How much memory does Windows support?
I had a customer recently ask about the memory limits for various editions of Windows, and thought that I would share the answer with everyone (as it took me a little while to find it). As 64-bit drivers are becoming more common from the OEMs, it is more and more tempting to use 64-bit editions of Windows (I just switched from 32-bit to 64-bit on my work computer, and have not yet run into any incompatibilities) J
https://msdn2.microsoft.com/en-gb/library/aa366778.aspx
Physical memory limits |
32-bit Windows |
64-bit Windows |
Windows Server "Longhorn", Datacenter Edition |
128 GB |
1 TB |
|
64 GB with 4GT RAM Tuning |
|
Windows Server "Longhorn", Enterprise Edition |
64 GB |
1 TB |
Windows Server "Longhorn", Standard Edition |
4 GB |
32 GB |
Windows Server "Longhorn", Datacenter Edition (Server Core installation) |
128 GB |
1 TB |
Windows Server "Longhorn", Enterprise Edition (Server Core installation) |
64 GB |
1 TB |
Windows Server "Longhorn", Standard Edition (Server Core installation) |
4 GB |
32GB |
Windows Vista Ultimate |
4 GB |
128 GB |
Windows Vista Enterprise |
4 GB |
128 GB |
Windows Vista Business |
4 GB |
128 GB |
Windows Vista Home Premium |
4 GB |
16 GB |
Windows Vista Home Basic |
4 GB |
8 GB |
Windows Vista Starter |
1 GB |
N/A |
Windows Storage Server 2003, Enterprise Edition |
8 GB |
N/A |
Windows Storage Server 2003 |
4 GB |
N/A |
Windows Server 2003, Datacenter Edition SP1 |
128 GB |
1 TB |
|
16 GB with /3GB |
|
Windows Server 2003, Enterprise Edition SP1 |
64 GB |
1 TB |
|
16 GB with /3GB |
|
Windows Server 2003, Standard Edition SP1 |
4 GB |
32 GB |