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Windows 7: Who do I believe - Windows or CPUZ

24 May 2011   #1
jimbo45

Linux CENTOS 7 / various Windows OS'es and servers
 
 
Who do I believe - Windows or CPUZ

Hi all

I put a 4GB module into my Acer netbook -- works just fine but :

Windows 7 says I have 4 GB RAM in the computer

BIOS says I have 4 GB RAM in the computer


CPU-Z says I have 2 GB RAM in the computer

What gives ???


Judging by performance even on this farly low powered machine I can bring up 2 XP Virtual machines on it concurrently with reasonable performance !!!! which I couldn't do before upgrading the memory. I assume it IS using 4 GB.

However CPU_Z is usually reliable so is there an INFALLIBLE test to see how much Windows is actually seeing and using.

screenshots enc.




Attached Images
Who do I believe - Windows or CPUZ-cpuz.png Who do I believe - Windows or CPUZ-w7.png 
My System SpecsSystem Spec
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24 May 2011   #2
Bill2

Windows 7 x64 pro/ Windows 7 x86 Pro/ XP SP3 x86
 
 

Try SIW.
My System SpecsSystem Spec
24 May 2011   #3
Airbot

Windows 7 Ultimate x64 SP1
 
 

Quote   Quote: Originally Posted by jimbo45 View Post
so is there an INFALLIBLE test to see how much Windows is actually seeing and using.

Yeah. It's called msinfo32.exe.

Who do I believe - Windows or CPUZ-capture.jpg


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24 May 2011   #4
jimbo45

Linux CENTOS 7 / various Windows OS'es and servers
 
 

Thanks


Cheers
jimbo
My System SpecsSystem Spec
24 May 2011   #5
pantsaregood

Windows 7 Ultimate x64
 
 

CPUZ and Windows aren't disagreeing. Notice that Windows says "2.75GB usable?"

If you look at the SPD info on the 4GB module, it probably says "4GB."

You can only address 2.75GB (which is something like 2816MB, if not exactly) of RAM in Windows for whatever reason. You may be using a 32-bit operating system. It could be anything.
My System SpecsSystem Spec
24 May 2011   #6
jimdandy

Windows 7 Ultimate x64
 
 

Quote   Quote: Originally Posted by pantsaregood View Post
CPUZ and Windows aren't disagreeing. Notice that Windows says "2.75GB usable?"
I actually think they are disagreeing . . the only reason for the discrepancy I can think of is if you have on on-board graphics adapter and a portion of your system RAM is being used by the adapter . .
My System SpecsSystem Spec
24 May 2011   #7
essenbe

Windows 10 Pro/ Windows 10 Pro Insider
 
 

Quote   Quote: Originally Posted by Airbot View Post
Quote   Quote: Originally Posted by jimbo45 View Post
so is there an INFALLIBLE test to see how much Windows is actually seeing and using.

Yeah. It's called msinfo32.exe.

Attachment 156160
Yes. CPUz I believe. It is showing what windows is seeing. Cpuz is showing 2818MB of ram. If it was onlt\y showing 2GB it would be 2048MB. So, it is showing the amount windows is seeing as useable. Thats my opinion.
My System SpecsSystem Spec
24 May 2011   #8
1Bowtie

Windows 7 Home Premium 64 bit
 
 

I don't think they are disagreeing at all it's showing 2gb's single channel, not dual channel.
My System SpecsSystem Spec
24 May 2011   #9
sygnus21

Windows 10 Pro
 
 

Actually CPU-Z is not correct. Why is the question??? Here's my CPU-Z showing my 6gig of memory installed.

Who do I believe - Windows or CPUZ-mem-speed.jpg

Jimbo update to CPU-Z version 1.56. Notice you have v1.52

Also notice is says single channel. Don't know anything about notebook memory so it's possible CPU-Z could be confused? But that's just a guess as I can't see how CPU-Z wouldn't read a notebook correctly (again, a guess).

Anyway updating to the latest version should confirm.

My two cents.


My System SpecsSystem Spec
24 May 2011   #10
jimdandy

Windows 7 Ultimate x64
 
 

Quote   Quote: Originally Posted by sygnus21 View Post
Actually CPU-Z is NOT correct. Why is the question??? Here's my CPU-Z showing my 6gig of memory installed.
Exactly. That field in CPU-Z shows installed memory, not available memory . . . hence why I'm curious to know if you are using on on-board graphics adapter jimbo45?
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 Who do I believe - Windows or CPUZ




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