M.F.D.K Posted March 4, 2009 Share Posted March 4, 2009 I installed Windows 7 build 7048 64bit, I was just wondering is it correct that it shows 3.25GB usable...? :huh: Link to comment https://www.neowin.net/forum/topic/742730-windows-7-400gb-ram-325gb-usable/ Share on other sites More sharing options...
REM2000 Posted March 4, 2009 Share Posted March 4, 2009 might be a limitation of either your BIOS or motherboard chipset. I have the same problem on a computer which is setup with Windows 2008 x64, the motherboard has the limitation and my manufacturer (gigabyte) of updating the BIOS. Link to comment https://www.neowin.net/forum/topic/742730-windows-7-400gb-ram-325gb-usable/#findComment-590661196 Share on other sites More sharing options...
Chsoriano Posted March 4, 2009 Share Posted March 4, 2009 I'm assuming it's a BIOS setting that you need to adjust. Link to comment https://www.neowin.net/forum/topic/742730-windows-7-400gb-ram-325gb-usable/#findComment-590661200 Share on other sites More sharing options...
DigitalE Posted March 4, 2009 Share Posted March 4, 2009 Perhaps some of your RAM is being shared with an integrated GPU? Link to comment https://www.neowin.net/forum/topic/742730-windows-7-400gb-ram-325gb-usable/#findComment-590661204 Share on other sites More sharing options...
Chris123NT Posted March 4, 2009 Share Posted March 4, 2009 Do you have a intel 945 chipset? If so the chipset itself is only able to do 32-bit memory addressing so there's nothing you can do, except buy a new mobo. Link to comment https://www.neowin.net/forum/topic/742730-windows-7-400gb-ram-325gb-usable/#findComment-590661206 Share on other sites More sharing options...
M.F.D.K Posted March 4, 2009 Author Share Posted March 4, 2009 (edited) I have Nvidia 7300GT 512MB, so no sharing there, i don't have an Intel Chipset. I suppose its to do with the bios, its just my testing machine so its not that important but i was curious to know if that's got to be a problem, it shows fine on vista 64. I think its a cheap motherboard, bought it a while ago, I've tried doodling around with overclocking before and it was a no go, so i guess it is the bios limitation. Edited March 4, 2009 by M.F.D.K Link to comment https://www.neowin.net/forum/topic/742730-windows-7-400gb-ram-325gb-usable/#findComment-590661240 Share on other sites More sharing options...
nautiqueskier Posted March 4, 2009 Share Posted March 4, 2009 Windows Vista SP1 reports ram installed in the system, NOT ram actually available. Windows Vista SP0 reported ram usable. Windows 7 reports both ram installed and ram usable. Link to comment https://www.neowin.net/forum/topic/742730-windows-7-400gb-ram-325gb-usable/#findComment-590661270 Share on other sites More sharing options...
XerXis Posted March 4, 2009 Share Posted March 4, 2009 You are using a 32 bit OS. Which means at the most you can address 4 gigabyte of memory. 2^32 However as the main ram isn't the only memory in your computer you have to substract the videomemory and other IO memory from your main memory, which apparently leaves you with 3.25 gb of USABLE memory. That's it, nothing wrong with your hardware, nothing wrong with windows, pure mathematics. Use windows 7 64 bit and you can use all your memory. A CPU just sees all your memory (RAM, GPU memory, network controller memory, IO devices) as one big block of memory, in the case of a 32 bit system this block has a maximum size of 2^32 bits which is more or less 4 gigabyte. Link to comment https://www.neowin.net/forum/topic/742730-windows-7-400gb-ram-325gb-usable/#findComment-590661288 Share on other sites More sharing options...
M.F.D.K Posted March 4, 2009 Author Share Posted March 4, 2009 Well cheers anyway pals. :cool: Link to comment https://www.neowin.net/forum/topic/742730-windows-7-400gb-ram-325gb-usable/#findComment-590661294 Share on other sites More sharing options...
NEVER85 Posted March 4, 2009 Share Posted March 4, 2009 XerXis said: You are using a 32 bit OS. Which means at the most you can address 4 gigabyte of memory. 2^32However as the main ram isn't the only memory in your computer you have to substract the videomemory and other IO memory from your main memory, which apparently leaves you with 3.25 gb of USABLE memory. That's it, nothing wrong with your hardware, nothing wrong with windows, pure mathematics. Use windows 7 64 bit and you can use all your memory No he's not, check what he posted. Clearly says "64-bit operating system". Link to comment https://www.neowin.net/forum/topic/742730-windows-7-400gb-ram-325gb-usable/#findComment-590661296 Share on other sites More sharing options...
M.F.D.K Posted March 4, 2009 Author Share Posted March 4, 2009 XerXis said: You are using a 32 bit OS. Which means at the most you can address 4 gigabyte of memory. 2^32However as the main ram isn't the only memory in your computer you have to substract the videomemory and other IO memory from your main memory, which apparently leaves you with 3.25 gb of USABLE memory. That's it, nothing wrong with your hardware, nothing wrong with windows, pure mathematics. Use windows 7 64 bit and you can use all your memory Mate, i think you didn't read my post...? It is 64bit that I'm using. Link to comment https://www.neowin.net/forum/topic/742730-windows-7-400gb-ram-325gb-usable/#findComment-590661302 Share on other sites More sharing options...
XerXis Posted March 4, 2009 Share Posted March 4, 2009 FrozenEclipse said: No he's not, check what he posted. Clearly says "64-bit operating system". hmmm, looked over it, my bad :blush: . In that case ome 32 bit driver probably or indeed bios limitation of 4 gigabyte? Link to comment https://www.neowin.net/forum/topic/742730-windows-7-400gb-ram-325gb-usable/#findComment-590661304 Share on other sites More sharing options...
Guest xiphi Posted March 4, 2009 Share Posted March 4, 2009 XerXis said: You are using a 32 bit OS. Which means at the most you can address 4 gigabyte of memory. 2^32However as the main ram isn't the only memory in your computer you have to substract the videomemory and other IO memory from your main memory, which apparently leaves you with 3.25 gb of USABLE memory. That's it, nothing wrong with your hardware, nothing wrong with windows, pure mathematics. Use windows 7 64 bit and you can use all your memory Did you even look at the image provided? Link to comment https://www.neowin.net/forum/topic/742730-windows-7-400gb-ram-325gb-usable/#findComment-590661306 Share on other sites More sharing options...
M.F.D.K Posted March 4, 2009 Author Share Posted March 4, 2009 XerXis said: hmmm, looked over it, my bad :blush: . In that case ome 32 bit driver probably or indeed bios limitation of 4 gigabyte? Not even sure if its the bios, I just checked it, and the bios is actually reading as something 4096MB. As i said in my previous post, i remember trying to fiddle around with overclocking and the motherboard is so limited that it doesn't allow one bit of overclocking, whether it would be GPU. CPU or RAM. Link to comment https://www.neowin.net/forum/topic/742730-windows-7-400gb-ram-325gb-usable/#findComment-590661322 Share on other sites More sharing options...
nautiqueskier Posted March 4, 2009 Share Posted March 4, 2009 What model of computer do you have? (or if you built it, what type of motherboard) and I'll try and look into it. I'm getting curious about this :D No Core 2 Quad architecture should be based on a 32-bit chipset far as I know. Link to comment https://www.neowin.net/forum/topic/742730-windows-7-400gb-ram-325gb-usable/#findComment-590661332 Share on other sites More sharing options...
RadishTM Veteran Posted March 4, 2009 Veteran Share Posted March 4, 2009 See if there is an option for "Memory Remapping" under the BIOS, it should be enabled for 64-bit OS'es but disabled for 32-bit OS'es. Radish? Link to comment https://www.neowin.net/forum/topic/742730-windows-7-400gb-ram-325gb-usable/#findComment-590661338 Share on other sites More sharing options...
noroom Posted March 4, 2009 Share Posted March 4, 2009 Since this will probably affect other people in the near future (with RAM being so cheap nowadays), it would be very nice if you if you could try to fix it and post the fix, MFDK. Link to comment https://www.neowin.net/forum/topic/742730-windows-7-400gb-ram-325gb-usable/#findComment-590661342 Share on other sites More sharing options...
M.F.D.K Posted March 4, 2009 Author Share Posted March 4, 2009 Ames said: What model of computer do you have? (or if you built it, what type of motherboard) and I'll try and look into it.I'm getting curious about this :D No Core 2 Quad architecture should be based on a 32-bit chipset far as I know. Its my own build for testing purpose only. Link to comment https://www.neowin.net/forum/topic/742730-windows-7-400gb-ram-325gb-usable/#findComment-590661358 Share on other sites More sharing options...
REM2000 Posted March 4, 2009 Share Posted March 4, 2009 have you updated your BIOS to the latest version from the manufacturers web site? Link to comment https://www.neowin.net/forum/topic/742730-windows-7-400gb-ram-325gb-usable/#findComment-590661360 Share on other sites More sharing options...
M.F.D.K Posted March 4, 2009 Author Share Posted March 4, 2009 noroom said: Since this will probably affect other people in the near future (with RAM being so cheap nowadays), it would be very nice if you if you could try to fix it and post the fix, MFDK. Yeah will do that. REM2000 said: have you updated your BIOS to the latest version from the manufacturers web site? Yeah that has been done. Radish? said: See if there is an option for "Memory Remapping" under the BIOS, it should be enabled for 64-bit OS'es but disabled for 32-bit OS'es.Radish? I'm going to have a look at it right now. Link to comment https://www.neowin.net/forum/topic/742730-windows-7-400gb-ram-325gb-usable/#findComment-590661368 Share on other sites More sharing options...
jjrambo Posted March 4, 2009 Share Posted March 4, 2009 Check BIOS Link to comment https://www.neowin.net/forum/topic/742730-windows-7-400gb-ram-325gb-usable/#findComment-590661386 Share on other sites More sharing options...
nautiqueskier Posted March 4, 2009 Share Posted March 4, 2009 Okay just looking at the product specifications for this board, is your Integrated Video card (regardless of whether you are using it or not) actually disabled in the BIOS? Link to comment https://www.neowin.net/forum/topic/742730-windows-7-400gb-ram-325gb-usable/#findComment-590661408 Share on other sites More sharing options...
M.F.D.K Posted March 4, 2009 Author Share Posted March 4, 2009 I just checked the bios, there isn't such a feature as "Memory Remapping" or anything that has to do with 64-bit. Ames said: Okay just looking at the product specifications for this board, is your Integrated Video card (regardless of whether you are using it or not) actually disabled in the BIOS? Its automatically disabled when I connect my PCI/e. I have to go now but i will report back about this seee if i find a solution. Link to comment https://www.neowin.net/forum/topic/742730-windows-7-400gb-ram-325gb-usable/#findComment-590661422 Share on other sites More sharing options...
ShortFuse Posted March 4, 2009 Share Posted March 4, 2009 Same thing happened to me. https://www.neowin.net/forum/index.php?showtopic=742164 Link to comment https://www.neowin.net/forum/topic/742730-windows-7-400gb-ram-325gb-usable/#findComment-590661552 Share on other sites More sharing options...
[xan] Posted March 4, 2009 Share Posted March 4, 2009 You have to check with your manufacturer website to see the full specification, but from what I know about other P4M900 motherboards the P4M900 chipset supports maximum 4GB of memory (meaning it's a 32bit chipset). Link to comment https://www.neowin.net/forum/topic/742730-windows-7-400gb-ram-325gb-usable/#findComment-590661612 Share on other sites More sharing options...
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