Only 16GB shows out of 24

[panic36]

Hello,

Before I start I will state that I've looked this up, and maybe I'm not just understanding it, but there seems to be an issue with the memory. I have Windows 7 Pro 64, and there should be no reason I'm capped at 16GB. Here is some details I got from Speccy

MSI-7522 x58 Pro-E motherboard, updated to latest bios.

RAM
Memory slots
Total memory slots 6
Used memory slots 4
Free memory slots 2
Memory
Type DDR3
Size 24576 MBytes
Channels # Triple
DRAM Frequency 797.3 MHz
CAS# Latency (CL) 9 clocks
RAS# to CAS# Delay (tRCD) 9 clocks
RAS# Precharge (tRP) 9 clocks
Cycle Time (tRAS) 24 clocks
Command Rate (CR) 2T
Physical Memory
Memory Usage 16 %
Total Physical 16 GB
Available Physical 13 GB
Total Virtual 32 GB
Available Virtual 29 GB
SPD
Number Of SPD Modules 6
Slot #1
Type DDR3
Size 4096 MBytes
Manufacturer G.Skill
Max Bandwidth PC3-12800 (800 MHz)
Part Number F3-12800CL9-4GBRL
SPD Ext. EPP
XMP--2
Frequency
JEDEC #6
Frequency 838.1 MHz
CAS# Latency 11.0
RAS# To CAS# 11
RAS# Precharge 11
tRAS 30
tRC 41
Voltage 1.500 V
JEDEC #5
Frequency 761.9 MHz
CAS# Latency 10.0
RAS# To CAS# 10
RAS# Precharge 10
tRAS 27
tRC 37
Voltage 1.500 V
JEDEC #4
Frequency 685.7 MHz
CAS# Latency 9.0
RAS# To CAS# 9
RAS# Precharge 9
tRAS 24
tRC 33
Voltage 1.500 V
JEDEC #3
Frequency 609.5 MHz
CAS# Latency 8.0
RAS# To CAS# 8
RAS# Precharge 8
tRAS 22
tRC 30
Voltage 1.500 V
JEDEC #2
Frequency 533.3 MHz
CAS# Latency 7.0
RAS# To CAS# 7
RAS# Precharge 7
tRAS 19
tRC 26
Voltage 1.500 V
JEDEC #1
Frequency 457.1 MHz
CAS# Latency 6.0
RAS# To CAS# 6
RAS# Precharge 6
tRAS 16
tRC 22
Voltage 1.500 V
Slot #2
Type DDR3
Size 4096 MBytes
Manufacturer G.Skill
Max Bandwidth PC3-12800 (800 MHz)
Part Number F3-12800CL9-4GBRL
SPD Ext. EPP
XMP--2
Frequency
JEDEC #6
Frequency 838.1 MHz
CAS# Latency 11.0
RAS# To CAS# 11
RAS# Precharge 11
tRAS 30
tRC 41
Voltage 1.500 V
JEDEC #5
Frequency 761.9 MHz
CAS# Latency 10.0
RAS# To CAS# 10
RAS# Precharge 10
tRAS 27
tRC 37
Voltage 1.500 V
JEDEC #4
Frequency 685.7 MHz
CAS# Latency 9.0
RAS# To CAS# 9
RAS# Precharge 9
tRAS 24
tRC 33
Voltage 1.500 V
JEDEC #3
Frequency 609.5 MHz
CAS# Latency 8.0
RAS# To CAS# 8
RAS# Precharge 8
tRAS 22
tRC 30
Voltage 1.500 V
JEDEC #2
Frequency 533.3 MHz
CAS# Latency 7.0
RAS# To CAS# 7
RAS# Precharge 7
tRAS 19
tRC 26
Voltage 1.500 V
JEDEC #1
Frequency 457.1 MHz
CAS# Latency 6.0
RAS# To CAS# 6
RAS# Precharge 6
tRAS 16
tRC 22
Voltage 1.500 V
Slot #3
Type DDR3
Size 4096 MBytes
Manufacturer G.Skill
Max Bandwidth PC3-12800 (800 MHz)
Part Number F3-12800CL9-4GBRL
SPD Ext. EPP
XMP--2
Frequency
JEDEC #6
Frequency 838.1 MHz
CAS# Latency 11.0
RAS# To CAS# 11
RAS# Precharge 11
tRAS 30
tRC 41
Voltage 1.500 V
JEDEC #5
Frequency 761.9 MHz
CAS# Latency 10.0
RAS# To CAS# 10
RAS# Precharge 10
tRAS 27
tRC 37
Voltage 1.500 V
JEDEC #4
Frequency 685.7 MHz
CAS# Latency 9.0
RAS# To CAS# 9
RAS# Precharge 9
tRAS 24
tRC 33
Voltage 1.500 V
JEDEC #3
Frequency 609.5 MHz
CAS# Latency 8.0
RAS# To CAS# 8
RAS# Precharge 8
tRAS 22
tRC 30
Voltage 1.500 V
JEDEC #2
Frequency 533.3 MHz
CAS# Latency 7.0
RAS# To CAS# 7
RAS# Precharge 7
tRAS 19
tRC 26
Voltage 1.500 V
JEDEC #1
Frequency 457.1 MHz
CAS# Latency 6.0
RAS# To CAS# 6
RAS# Precharge 6
tRAS 16
tRC 22
Voltage 1.500 V
Slot #4
Type DDR3
Size 4096 MBytes
Manufacturer G.Skill
Max Bandwidth PC3-12800 (800 MHz)
Part Number F3-12800CL9-4GBRL
SPD Ext. EPP
XMP--2
Frequency
JEDEC #6
Frequency 838.1 MHz
CAS# Latency 11.0
RAS# To CAS# 11
RAS# Precharge 11
tRAS 30
tRC 41
Voltage 1.500 V
JEDEC #5
Frequency 761.9 MHz
CAS# Latency 10.0
RAS# To CAS# 10
RAS# Precharge 10
tRAS 27
tRC 37
Voltage 1.500 V
JEDEC #4
Frequency 685.7 MHz
CAS# Latency 9.0
RAS# To CAS# 9
RAS# Precharge 9
tRAS 24
tRC 33
Voltage 1.500 V
JEDEC #3
Frequency 609.5 MHz
CAS# Latency 8.0
RAS# To CAS# 8
RAS# Precharge 8
tRAS 22
tRC 30
Voltage 1.500 V
JEDEC #2
Frequency 533.3 MHz
CAS# Latency 7.0
RAS# To CAS# 7
RAS# Precharge 7
tRAS 19
tRC 26
Voltage 1.500 V
JEDEC #1
Frequency 457.1 MHz
CAS# Latency 6.0
RAS# To CAS# 6
RAS# Precharge 6
tRAS 16
tRC 22
Voltage 1.500 V
Slot #5
Type DDR3
Size 4096 MBytes
Manufacturer G.Skill
Max Bandwidth PC3-12800 (800 MHz)
Part Number F3-12800CL9-4GBRL
SPD Ext. EPP
XMP--2
Frequency
JEDEC #6
Frequency 838.1 MHz
CAS# Latency 11.0
RAS# To CAS# 11
RAS# Precharge 11
tRAS 30
tRC 41
Voltage 1.500 V
JEDEC #5
Frequency 761.9 MHz
CAS# Latency 10.0
RAS# To CAS# 10
RAS# Precharge 10
tRAS 27
tRC 37
Voltage 1.500 V
JEDEC #4
Frequency 685.7 MHz
CAS# Latency 9.0
RAS# To CAS# 9
RAS# Precharge 9
tRAS 24
tRC 33
Voltage 1.500 V
JEDEC #3
Frequency 609.5 MHz
CAS# Latency 8.0
RAS# To CAS# 8
RAS# Precharge 8
tRAS 22
tRC 30
Voltage 1.500 V
JEDEC #2
Frequency 533.3 MHz
CAS# Latency 7.0
RAS# To CAS# 7
RAS# Precharge 7
tRAS 19
tRC 26
Voltage 1.500 V
JEDEC #1
Frequency 457.1 MHz
CAS# Latency 6.0
RAS# To CAS# 6
RAS# Precharge 6
tRAS 16
tRC 22
Voltage 1.500 V
Slot #6
Type DDR3
Size 4096 MBytes
Manufacturer G.Skill
Max Bandwidth PC3-12800 (800 MHz)
Part Number F3-12800CL9-4GBRL
SPD Ext. EPP
XMP--2
Frequency
JEDEC #6
Frequency 838.1 MHz
CAS# Latency 11.0
RAS# To CAS# 11
RAS# Precharge 11
tRAS 30
tRC 41
Voltage 1.500 V
JEDEC #5
Frequency 761.9 MHz
CAS# Latency 10.0
RAS# To CAS# 10
RAS# Precharge 10
tRAS 27
tRC 37
Voltage 1.500 V
JEDEC #4
Frequency 685.7 MHz
CAS# Latency 9.0
RAS# To CAS# 9
RAS# Precharge 9
tRAS 24
tRC 33
Voltage 1.500 V
JEDEC #3
Frequency 609.5 MHz
CAS# Latency 8.0
RAS# To CAS# 8
RAS# Precharge 8
tRAS 22
tRC 30
Voltage 1.500 V
JEDEC #2
Frequency 533.3 MHz
CAS# Latency 7.0
RAS# To CAS# 7
RAS# Precharge 7
tRAS 19
tRC 26
Voltage 1.500 V
JEDEC #1
Frequency 457.1 MHz
CAS# Latency 6.0
RAS# To CAS# 6
RAS# Precharge 6
tRAS 16
tRC 22
Voltage 1.500 V

[Tradesman]

What ver of Win are you running, i.e. Win Home Premium only allows/sees 16GB. If running say Ultimate might look to these tips

http://i4memory.com/ramdetect

[Intelguy]

With X64 Windows7,

Ultimate, Enterprise and Professional can all take 192GB Max
Home Premium takes 16GB Max
Home Basic takes 8GB Max
Starter takes 2GB Max

[panic36]

Win 7 pro 64

From what I was told my os can handle 192gb

[panic36]

Screen shot of taskmgr and CPU-Z

[Tradesman]

Win7 may be the limiting factor go to and click START, in the search box, type in MSCONFIG, hit enter, in the menu box click the BOOT tab, click ADVANCED OPTIONS, and make sure MAXIMUM MEMORY box is unchecked

[panic36]

Yeah, I've already verified that when I read the forums for other advice. The maximum memory setting in msconfig is unchecked.

[Tradesman]

Do you have the latest BIOS? Have you checked each stick individually, might be a bad stick causing the problem....could try raising the voltages for the DRAM and the MC, maybe DRAM up + .05 and QPI/VTT up to maybe 1.32 for starters

[panic36]

CPU-Z shows the full 24GB of ram, but the windows sys info doesn't. Does this make sense? I would think if the ram was faulty or not placed properly the CPU-Z app wouldn't show the 24G. Also before installing the ram, I made sure to update to the latest bios release. One thing I was wondering though, is it possible that the memory could be going somewhere else? I think I've noticed that my memory seems to be larger for the geforce 285 that I have. It has 1GB onboard memory. Here is a clip from dxdiag

DAC type: Integrated RAMDAC
Device Key: Enum\PCI\VEN_10DE&DEV_05E3&SUBSYS_11803842&REV_A1
Display Memory: 4069 MB
Dedicated Memory: 997 MB
Shared Memory: 3071 MB

[Tradesman]

It's possible it's allocated it as shared or hardwared reserved, try right clicking on MY COMPUTER, then select properties and see what it says for DRAM...it's a couple spots under the WEI score

[panic36]

in computer properties, installed dram, it shows only 16 GB. Thats why I think only 16 GBs are going to the operating system, and the rest are reserved for some reason.

[Tradesman]

There may be a setting in the BIOS, will try and research it Mon, will prob be in the PM

[panic36]

thanks, i appreciate the help.

[Tradesman]

Be in the field most of the day, hopefully something this PM

[GSKILL TECH]

Check the missing capacity sticky in the DDR3 section.

Thank you
GSKILL TECH