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
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
Comment