6.0 GB
Pointing Device
MS-Mouse compliant device
Media (DVD)
Download and installation from DVD
Browser
Windows Internet Explorer® 9.0 (or later)
.NET Framework
.NET Framework Version 4.5
Network
Deployment via Deployment Wizard.
The license server and all workstations that will run applications dependent on network licensing must run TCP/IP protocol.
Either Microsoft® or Novell TCP/IP protocol stacks are acceptable. Primary login on workstations may be Netware or Windows.
In addition to operating systems supported for the application, the license server will run on the Windows Server® 2012, Windows Server 2012 R2, Windows Server 2008, Windows 2008 R2 Server editions.
Citrix® XenApp™ 6.5 FP1, Citrix® XenDesktop™ 5.6.
Additional Requirements for Large Datasets, Point Clouds, and 3D Modeling
Memory
8 GB RAM or greater
Disk Space
6 GB free hard disk available, not including installation requirements
Display Card
1600x1050 or greater True Color video display adapter; 128 MB VRAM or greater; Pixel Shader 3.0 or greater; Direct3D®-capable workstation class graphics card.
Note:
64-bit Operating Systems are recommended if you are working with Large Datasets, Point Clouds and 3D Modeling.
VMware: Recommended Level Configuration 1
VMware Software
VMware Horizon 6.1 or later VMware vSphere 6 or later
Virtual Machine Operating System
Microsoft® Windows® 7 SP1 64-bit: Windows 7 Enterprise, Ultimate, Professional, or Home Premium
Microsoft® Windows® 8 64-bit: Windows 8 Enterprise, Pro, or Windows 8
Microsoft® Windows® 8.1 64-bit: Windows 8.1 Enterprise, Pro, or Windows 8.1
Host Server Recommendation
Performance 2
CPU
3.0 GHz+ Intel® Xeon E5 or later; or AMD® equivalent with SSE2 technology
Memory
384-512 GB
Networking
10 Gb
Storage
~750+ IOPS Per User
GPU
NVIDIA GRID K2 or later
Virtual Machine Settings
Performance 2
Memory
16-32 GB RAM
vCPUs
8 vCPUs
Disk Space
Minimum 700 MB free disk space
Graphics Adapter
NVIDIA GRID K260Q (2 GB) or later
Virtual Machine Connectivity
Internet connection for license registration and prerequisite component download
1Disclaimer: The VMware application is network-based and performance of AutoCAD for VMware software products may vary with network performance. The software does not include the VMware application, nor does Autodesk provide direct support for issues with the VMware application. Users should contact VMware directly with questions related to procurement and operation of the VMware application.
