What is the RAM limitation on a 64-bit operation system. Cuz like, 32-bit operating systems only run like 3.2 gbs max.
Answer by Zane Harnish · Sep 05, 2011 at 12:49 PM
Often the motherboard will limit the amount, even if it didn't, the OS does, Windows 7 Ultimate and Professional can use up to 192 GB, Windows 7 Home Premium can only use up to 16 GB, and Home Basic and Starter limit you to 8...
Answer by beStoN · Sep 05, 2011 at 03:28 PM
It is important to understand what 64-bit and 32-bit actually means. When a CPU talks about "64-bit"ness, it's referring to the presense of a 64-bit type. That type might be an integer type (eg. for counting, multiplication, division, etc) or it might be an address type (for pointing to some location in memory).
The Intel Atom 330 is a 64-bit processor that will run Windows 7 64-bit, but only has 32-bit address types. A 64-bit OS is an OS that's capable of making use of that type. Again, it might be an integer type, instead of an address type. There really isn't enough information in the question to provide a good answer.
Whether the number of bits in an address type is a significant factor in determining the maximum amount of addressable memory is correct or not is another question... If 32-bit address types limit addressable RAM to 4GB, then explain how 32-bit types on hard drives are capable of addressing quantities like 1 terabyte... ;)
Answer by Razor512 · Sep 05, 2011 at 04:15 PM
windows 32 bit on average will detect 3328MB memory if you install 4GB
If you can do the kernel mod you can easily use well over 8GB memory on a 32 bit copy of windows. The 32 bit kernel mod allows windows to address up to 64GB memory but it does not go past the 2.5GB limit where a 32 bit app can only address a max of 2.5GB memory, even if you have 64GB installed.
Most 64 bit OS will allow 192GB RAM to be installed but 64 bit can allow for much more memory than that, and applications also don't have the 2.5GB limitation (that is if the application is also 64 bit)