Right-click the Photoshop.exe file and select "Run as Administrator" to ensure it has permission to use system RAM.

One of the main reasons users look for the 32-bit portable version is low overhead. Since it doesn't install deep registry files or background services, it runs smoothly on modest specs. Windows 7 SP1 (32-bit or 64-bit). Processor: Intel Pentium 4 or AMD Athlon 64. RAM: 1GB (2GB recommended). Storage: 500MB to 1GB of free space on a drive. Display: 1024x768 resolution. How to Use the Portable Version

Intuitively shift objects within an image.