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Photoshop cs4 win7 memory missing

Last response: in Windows 7
February 9, 2010 9:20:47 PM

I have 4G ram but photoshop cs4 sees less than 2G with WIN7. What needs to be done to access the other 2 Gs?
Uncle Manny

Best solution

a b } Memory
a c 209 $ Windows 7
February 9, 2010 11:06:52 PM

You may have to use the 64-bit version of Photoshop (which means you would need the 64-bit version of Windows 7). Many 32-bit applications can only allocate 2GB of memory, and under a 32-bit desktop OS even the ones that are "large address aware" can only reserve 3GB for themselves. See: and note the limits on User-Mode Virtual Address Space.
February 20, 2010 2:17:10 AM

Best answer selected by Uncle Manny.