| 32-bit or 64-bit? |
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Nathan
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Yeah, "large dimensions" ;)
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RE: 32-bit or 64-bit?
quote:
Originally posted by Vilkku
x86 Vista atm, but when Windows 7 is released I'm getting the x64 version (also running Win7 64bit atm). Partly same reason as Menthix... while I only have 4GB of RAM, add the gfx card memory to that (1GB) and it's over the limit =(
So you're saying if you have 4gb of ram, and 3gb of it is used by windows, the 512mb of ram (that I have) on my 8800gtx isn't properly used because window's can't proccess that much ram, even if it's dedicated?
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| 03-07-2009 02:26 PM |
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Menthix
forum admin
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RE: 32-bit or 64-bit?
quote:
Originally posted by Nathan
quote:
Originally posted by Vilkku
x86 Vista atm, but when Windows 7 is released I'm getting the x64 version (also running Win7 64bit atm). Partly same reason as Menthix... while I only have 4GB of RAM, add the gfx card memory to that (1GB) and it's over the limit =(
So you're saying if you have 4gb of ram, and 3gb of it is used by windows, the 512mb of ram (that I have) on my 8800gtx isn't properly used because window's can't proccess that much ram, even if it's dedicated?
I don't think video memory has anything to do with it, first time I heard that.
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| 03-07-2009 02:39 PM |
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Nathan
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Yeah, "large dimensions" ;)
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RE: 32-bit or 64-bit?
That's the first time i've head it as well, but this is what vilkku is saying...
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| 03-07-2009 03:23 PM |
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Vilkku
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RE: 32-bit or 64-bit?
Well something must be wrong with my RAM then, as Windows only shows me having 3072MB  (using two 2GB sticks). I think it was segosa who told me this was the cause on #banana, tho I can't be sure who it was.
The way I understood it is that because of the 4GB byte-addressable memory limit on 32bit systems, it will limit the memory you get from your actual RAM so that the memory on say a GFX card is fully used. I don't think you really understood me Nathan - if what I'm saying is indeed correct, you would only have 3584MB of RAM available, how much is used by Windows at the time has nothing to do with it. |
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| 03-07-2009 03:54 PM |
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lopardo
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| 03-07-2009 03:58 PM |
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tony
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RE: 32-bit or 64-bit?
quote:
Originally posted by Vilkku
072MB (using two 2GB sticks). I think it was segosa who told me this was the cause on #banana, tho I can't be sure who it was.
Are you running SP1 on vista? used to happen to me with no service pack installed |
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| 03-07-2009 03:59 PM |
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Vilkku
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RE: RE: 32-bit or 64-bit?
quote:
Originally posted by tony
quote:
Originally posted by Vilkku
072MB (using two 2GB sticks). I think it was segosa who told me this was the cause on #banana, tho I can't be sure who it was.
Are you running SP1 on vista? used to happen to me with no service pack installed
It's not any problem, it's just a limitation. (and ofc I am running SP1  )
<&segosa> your graphics card memory needs to be addressed too, using the same 4GB address space. your os ram limit is 4GB - gfx mem
This post was edited on 03-07-2009 at 04:10 PM by Vilkku.
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| 03-07-2009 04:04 PM |
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segosa
Community's Choice
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RE: 32-bit or 64-bit?
Reading the links lopardo posted, there seems to be a hard limit of 3.12GB in Vista.
The previous sentence is false. The following sentence is true. |
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| 03-07-2009 04:09 PM |
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Sunshine
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RE: 32-bit or 64-bit?
32 bits Vista Ultimate SP1/Windows 7 Ultimate Beta (dual boot, mostly on Windows 7)
3GB RAM
This post was edited on 03-07-2009 at 04:16 PM by Sunshine.
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| 03-07-2009 04:12 PM |
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Vilkku
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RE: RE: 32-bit or 64-bit?
quote:
Originally posted by segosa
Reading the links lopardo posted, there seems to be a hard limit of 3.12GB in Vista.
quote:
Originally posted by http://support.microsoft.com/kb/929605/en-us
This behavior is the expected result of certain hardware and software factors.
Various devices in a typical computer require memory-mapped access. This is known as memory-mapped I/O (MMIO). For the MMIO space to be available to 32-bit operating systems, the MMIO space must reside within the first 4 GB of address space.
For example, if you have a video card that has 256 MB of onboard memory, that memory must be mapped within the first 4 GB of address space. If 4 GB of system memory is already installed, part of that address space must be reserved by the graphics memory mapping. Graphics memory mapping overwrites a part of the system memory. These conditions reduce the total amount of system memory that is available to the operating system.
The reduction in available system memory depends on the devices that are installed in the computer. However, to avoid potential driver compatibility issues, the 32-bit versions of Windows Vista limit the total available memory to 3.12 GB. See the "More information" section for information about potential driver compatibility issues.
If a computer has many installed devices, the available memory may be reduced to 3 GB or less. However, the maximum memory available in 32-bit versions of Windows Vista is typically 3.12 GB.
tl;dr - your os ram limit is 4GB - gfx mem |
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| 03-07-2009 04:12 PM |
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