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Recognizing memory issues, Rampage III Extreme

Last response: in Overclocking
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a b à CPUs
a b K Overclocking
November 23, 2010 10:29:39 PM

I have been trying to run this issue down for ages and I am about to throw in the towel. I have a i7 920(D0) running at 4011MHz perfectly stable, temps max at 70C but I just can't get it to see all 6G ram 100% of the time on boot. It is an Asus Rampage III Extreme, bios 1005. I have tried cleaning the ram, reseating it, numerous voltage tweaks and different sets of ram. The ram is CORSAIR XMS3 6GB (3 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model TR3X6G1600C7 G. Power supply is an 1100 watt (this shouldn't matter).

Here is my bios settings currently:

Asus Rampage III Extreme, bios 1005
Configure System Performance Settings
______________________________________________________________
Target CPU Frequency: 4011MHz
Target DRAM Frequency: 1914MHz
LN2 Mode: Disabled
QPI Loadline Calibration: Disabled
Sync Mode Disabled
Ai Overclock Tuner Manual
OC From CPU Level UP Auto
CPU Ratio Status:( Min:12, Max:21)
CPU Ratio Setting 21
CPU Turbo Power Limit Disabled
CPU Configuration (see below)
BCLK Frequency 191
PCIE 100
DRAM Frequency DDR3-1914MHz
UCLK Frequency Auto
QPI Link Data Rate Auto

Memory Configuration Protect Disabled
DRAM Timing Control (all auto)

CPU Differential Amplitude Auto
CPU Clock Skew Auto
IOH Clock Skew Auto
----------------Extreme Engine Digi+ -------------------
Digi+ PWR Mode T-Balanced
PWM Volt. Control Auto
CPU Voltage OCP Enabled
CPU PWM Frequency Auto
---Please key in numbers or select voltage!-------------
Extreme OV Disabled
Extreme OC Auto
CPU temp. :
CPU Voltage 1.35
CPU PLL Voltage Auto
QPI/DRAM Core Voltage Auto
DRAM Bus Voltage 1.643
DRAM REF Voltages (all auto)
IOH temp. :
IOH Voltage Auto
IOH PCIE Voltage Auto
ICH temp. :
ICH Voltage Auto
ICH PCIE Voltage Auto

-------------------------------O.C. Profile-------------------------------------
ASUS O.C. Profile (Default)
--------------------------Spread Spectrum Control--------------------------
CPU Spread Spectrum Auto
PCIE Spread Spectrum Auto

CPU Configuration
CPU Ratio Setting 21
C1E Support Disabled
Hardware Prefetcher Enabled
Adjacent Cache Line Prefetch Enabled
MPS and ACPI MADT ordering Modern ordering
Intel(R) Virtualization Tech Enabled
CPU TM Function Disabled
Execute Disable Bit Enabled
Intel(R) HT Technology Enabled
*Active Processor Cores All
A20M Disabled
*Intel(R) SpeedStep(TM) Tech Disabled
Intel(R) C-STATE Tech Disabled
________________________________________________________

Any thoughts, ideas, tips, genius flashes? I know I am missing something but I just can't nail it down to come up showing full memory.
a c 138 à CPUs
a c 241 K Overclocking
November 23, 2010 11:27:48 PM

in bios memory hole ramping must disabled ,
sure use win7 64bit !
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a b à CPUs
a b K Overclocking
November 23, 2010 11:39:00 PM

I don't know what you are talking about with "in bios memory hole ramping". I am also using Windows 7 64 bit on this computer.
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a c 138 à CPUs
a c 241 K Overclocking
November 23, 2010 11:44:12 PM

Go... Bios in memory setting, look MEMORY HOLE RAMPING !

in Bios sellect Advance -
vanderpool technology must disabled
execute Disable bit must disabled
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a b à CPUs
a b K Overclocking
November 23, 2010 11:58:38 PM

I did and I don't see it in there, that is why I was saying that.
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a c 138 à CPUs
a c 241 K Overclocking
November 24, 2010 12:17:37 AM

in Bios sellect Advance -
vanderpool technology must disabled
execute Disable bit must disabled

sorry in other mobo vanderpool other name Memory hole ramping
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a b à CPUs
a b K Overclocking
November 24, 2010 12:32:10 AM

If you are talking Virtualization Technology why do you think this needs to be disabled?
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a c 138 à CPUs
a c 241 K Overclocking
November 24, 2010 12:36:18 AM

vanderpool technology disabled / execute Disable bit disabled unlock RAM more than 4Gb
vanderpool technology Enabled/ execute Disable bit must for 4Gb 64bit maybe 3.75Gb in 32bit of RAM
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a b à CPUs
a b K Overclocking
November 24, 2010 12:43:47 AM

I think there is a misunderstanding. I am able to get the system to come up with the full amount of ram if I reboot it after it reports under the max amount of ram.

I think you are thinking that it doesn't come up showing the full amount of ram at all.
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a c 138 à CPUs
a c 241 K Overclocking
November 24, 2010 12:55:29 AM

wow
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a b à CPUs
a b K Overclocking
November 24, 2010 4:34:33 PM

No one else has any ideas/thoughts?
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a b à CPUs
a b K Overclocking
December 1, 2010 12:10:56 AM

Ok, I guess I will post this question elsewhere.
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!