Photoshop using 18GB RAM when no files open

[Colin Boulter]

Hello 

Can anybody explain why photoshop is using 18GB of RAM when nothing is acutally open in photoshop. Thank you 

[PECourtejoie]

Hi, Photoshop allocates memory according to how many presets are loaded (check your brush panel), and keeps some memory loaded in order keep unfragmented RAM blocks, when you close images.