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#31
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Total memory in XP pro sp3
Bob I wrote:
Sorry, it's not artificial, its the 32 bit addressing. You have to implement addressing extensions if you want a 32 bit system to address more than 4 GB of memory addresses. "addressing extensions" (PAE) is just another way of refer to memory addresses in a 32bit OS. XP has always supported PAE - it just ignores anything above 4G, hence it is an artificial limitation. Prior to SP2, address space above 4G was also supported - until you had 4GB usable RAM. |
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#32
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Total memory in XP pro sp3
want to see the entire conversation, not just this thread? click on the
link below http://groups.google.com/group/micro...286a59e5978977 want to see the entire conversation, not just this thread? click on the link above granjan wrote: My friend wants to install an additional 2 GB of memory in her Dell XPS 600 which has 2 GB already installed. The manual for her computer says it only supports 2 GB for Windows XP SP3 with 32 bit system. My Dell Dimension 8400 manual says it supports 4 GB memory for Windows XP MCE SP3 with 32 bit. Why do they support different amounts of memory? smlunatick wrote: Windows XP Home is limited to 2 GB of RAM (Microsoft's decision.) Windows XP Professional is supposed to be limited to 4GB of RAM Windows MCE is a "tweaked" verison of Windows XP Pro for enhanced video playing and TV. Since it is based on XP Pro, it gets the XP Pro limit. However, all these different RAM sizes are "moot" since these are based on 32 bit processor coding and at most your will get 3.25 to 3.5 GB of RAM. This is the extreme limit because of most 32 bit processors are limited to this. (Only the limited Windows XP Pro 64bit can start to use the 4GB of RAM. However, support / drivers are very limited.) dennis wrote: It is wrong to blame the CPU. 4GB is an artificial limitation in XP. Shenan Stanley wrote: Some suggested reading: for dennis: http://www.geoffchappell.com/viewer....nse/memory.htm for smlunatick: http://msdn.microsoft.com/en-us/libr...78(VS.85).aspx general: http://blogs.technet.com/markrussino...1/3092070.aspx http://www.ofzenandcomputing.com/zanswers/1079 Enjoy. dennis wrote: Yes, I have seen that one before. Why? Why what? Why did I actually give people references instead of making a comment and dashing off? Why did I seemingly direct one link towards you that seemingly backed up what you said? Why did I do the opposite for smlunatick, showing them the error in their 2GB XP Home comment? Why not? Better to have the information out there than not - and better to actually share it instead of just indirectly reference it without any further comment - IMO. ;-) -- Shenan Stanley MS-MVP -- How To Ask Questions The Smart Way http://www.catb.org/~esr/faqs/smart-questions.html |
#33
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Total memory in XP pro sp3
want to see the entire conversation, not just this thread? click on the
link below http://groups.google.com/group/micro...286a59e5978977 want to see the entire conversation, not just this thread? click on the link above granjan wrote: My friend wants to install an additional 2 GB of memory in her Dell XPS 600 which has 2 GB already installed. The manual for her computer says it only supports 2 GB for Windows XP SP3 with 32 bit system. My Dell Dimension 8400 manual says it supports 4 GB memory for Windows XP MCE SP3 with 32 bit. Why do they support different amounts of memory? smlunatick wrote: Windows XP Home is limited to 2 GB of RAM (Microsoft's decision.) Windows XP Professional is supposed to be limited to 4GB of RAM Windows MCE is a "tweaked" verison of Windows XP Pro for enhanced video playing and TV. Since it is based on XP Pro, it gets the XP Pro limit. However, all these different RAM sizes are "moot" since these are based on 32 bit processor coding and at most your will get 3.25 to 3.5 GB of RAM. This is the extreme limit because of most 32 bit processors are limited to this. (Only the limited Windows XP Pro 64bit can start to use the 4GB of RAM. However, support / drivers are very limited.) dennis wrote: It is wrong to blame the CPU. 4GB is an artificial limitation in XP. Shenan Stanley wrote: Some suggested reading: for dennis: http://www.geoffchappell.com/viewer....nse/memory.htm for smlunatick: http://msdn.microsoft.com/en-us/libr...78(VS.85).aspx general: http://blogs.technet.com/markrussino...1/3092070.aspx http://www.ofzenandcomputing.com/zanswers/1079 Enjoy. dennis wrote: Yes, I have seen that one before. Why? Why what? Why did I actually give people references instead of making a comment and dashing off? Why did I seemingly direct one link towards you that seemingly backed up what you said? Why did I do the opposite for smlunatick, showing them the error in their 2GB XP Home comment? Why not? Better to have the information out there than not - and better to actually share it instead of just indirectly reference it without any further comment - IMO. ;-) -- Shenan Stanley MS-MVP -- How To Ask Questions The Smart Way http://www.catb.org/~esr/faqs/smart-questions.html |
#34
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Total memory in XP pro sp3
dennis wrote: smlunatick wrote: This is the extreme limit because of most 32 bit processors are limited to this. It is wrong to blame the CPU. 4GB is an artificial limitation in XP. Sorry, it's not artificial, its the 32 bit addressing. You have to implement addressing extensions if you want a 32 bit system to address more than 4 GB of memory addresses. |
#35
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Total memory in XP pro sp3
dennis wrote: smlunatick wrote: This is the extreme limit because of most 32 bit processors are limited to this. It is wrong to blame the CPU. 4GB is an artificial limitation in XP. Sorry, it's not artificial, its the 32 bit addressing. You have to implement addressing extensions if you want a 32 bit system to address more than 4 GB of memory addresses. |
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