Photoshop needs at least 8GB to operate well, and can really use upwards of 16GB, if you can afford it. But, Photoshop or other similar programs may not function well at all without 8GB. 8GB-16GB of RAM (or more) is recommended for Photoshop IF you are using a 64-bit version.How big is Photoshop?
Photoshop files sometimes have the file extension .PSB, which stands for "Photoshop Big" (also known as "large document format"). A PSB file extends the PSD file format, increasing the maximum height and width to 300,000 pixels and the length limit to around 4 Exabytes.What is the file size of Photoshop?
A file size for a photoshop file depends on many things but an average (finished file) might be in the area of 50mb. The dimensions for a file should be at maximum print size and no larger. That might be in the area of 12"wide x 16" tall. or for larger pallets, 14-16 wide.