Hi, as the title says i have just installed more ram to get it up to 4gb but my windows xp only see's 2.99gb of it, i know the reasons for it is because some of the hardware is taking up that space. What i want to know is my graphics card using up that space, its a 1gb graphics card, also is their a way to find out what is using that space and i'm posting this here because my question is more to do with memory than my graphics card.
Windows xp using only 2.99gb when i have 4gb
- Thread starter Raven_55
- Start date
- Jun 19, 2011
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What you are seeing is normal for a 32-bit OS. 32-bit XP can only address 4Gb of memory this includes the system ram, vram and bios memory.
Your using a 32Bit O/S so you limited to less then 4GB as big said.
Your GPU isn't using up your RAM.
To see what is using your RAM hit CTRL-ALT-DEL and go into Windows Task Manager, the select the Processes Tab. The far right Column is the Memory Usage so you can see exactly what process your running and how much RAM they use.
Your GPU isn't using up your RAM.
To see what is using your RAM hit CTRL-ALT-DEL and go into Windows Task Manager, the select the Processes Tab. The far right Column is the Memory Usage so you can see exactly what process your running and how much RAM they use.
you misunderstood his answer.if you are running a 32 bit version of xp,and that is extremely likely,you computer will only recognize roughly 4gb no matter how much is installed.it has virtually nothing to do with your graphics card as it has its own memory.what this means is your computer is using 1.1gb of memory for system and other things,which is pretty damn good if you ask me.
- Jun 19, 2011
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What video card you have does effect how much ram 32-bot XP can see.
"Devices have to map their memory below 4 GB for compatibility with non-PAE-aware Windows releases. Therefore, if the system has 4GB of RAM, some of it is either disabled or is remapped above 4GB by the BIOS. If the memory is remapped, X64 Windows can use this memory. X86 client versions of Windows don’t support physical memory above the 4GB mark, so they can’t access these remapped regions."
http://msdn.microsoft.com/en-us/library/windows/desktop/aa366778%28v=vs.85%29.aspx
"Devices have to map their memory below 4 GB for compatibility with non-PAE-aware Windows releases. Therefore, if the system has 4GB of RAM, some of it is either disabled or is remapped above 4GB by the BIOS. If the memory is remapped, X64 Windows can use this memory. X86 client versions of Windows don’t support physical memory above the 4GB mark, so they can’t access these remapped regions."
http://msdn.microsoft.com/en-us/library/windows/desktop/aa366778%28v=vs.85%29.aspx
skit75
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- Oct 7, 2008
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Video card memory or VRAM gets physically mapped to system memory. If you buy a video card with an extra 1GB of VRAM, your system memory will have to address it/map it via MMIO to use it so yes, it will affect your current memory availability.
http://en.wikipedia.org/wiki/Memory-mapped_I/O
http://en.wikipedia.org/wiki/Memory-mapped_I/O
skit75
Splendid
- Oct 7, 2008
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I am very curious also as to how much it will actually use because I am in the same boat. I currently have a 1GB VRAM GPU with 6GB of System RAM. I am about to buy a card with 2GB VRAM. Already in BF4, with the rest of my system processes, I can get to 4.7-4.9GB of System RAM Usage.
If the MMIO mapping is 1 to 1, I would be in trouble and here is where my understanding gets cloudy. I've seen blogs indicating this might affect 32-bit systems more than 64-bit systems. I will be getting a new GPU within the next 30 days and will update this post.
skit75
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If your motherboard has onboard video, it might be allocating system RAM for it. You can disable this in BIOS to free that system RAM up.
As littleleo said, I don't believe the ratio to be 1 to 1. It could be significant enough to cause trouble in your rig though because of the limited capacity you have. When you saturate your system RAM, your pagefile comes into play. Addressing memory via the pagefile on your hard drive is super slow and you will see the effect in games, no doubt.
As littleleo said, I don't believe the ratio to be 1 to 1. It could be significant enough to cause trouble in your rig though because of the limited capacity you have. When you saturate your system RAM, your pagefile comes into play. Addressing memory via the pagefile on your hard drive is super slow and you will see the effect in games, no doubt.
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