Gordon Posted August 18, 2010 Report Share Posted August 18, 2010 Hi, My new laptop running Windows 7 home premium 64bit and integrated 4GB of ram can only allocate about 3.75gb. Why is that? I am absolutely positive it is a 64bit. Funny thing is that the system RAM: 4GB (3.75GB used) why does that happen? Can I avoid it somehow? Quote Link to comment Share on other sites More sharing options...
Alan2273 Posted August 18, 2010 Report Share Posted August 18, 2010 Is your laptop using integrated graphics, this could account for the missing RAM. Quote Link to comment Share on other sites More sharing options...
Gordon Posted August 19, 2010 Author Report Share Posted August 19, 2010 I believe there is a 128MB dedicated graphics memory (not integrated).If you add it up it kind of makes sense however 64 bit system shall be able to allocate far more memory if I am not mistaken. Quote Link to comment Share on other sites More sharing options...
bludgard Posted August 19, 2010 Report Share Posted August 19, 2010 I believe there is a 128MB dedicated graphics memory (not integrated).If you add it up it kind of makes sense however 64 bit system shall be able to allocate far more memory if I am not mistaken.Maybe this link can help:http://social.technet.microsoft.com/Forums/en-US/w7itprohardware/thread/ed80225c-9d0e-46a5-a700-61a97dfa5182Keep us updated. Quote Link to comment Share on other sites More sharing options...
Gordon Posted August 22, 2010 Author Report Share Posted August 22, 2010 I tried to set in MSCONGIF full 4096 MB rebooted the system and suddenly the system showed RAM : 4GB (usable 2.80 GB) That didnt turn out so well. I switched it back to automatic recognition and I am back to my 3.75GB Quote Link to comment Share on other sites More sharing options...
bludgard Posted August 22, 2010 Report Share Posted August 22, 2010 I tried to set in MSCONGIF full 4096 MB rebooted the system and suddenly the system showed RAM : 4GB (usable 2.80 GB) That didnt turn out so well. I switched it back to automatic recognition and I am back to my 3.75GBThis is normal.64-bit chipsets allocate memory differently than 32-bit counterparts.Something to do with "address, index and base registers".There is a lot to read concerning this architecture.I found some informative and confusing info on this site:--->WikipediaThere's tons more to read.Below is a screenshot of my RAM.Again,It is normal. ;) Quote Link to comment Share on other sites More sharing options...
Gordon Posted August 22, 2010 Author Report Share Posted August 22, 2010 I dont get it. On my desktop I got installed 3GB of ram and all of it is used well enough. also a 64bit systemThe wikipedia article is pretty interesting.I would like to see a system where 8GB are present, how much would it trip than? Quote Link to comment Share on other sites More sharing options...
bludgard Posted August 22, 2010 Report Share Posted August 22, 2010 I would like to see a system where 8GB are present, how much would it trip than?Probably couldn't start the thing because it wouldn't have any available memory. I would guess there would be some formula as to how much of RAM is allocated as reserved for quick access.64-bit systems are supposed to be optimized for 64-bit programs(which are supposed to be faster-but USE the memory instead of letting it sit idly by).You don't notice it a lot when running 32-bit programs because they don't use 64-bit architecture.The rest of it and what I have stated above should not be construed as fact by anyone.Only conjecture from reading about this stuff. Quote Link to comment Share on other sites More sharing options...
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