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Windows 7: 6 gigs of ram but only 3.25 usable


24 Oct 2009   #1

windos 7 pro.
 
 
6 gigs of ram but only 3.25 usable

Hello every one. Just another windows 7 user here. I updated my XP 32 OS to windows 7 64 bit professional. Everything works fine on this upgrade. BUT when i go >start>mycmputer>right click and select properties i see 6 gigs but only 3.25 GB usable. Any way i can use the rest of those gigs. When i bought windows 7 two days ago i bought 2 stick of ram with 2 gigs each stick. so i have (2) 1 gig stick and (2) 2 gig sticks.

Like i sed my PC (Alienware was built in Dic2005) originally was made with 32 OS xp if someone can guide me on how to get my info of my mother board I will be glad to follows those steps so i can post them here and hopefully gets some help. If not I just will return the extra gigs I bought.

PS- I reinstall windows 7 from scratched but with OS 32 bit and I could see the same 6 gigs but only 3.25 gigs usable.


Thanks!

My System SpecsSystem Spec
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24 Oct 2009   #2

Win7 Enterprise, Win7 x86 (Ult 7600), Win7 x64 Ult 7600, TechNet RTM on AMD x64 (2.8Ghz)
 
 

My System SpecsSystem Spec
25 Oct 2009   #3

Windows 7 Pro RTM
 
 

Quote   Quote: Originally Posted by fox7seven View Post
Hello every one. Just another windows 7 user here. I updated my XP 32 OS to windows 7 64 bit professional. Everything works fine on this upgrade. BUT when i go >start>mycmputer>right click and select properties i see 6 gigs but only 3.25 GB usable. Any way i can use the rest of those gigs. When i bought windows 7 two days ago i bought 2 stick of ram with 2 gigs each stick. so i have (2) 1 gig stick and (2) 2 gig sticks.

Like i sed my PC (Alienware was built in Dic2005) originally was made with 32 OS xp if someone can guide me on how to get my info of my mother board I will be glad to follows those steps so i can post them here and hopefully gets some help. If not I just will return the extra gigs I bought.

PS- I reinstall windows 7 from scratched but with OS 32 bit and I could see the same 6 gigs but only 3.25 gigs usable.


Thanks!
Need more info to go on. It could very well be that your mobo can only handle 4 GB. Looking at the support info for your patrticular computer on Alienware's site might also give you the answer you seek.
My System SpecsSystem Spec
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25 Oct 2009   #4

Windows 7 Home Premium x64
 
 

My thoughts are that this may be a BIOS issue. I had a similar problem when I upgraded my RAM memory to 4Gb.

Look in your BIOS for a "Memory Remap Feature" which will probably be disabled. Enable this and Windows should see and be able to access all avaiable memory.

The downside is that you may need to reinstall Windows 7 64bit for this to work.
My System SpecsSystem Spec
25 Oct 2009   #5

Windows 7 RTM
 
 

windows 7 32bit will only read up to 3.xx gbs of ram anyway. sounds like a possible bios issue. get into your bios and see how many gbs bios sees. it may be something as simple as performing a bios upgrade if it only sees 4gbs for it to see the full 6gbs.
My System SpecsSystem Spec
25 Oct 2009   #6

Win 8 Release candidate 8400
 
 

Quote   Quote: Originally Posted by b00st3d View Post
windows 7 32bit will only read up to 3.xx gbs of ram anyway. sounds like a possible bios issue. get into your bios and see how many gbs bios sees. it may be something as simple as performing a bios upgrade if it only sees 4gbs for it to see the full 6gbs.

OP is 64bit

Ken
My System SpecsSystem Spec
25 Oct 2009   #7

seven
 
 

I have the same doubt!!!!!!

4gb of ram but only 2.5gb available!!





is this normal or a bad configuration??
My System SpecsSystem Spec
25 Oct 2009   #8

Windows 8.1 Professional x64
 
 

Quote   Quote: Originally Posted by raznal View Post
I have the same doubt!!!!!!

4gb of ram but only 2.5gb available!!





is this normal or a bad configuration??
Are you referring to where it says "Total", "En Cache" and "Disponible"?

You're task manager is reporting your RAM correctly. You have 4GB available. 2.5GB is being cached with SuperFetch (which is what Windows 7 does), and you have 2.5GB RAM available to use. The 42MB of RAM you have free is the amount not being used by SuperFetch.
My System SpecsSystem Spec
03 Mar 2010   #9

Windows 7
 
 

I had the same problem except I only had 4 GB of RAM installed.

To fix it, I had to enabled the following in my BIOS:
S/W Memory Hole Mapping
H/W Memory Hole Mapping

Hope it helps
My System SpecsSystem Spec
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 6 gigs of ram but only 3.25 usable




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