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12GB RAM only 8GB usable
I'm a newbie to posting in a forum, so I hope I give all the needed information.
Last weekend I transferred all my "parts" from one case to a new one. When I checked "System"... I noticed under Installed Memory (RAM) 12.0 GB (8.00 GB usable). I found and tried a couple ideas on the internet to try and fix this issue. I reseated the memory (no change). I tried only 6 GB at a time (all memory worked, but only with 6 GB at a time). I removed CPU and inspected pins on motherboard. As far as I could tell, none were bent. I found a little thermal paste on the edge/bottom of the CPU, so I cleaned it and the motherboard pins and reinstalled everything. I now had 12 GB of usable RAM.
I tried my first overclock yesterday and ran LinX (stable at 3.66 GHz). This morning when I was about to run Prime95, I went to "System" and again noticed under Installed Memory (RAM) 12.0 GB (8.00 GB usable). I went back into BIOS and switched back to Optimize Settings, but still only had 8 GB usable RAM.
I am quite frustrated right now. Any ideas on what I could possible do to get this working right would be greatly appreciated.
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OK... this is a little strange, but I wanted to post it because SOMEONE has to know what's going on. I read in a forum about an issue like mine to go into msconfig and make sure under Boot tab and Advanced Options that Maximum Memory WAS NOT checked. WELL...mine was not checked, but I checked it to see what affect it would have on my issue. After a restart it changed to 12 GB (11.5 GB usable). I went back in and unchecked Maximum Memory and restarted and I now have 12 Gb of memory showing and able to be used. I'm going to reset the setting in BIOS for the overclock and see what happens. Anyone know why I'm having this issue??
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I overclocked the computer back to 3.66GHz and experienced the loss of memory. I did exactly like I did in my previous post and am back to 12GB of usable RAM. I'm "assuming" it has to do with a bad setting... probably voltage, but I am stumped. Below are my overclocked settings. I am hoping someone will see this, find the problem, and help me out. If you look down on Channel C Standard and Advanced Timings... there are none.
Thanks everyone!
CPU Clock Ratio [19x]
CPU Frequency: 3.66GHz (193x19)
Advanced CPU Features [Press Enter]:
CPU Clock Ratio [19x]
CPU Frequency: 3.66GHz (193x19)
Intel(R) Turbo Boost Tech [Enabled]
CPU Cores Enabled [All]
CPU Multi-Threading [Enabled]
CPU Enhanced Halt (C1E) [Enabled]
C3/C6/C7 State Support [Disabled]
CPU Thermal Monitor [Enabled]
CPU EIST Function [Enabled]
Virtualization Technology [Enabled]
Bi-Directional PROCHOT [Enabled]
Virtualization Technology [Enabled]
QPI Link Ratio [Auto]
QPI Link Speed [6.94ghz]
Uncore & QPI Features [Press Enter]:
QPI Clock Ratio [Auto]
QPI Link Speed: 6.94ghz
Uncore Clock Ratio [x18]
Uncore Frequency 3474MHz
Isonchronous Frequency [Enabled]
Base Clock (BCLK) Control [Enabled]
BCLK Frequency (MHz) [193]
Advanced Clock Control [Press Enter]:
>>>>> Standard Clock Control
Base Clock (BCLK) Control [Enabled]
BCLK Frequency (MHz) [193]
PCI Express Frequency (MHz) [auto]
C.I.A.2 [Disabled]
>>>>> Advanced Clock Control
CPU Clock Drive [ 800mV]
PCI Express Clock Drive [ 900mV]
CPU Clock Skew [ 0ps]
IOH Clock Skew [ 0ps]
Performance Enhance [Standard]
Extreme Memory Profile (X.M.P.) [Profile1]
System Memory Multiplier (SPD) [8.0]
Memory Frequency (MHz) 1600 1544
DRAM Timing Selectable (SPD) [Auto]
Profile DDR Voltage 1.6V
Profile QPI Voltage 1.35V
Channel A
CAS Latency Time 9 [Auto]
tRCD 9 [Auto]
tRP 9 [Auto]
tRAS 24 [Auto]
Command Rate (CMD) 2 [Auto]
Channel B
CAS Latency Time 9 [Auto]
tRCD 9 [Auto]
tRP 9 [Auto]
tRAS 24 [Auto]
Command Rate (CMD) 2 [Auto]
Channel C
CAS Latency Time 9 [Auto]
tRCD - [Auto]
tRP - [Auto]
tRAS - [Auto]
Command Rate (CMD) - [Auto]
Advanced DRAM Features [Press Enter]:
Performance Enhance [Standard]
Extreme Memory Profile (X.M.P.) [Profile1]
System Memory Multiplier (SPD) [8.0]
Memory Frequency (MHz) 1600 1544
DRAM Timing Selectable (SPD) [Auto]
Profile DDR Voltage 1.6V
Profile QPI Voltage 1.35V
x Channel Interleaving 6 Auto
x Rank Interleaving 4 Auto
>>>>> Channel A
Channel A Timing Settings [Press Enter]:
>>>>> Channel A Standard Timing Control
x CAS Latency Time 9 Auto
tRCD 9 Auto
tRP 9 Auto
tRAS 24 Auto
>>>>> Channel A Advanced Timing Control
x tRC 41 Auto
x tRRD 6 Auto
x tWTR 6 Auto
x tWR 12 Auto
x tWTP 24 Auto
x tWL 8 Auto
x tRFC 88 Auto
x tRTP 6 Auto
x tFAW 30 Auto
x Command Rate (CMD) 2 Auto
>>>>> Channel A Misc Timing Control
x B2B CAS Delay - Auto
x Round Trip Latency 67 Auto
>>>>> Channel A
Channel A Turnaround Settings [Press Enter]:
>>>>> Channel A Writes Followed by Reads
x Different DIMMs 6 Auto
x Different Ranks 6 Auto
x On The Same Rank 9 Auto
>>>>> Channel A Reads Followed by Writes
x Different DIMMs 9 Auto
x Different Ranks 9 Auto
x On The Same Rank 9 Auto
>>>>> Channel A Reads Followed by Reads
x Different DIMMs 6 Auto
x Different Ranks 5 Auto
x On The Same Rank 1 Auto
>>>>> Channel A Writes Followed by Writes
x Different DIMMs 6 Auto
x Different Ranks 6 Auto
x On The Same Rank 1 Auto
>>>>> Channel B
Channel B Timing Settings [Press Enter]:
>>>>> Channel B Standard Timing Control
x CAS Latency Time 9 Auto
tRCD 9 Auto
tRP 9 Auto
tRAS 24 Auto
>>>>> Channel B Advanced Timing Control
x tRC 41 Auto
x tRRD 6 Auto
x tWTR 6 Auto
x tWR 12 Auto
x tWTP 24 Auto
x tWL 8 Auto
x tRFC 88 Auto
x tRTP 6 Auto
x tFAW 30 Auto
x Command Rate (CMD) 2 Auto
>>>>> Channel B Misc Timing Control
x B2B CAS Delay - Auto
x Round Trip Latency 70 Auto
>>>>> Channel B
Channel B Turnaround Settings [Press Enter]:
>>>>> Channel B Writes Followed by Reads
x Different DIMMs 6 Auto
x Different Ranks 6 Auto
x On The Same Rank 9 Auto
>>>>> Channel B Reads Followed by Writes
x Different DIMMs 9 Auto
x Different Ranks 9 Auto
x On The Same Rank 9 Auto
>>>>> Channel B Reads Followed by Reads
x Different DIMMs 6 Auto
x Different Ranks 5 Auto
x On The Same Rank 1 Auto
>>>>> Channel B Writes Followed by Writes
x Different DIMMs 6 Auto
x Different Ranks 6 Auto
x On The Same Rank 1 Auto
>>>>> Channel C
Channel C Timing Settings [Press Enter]:
>>>>> Channel C Standard Timing Control
x CAS Latency Time 9 Auto
tRCD - Auto
tRP - Auto
tRAS - Auto
>>>>> Channel C Advanced Timing Control
x tRC - Auto
x tRRD - Auto
x tWTR - Auto
x tWR - Auto
x tWTP - Auto
x tWL - Auto
x tRFC - Auto
x tRTP - Auto
x tFAW - Auto
x Command Rate (CMD) - Auto
>>>>> Channel C Misc Timing Control
x B2B CAS Delay - Auto
x Round Trip Latency 70 Auto
>>>>> Channel C
Channel C Turnaround Settings [Press Enter]:
>>>>> Channel C Writes Followed by Reads
x Different DIMMs 6 Auto
x Different Ranks 6 Auto
x On The Same Rank 9 Auto
>>>>> Channel C Reads Followed by Writes
x Different DIMMs 9 Auto
x Different Ranks 9 Auto
x On The Same Rank 9 Auto
>>>>> Channel B Reads Followed by Reads
x Different DIMMs 6 Auto
x Different Ranks 5 Auto
x On The Same Rank 1 Auto
>>>>> Channel B Writes Followed by Writes
x Different DIMMs 6 Auto
x Different Ranks 6 Auto
x On The Same Rank 1 Auto
Load Line Calibration [Disabled]
CPU Vcore 1.13125v [1.25000v]
QPI/VTT Voltage 1.175v [1.235v]
IOH Core 1.100v [1.240V]
DRAM Voltage 1.500v [1.600V]
Advanced Voltage Control [Press Enter]:
Load Line Calibration [Disabled]
CPU Vcore 1.13125v [1.25000v]
x Dynamic Vcore
QPI/VTT Voltage 1.175v [1.235v]
CPU PLL 1.800v [Auto]
>>> MCH/ICH
PCIE 1.500v [Auto]
QPI PLL 1.100v [Auto]
IOH Core 1.100v [1.240V]
ICH I/O 1.500v [Auto]
ICH Core 1.100v [Auto]
>>> DRAM
DRAM Voltage 1.500v [1.600V]
DRAM Termination 0.750v [Auto]
Ch-A Data VRef. 0.750v [Auto]
Ch-B Data VRef. 0.750v [Auto]
Ch-C Data VRef. 0.750v [Auto]
Ch-A Address VRef. 0.750v [Auto]
Ch-B Address VRef. 0.750v [Auto]
Ch-C Address VRef. 0.750v [Auto]
Here are the settings from CPU-Z when computer was overclocked.
Last edited by JFC15; 28 May 2011 at 12:11. Reason: merged consecutive posts - let's not keep posting one after another