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Windows 7: x64 Win7 is reporting only 3GB out of 4GB RAM

10 Mar 2010   #21
whs
Microsoft MVP

Vista, Windows7, Mint Mate, Zorin, Windows 8
 
 

Guys, this is too hectic. The OP has a 64bit system. So none of the 32bit explanations apply. The Resource Monitor reports 1GB as hardware reserved. So the full 4GBs are there. Question is only which hardware has reserved this 1GB.


My System SpecsSystem Spec
.
10 Mar 2010   #22
DreemWarrior

Windows 7 ultimate X64
 
 

Quote   Quote: Originally Posted by whs View Post
Guys, this is too hectic. The OP has a 64bit system. So none of the 32bit explanations apply. The Resource Monitor reports 1GB as hardware reserved. So the full 4GBs are there. Question is only which hardware has reserved this 1GB.
True. I think i shall leave this one to all you heavyweights in here, but dont think I'm not paying attention...
My System SpecsSystem Spec
10 Mar 2010   #23
whs
Microsoft MVP

Vista, Windows7, Mint Mate, Zorin, Windows 8
 
 

Quote   Quote: Originally Posted by DreemWarrior View Post
Quote   Quote: Originally Posted by whs View Post
Guys, this is too hectic. The OP has a 64bit system. So none of the 32bit explanations apply. The Resource Monitor reports 1GB as hardware reserved. So the full 4GBs are there. Question is only which hardware has reserved this 1GB.
True. I think i shall leave this one to all you heavyweights in here, but dont think I'm not paying attention...
Dreamwarrior, no need to pout. I was only suggesting that we work with the facts we know and approach the problem systematically. And you are, of course, very welcome to participate. The only "heavyweights" around here are heavy in pounds.
My System SpecsSystem Spec
.

10 Mar 2010   #24
DreemWarrior

Windows 7 ultimate X64
 
 

Quote   Quote: Originally Posted by whs View Post
Quote   Quote: Originally Posted by DreemWarrior View Post
Quote   Quote: Originally Posted by whs View Post
Guys, this is too hectic. The OP has a 64bit system. So none of the 32bit explanations apply. The Resource Monitor reports 1GB as hardware reserved. So the full 4GBs are there. Question is only which hardware has reserved this 1GB.
True. I think i shall leave this one to all you heavyweights in here, but dont think I'm not paying attention...
Dreamwarrior, no need to pout. I was only suggesting that we work with the facts we know and approach the problem systematically. And you are, of course, very welcome to participate. The only "heavyweights" around here are heavy in pounds.
HAHA well said. I"fit" in that category...
My System SpecsSystem Spec
10 Mar 2010   #25
asuh

Windows 7 RTM
 
 

Quote   Quote: Originally Posted by DreemWarrior View Post
Here is the issue...


"If you are running 64-bit Windows, you may have to live with it. Depending on your motherboard's chipset, your system may support memory remapping. If so, you will be able to use all 4GB of RAM. Detailed:
Due to an architectural decision made long ago, if you have 4GB of physical RAM installed, Windows is only able to report a portion of the physical 4GB of RAM (ranges from ~2.75GB to 3.5GB depending on the devices installed, motherboard's chipset & BIOS). "
Read more....
TabBlogger : The 3GB-not-4GB RAM problem

Hope this helps explain the memory issue for you.
Here's the answer. ASUS P5B has a memory mapping feature. Mine was disabled for some reason. When I enabled it, I now see all 4GB of RAM in Windows. That's really weird but I'm glad he found this!
My System SpecsSystem Spec
10 Mar 2010   #26
whs
Microsoft MVP

Vista, Windows7, Mint Mate, Zorin, Windows 8
 
 

Very good. I am glad you got it sorted out.
My System SpecsSystem Spec
10 Mar 2010   #27
DreemWarrior

Windows 7 ultimate X64
 
 

Wow...you mean I was on target for that one?? Sweet.
My System SpecsSystem Spec
11 Mar 2010   #28
Lex87

Win7
 
 

This does sound like a chunk of RAM mapped to his display adapter but a whole gig??

Seems a bit too large of a block for even a crappy card?
My System SpecsSystem Spec
23 Apr 2011   #29
5AqUa5

Windows 7 Professional 64bit
 
 
I GOT THE SAME PROBLEM HELP

Ive still got THE SAME PROBLEM WITH MY UPGRADED PC. Windows 7 Professional 64bit (Upgraded from Windows XP Home 32bit). 4096MB Centon PC3200 Dual Channel DDR Memory (3-3-3-8) (4x1GB) (Upgraded from 2x256MB Dual Channel DDR) installed on an MS-7093 motherboard (RS-480M2-IL) with an AMD Athlon 64 3200+ 512MB L2 Cache that has an integrated ATI Radeon Xpress 200 chipset and integrated SB400 (AC97') audio chipset. Ive recently installed a Galaxy NVidia powered GeForce GT430 with 1024DDR3 onboard memory. Pretty sure the ATI Radeon Xpress 200 was uninstalled (not in device manager). And I dont know how to optimally set my BIOS options. Phoenix AWARD 6.00 PG (No updates from MSIs Live Update, and the one from Emachines worked, but I saw no changes). My Memory Installed: 4GB (3.12GB Usable), 4GB reading in CPUIDs CPUZ at 199MHz as Dual Channel DDR (but at a timing of 3-4-2-8 {after switching latency in BIOS from 2.5-3}), Street Fighter 4 Benchmark reading 6256, AV. 34 FPS, memory:3198, video memory:1024, and Im pretty sure my BIOS also reads 3275776K Total Memory..... WHY?!
http://img847.imageshack.us/img847/1613/1000161.jpg
http://img28.imageshack.us/img28/1215/1000160ij.jpg
http://img251.imageshack.us/img251/8391/1000159b.jpg
http://img130.imageshack.us/img130/5633/1000158y.jpg
http://img857.imageshack.us/img857/5867/1000157b.jpg
http://img217.imageshack.us/img217/8249/1000156m.jpg
ImageShack® - Online Photo and Video Hosting
ImageShack® - Online Photo and Video Hosting
ImageShack® - Online Photo and Video Hosting
My System SpecsSystem Spec
23 Apr 2011   #30
Orbital Shark

 
 

Quote   Quote: Originally Posted by 5AqUa5 View Post
Ive still got THE SAME PROBLEM WITH MY UPGRADED PC. Windows 7 Professional 64bit (Upgraded from Windows XP Home 32bit). 4096MB Centon PC3200 Dual Channel DDR Memory (3-3-3-8) (4x1GB) (Upgraded from 2x256MB Dual Channel DDR) installed on an MS-7093 motherboard (RS-480M2-IL) with an AMD Athlon 64 3200+ 512MB L2 Cache that has an integrated ATI Radeon Xpress 200 chipset and integrated SB400 (AC97') audio chipset. Ive recently installed a Galaxy NVidia powered GeForce GT430 with 1024DDR3 onboard memory. Pretty sure the ATI Radeon Xpress 200 was uninstalled (not in device manager). And I dont know how to optimally set my BIOS options. Phoenix AWARD 6.00 PG (No updates from MSIs Live Update, and the one from Emachines worked, but I saw no changes). My Memory Installed: 4GB (3.12GB Usable), 4GB reading in CPUIDs CPUZ at 199MHz as Dual Channel DDR (but at a timing of 3-4-2-8 {after switching latency in BIOS from 2.5-3}), Street Fighter 4 Benchmark reading 6256, AV. 34 FPS, memory:3198, video memory:1024, and Im pretty sure my BIOS also reads 3275776K Total Memory..... WHY?!
http://img847.imageshack.us/img847/1613/1000161.jpg
http://img28.imageshack.us/img28/1215/1000160ij.jpg
http://img251.imageshack.us/img251/8391/1000159b.jpg
http://img130.imageshack.us/img130/5633/1000158y.jpg
http://img857.imageshack.us/img857/5867/1000157b.jpg
http://img217.imageshack.us/img217/8249/1000156m.jpg
ImageShack® - Online Photo and Video Hosting
ImageShack® - Online Photo and Video Hosting
ImageShack® - Online Photo and Video Hosting
Hi, welcome to the forums

If you have a decent GFX card you may want to reduce you're AGP aperture size (pic 4) to see if that increases your available memory.

Also, Windows will, be default, allocate memory to some hardware devices. If you click then type resmon and press enter, under memory how much is showing as HardwareReserved?
My System SpecsSystem Spec
Reply

 x64 Win7 is reporting only 3GB out of 4GB RAM




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