To run a optimized version of Windows 7 Ultimate SP1, your hardware should meet these minimum benchmarks: 32-bit (x86) 64-bit (x64) 1 GHz or faster 1 GHz or faster RAM Storage 16 GB free space 20 GB free space Graphics DirectX 9 with WDDM 1.0 DirectX 9 with WDDM 1.0 Sources: AVADirect , TechTarget How to Create a Bootable USB
Many non-essential Windows features and legacy drivers are removed to save disk space and RAM. To run a optimized version of Windows 7
Insert a USB flash drive with at least 8 GB of storage. To run a optimized version of Windows 7
Some modern custom ISOs include integrated USB 3.0 and NVMe drivers, which were not natively supported in the original 2009 release. System Requirements To run a optimized version of Windows 7