Max RAM Amount that Your Operating
System Supports:
Windows 8 64 bit Enterprise,
Professional : 512 GB
Windows 8 64 bit :128 GB
Windows 8 32 bit : 4 GB
Windows 7 64 bit Ultimate, Enterprise
& Professional :192 GB
Windows 7 64 bit Home Premium:16
GB
Windows 7 64 bit Home Basic : 8 GB
Windows 7 32 bit (all editions except
Starter) :4 GB
Windows 7 32 bit Starter :: 2 GB
Windows Vista 64 bit Ultimate,
Enterprise & Business: 128 GB
Windows Vista 64 bit Home
Premium:16 GB
Windows Vista 64 bit Home Basic : 8
GB
Windows Vista 32 bit (all editions
except Starter) : 4 GB
Windows 7 32 bit Starter :1 GB
Windows XP 64 bit : 128 GB
Windows XP 32 bit : 4 GB
Mac OS X 64 bit :96 GB
Linux 64 bit :1 TB
Linux 32 bit ::4 GB Linux 32 bit (with
PAE) :64 GB
So what's about your OS..?