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Memory report discrepancy in Windows 7

I have windows 7, 64bit with 6, 2gb memory sticks (=12 GB)
control panel-system reports 8 GB (3 GB usable), while CPUID and other programs report true 12 GB.
When I had 6 GB true memory, control panel reported:  4 GB (3 GB usable).  So in either case, control panel reports 3 GB usable despite actual physical memory.

Any idea of the discrepancy?  Am I allocating memory to something else, so control panel can'see or use entire memory?


See two screen snapshots, attached.
Thanks, Larry control memory report CPUID memory report (correct)
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Larry Biederman
Asked:
Larry Biederman
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3 Solutions
 
wolfcamelCommented:
i would start with a bios update
otherwise you may have memory being shared with graphics?
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Larry BiedermanSoftware EngineerAuthor Commented:
Mother board is P6X58D premium.
I just installed latest BIOS update,  Don't know if prevous BIOS version had same error.

My thought (as is yours) is that I have some memory permanently allocated to something else.

Thanks for your thoughts.
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Larry BiedermanSoftware EngineerAuthor Commented:
More info:
Motherboard is ASUS P6X58D premium.

Thanks again for response
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wolfcamelCommented:
what graphics card do you have - or is it onboard? try and change the resolution and see if the memory changes.
try reset bios to default.
a quick google search for you mainboard shows quite a few people with the same problem - so there may be an answer on the asus forums
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wolfcamelCommented:
from what i have just read it appears you have your work cut out..
personally i would opt for a new motherboard! - it may be quicker!
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Larry BiedermanSoftware EngineerAuthor Commented:
Graphics card is ATI Radeon 4600 series.
I currently have factory default settings in BIOS.

Likely you have found issue - the motherboard BIOS settings.
If just a reporting issue, not concerned.  But want to be sure system sees and uses all memory.

Will look over the link info you sent, and respond in morning.
Looks like you earn the points.
Thanks again!!

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Larry BiedermanSoftware EngineerAuthor Commented:
Wolfcamel,

Yep, if the motherboard just falsely reads available memory, no issue. If can't see/use, and not easy fix, I agree, new Motherboard!  I spend $$ for 12 GB, and want it used.

Will report back to you in AM

Thanks much
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nobusCommented:
run memtest86+ and see what it reports  : www.memtestorg
it "can" be you have a memory problem
also what model is the ram ?  you cannot use 1600 models in all slots, see your manual page 2-12 :
http://support.asus.com/Download.aspx?SLanguage=en&m=P6X58D+Premium&p=1&s=29
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Larry BiedermanSoftware EngineerAuthor Commented:
Nobus,
Thanks or your wisdom.  Will check out in AM when alert.

Thanks Much!
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Larry BiedermanSoftware EngineerAuthor Commented:
ALL six Memory chips are 2 GB chips.
All are:
Kingston:  DDR3 6GB 2000 mhz
Model: KHY2000C9D3T1K3/6GX

-thanks for your efforts
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nobusCommented:
well - they are not on the QVL http://support.asus.com/Download.aspx?SLanguage=en&m=P6X58D+Premium&p=1&s=29

the only ones were
KINGSTON  KHX2000C8D3T1K3/6GX(XMP)  DDR3 2000  6GB(3 x 2GB)  DS N/A  Heat-Sink Package  8(1333-9-9-9-21)   1.65
¿

KINGSTON  KHX2000C9D3T1K3/6GX(XMP)  DDR3 2000  6GB(3 x 2GB)  DS  N/A  Heat-Sink Package  9 (1333-9-9-9-  4)  1.65
both work at 1.65V - do yours also work at 1.65 V ?  check in the bios,
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Larry BiedermanSoftware EngineerAuthor Commented:
Findings:
1- control panel, boot screen, and memtest+ all indicate 8 GB memory (12 actually installed)
2- Memtest+, at bottom of screen shows 6, 2048 GB chips installed, but reports 8033 GB memory at top.
3- BIOS DRAM voltage setting is 'auto' .  It says min is 1.2, max is 2.46, standard is 1.5
manually I can set to 1.65 volts.  When I do, BIOS warns "Intel says DRAM voltage over 1.65 can permanently damage the i7 chip"

I confirmed, this memory not on QVL list, but maybe different settings will work.
Due to the $$ invested in al this memory, maybe a motherboard suitable for this memory and chip is another solution.

I've raised point value - thank you both.
more Comments appreciated.
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wolfcamelCommented:
i think you will be playing with this much more to solve.
I noticed a lot of talk about shorting of the back plane causing memory discrepancy so this may be worth looking at also
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nobusCommented:
i believe the model you posted is not correct :  Model: KHY2000C9D3T1K3/6GX  -- nothing to find if i google it
verify and confirm plse
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Larry BiedermanSoftware EngineerAuthor Commented:
My apologies!

Got out the magnifying glass and rechecked all 6 memory sticks:

They are:
Kingston HyperX  
KHX 2000 C9A D3T 1K3 /6GX  (spaces added for readability)

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nobusCommented:
on the QVL - in the meantime, i found this :
so open msconfig -select boot tab
max-memory.png
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Larry BiedermanSoftware EngineerAuthor Commented:
Thanks will try now.
I've read some blogs and many feel those memory sticks need to be clocked down to 1600mhz. My BIOS allows, and I let it set voltage auto.

No help - still shows 8033 GB memory (with 12 installed).
Some say voltage needs to be elevated.

Will try your suggestion, first, right now.

Thanks again
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Larry BiedermanSoftware EngineerAuthor Commented:
nobus,
I made msconfig changes, with DRAM set at 1600 mhz.
(Most on blogs say can't run at 2000 mhz on this board.)
memory now reported at 8 GB, where as before it said 8 GB (2.99 GB usable)  - see my original snapshot above.

Some say, up DRAM voltage.
Trying to find something on web with settings that work.  For my work, 12 GB likely more usefull than 2000 mhz.

Thanks again!!
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Larry BiedermanSoftware EngineerAuthor Commented:
There is no easy solution, but both experts helped some.
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