This is yet another missing RAM post, I've tried many of the ideas on the forum without success. So I've decided for some specific guidance.
What I have done:
- Reseated RAM
- Installed RAM in different slot
- reseated processor 3x
- checked for bent pins
- checked for good contact on bottom of processor (little dimples on LGA pads)
- loosened heatsink
- replaced intel twist locks with tensioning springs and backplate for heat sink
- What seems like every BIOS combination of speed and voltages
- Several different BIOS versions
What I get is 4 GB on boot (BIOS shows 4 GB and Memtest will try to test 6 and fail). If I let it boot to windows, I will get 6GB(3.99GB usable) anything demanding will blue screen (mixture of codes)
Any one stick/two stick combination works fine (2 GB single or 4GB dual channel). Reseating RAM will have the typical limited success for a few days, sometimes.
The only thing that will detect 6GB is when two cold boots are performed close together. Even a cold boot after accidently clicking shutdown will detect 4GB, so it doesn't seem to be temperature related. When I get 6GB in BIOS, all is good until the next restart.
Mother Board ( EVGA X58 3X SLi E-758 )
Drivers ( 1025 )
Bios ( SZ2Z )
CPU ( 920 DO ) ( 3919B012 )
CPU Cooler ( Stock )
Memory ( Corsair XMS3 TR3X6G1600C7 1600 7 7 7 20 )
PSU ( Corsair HX850W )
GPU ( XFX 5770 )
Drivers ( 10.4 )
Operating System ( Windows 7 x64 Home Premium )
Frequency Control
CPU Clock Ratio ( 20X )
CPU Host Frequency (Mhz) ( 133 )
MCH Strap ( Auto )
CPU Uncore Frequency (Mhz) ( Auto )
CPU Clock Skew ( 0 ps )
Spread Spectrum ( Disabled )
PCIE Frequency (Mhz) ( 100 )
Memory Feature
Memory Speed ( XMP )
Memory Control Setting ( Enabled )
Memory Frequency ( 2:16 )
Channel Interleave Setting ( 6 Way )
Rank Interleave Setting ( 4 Way )
Memory Low Gap ( Auto )
tCL Setting ( 7 )
tRCD Setting ( 7 )
tRP Setting ( 7 )
tRAS Setting ( 20 )
tRFC Setting ( 88 )
Command Rate ( 1t )
Voltage Control
EVGA VDroop Control ( With VDroop )
CPU VCore ( Auto - 1.2875 )
CPU VTT Voltage ( +150 )
CPU PLL VCore ( Auto – 1.8 )
DIMM Voltage ( 1.65 )
DIMM DQ Vref ( +0mV )
QPI PLL VCore ( Auto – 1.100 )
IOH VCore ( Auto - 1.1 )
IOH/ICH I/O Voltage ( Auto – 1.5 )
ICH VCore ( 1.1 )
*PWM Frequency ( 800 KHZ )
CPU Feature
Intel SpeedStep ( Enabled )
Turbo Mode Function ( Enabled )
CxE Function ( Auto )
Execute Disable Bit ( Enabled )
Virtualization Technology ( Disabled )
Intel HT Technology ( Enabled )
Active Processor Cores ( All )
QPI Control Settings ( Enabled )
QPI Link Fast Mode ( Enabled )
QPI Frequency Selection ( 4.800 GT/s )
OC Recovery ( Disabled )
PnP/PCI PCI Express
Maximum Payload Size ( 2048 )
Power Management Setup
ACPI Suspend Type ( S1 )
HPET Support ( Enabled )
HPET Mode ( 64-bit )
post edited by hermannme - 2010/06/26 18:54:59