Hi, I have Photoshop cs5 and i am window vista 32bite user, i have 8GB memory RAM in CPU, but my photoshop show only 1617 MB available RAM, I want to incrase RAM.
So please help me how i incrase memory to photoshop. i want to more then 4GB RAM in photoshop memory.
You can try the /3Gb switch. http://technet.microsoft.com/en-us/library/bb124810(EXCHG.65).aspx
It doesn't always work though. Windows 7 64bit would be a major step forward for you with Photoshop.
A 32 bit operating system can only access 3.3 gigs of RAM. So the only way to increase memory is to shift to a 64 bit processor. Like Trevor said a jump to Windows7 64 bit would be a huge jump in performance.