AspenONE Engineering V8.6 (Big Jump from earlier Versions) Operating System Windows 8/8.1 (32-bit) Windows 7 (32-bit) Runtime .NET Framework 4.0 - 4.5 and .NET Framework 3.5 Minimum Processor: Intel® Core™ 2 Duo 3.00GHz or higher Hardware Memory (RAM): 4 GB Requirements Free Hard Disk Space: 40 GB * AspenTech recommends using a 64-bit Operating System AspenONE Engineering V8.8 Operating System Windows 8, 8.1 (64-bit) Windows 7 (64-bit) Runtime .NET Framework 4.5.1 and Minimum Processor: Intel Core-i3 family or faster Hardware Memory (RAM): 4 GB Requirements Free Hard Disk Space: 80 GB .NET Framework 3.5 AspenONE Engineering V9 Operating System Windows 10 (64-bit) Windows 8/8.1 (64-bit) Runtime .NET Framework 4.6 .NET Framework 4.5.2 .NET Framework 3.5 Minimum Processor: Intel Core-i5 family or faster Hardware Memory (RAM): 4 GB Requirements Free Hard Disk Space: 80 GB AspenONE Engineering V10 (Big Jump from earlier Versions) Operating System Windows 10 Anniversary (64-bit) Windows 8.1 Update 1 (64-bit) Runtime .NET Framework 4.7.1 .NET Framework 4.6.2 .NET Framework 3.5 Minimum Processor: Intel Core-i5 family or faster Hardware Memory (RAM): 8 GB Requirements Free Hard Disk Space: 80 GB AspenONE Engineering V11 Operating System Windows 10 Anniversary (64-bit) Windows 8.1 Update 1 (64-bit) Runtime .NET Framework 4.7.2 .NET Framework 4.0 .NET Framework 3.5 Minimum Processor: Intel Core-i5 family or faster Hardware Memory (RAM): 8 GB Requirements Free Hard Disk Space: 120 GB AspenONE Engineering V12.1 Operating System Windows 10 version 21H1 (64-bit) Runtime .NET Framework 4.8 and Minimum Processor: Intel Core-i5 family or faster Hardware Memory (RAM): 16 GB Requirements Free Hard Disk Space: 120 GB Minimum Processor: Intel Core-i5 family or faster Hardware Memory (RAM): 16 GB Requirements Free Hard Disk Space: 120 GB .NET Framework 3.5