One more bit of info. When I was troubleshooting this problem a few months ago, I thought it might be a RAM problem, so I ran MemTest on each stick, changed some bus speeds, etc. Things seemed to stabilize afterwards, and indeed the machine resets less often now. Here is the output of "RamMon":
HTML Code:
RAMMon v1.0 Build: 1002 built with SysInfo v1.0 Build: 1006
PassMark (R) Software
www.passmark.com
Memmory summary for JESSE-PC-2011:
Number of Memory Devices: 4 Total Physical Memory: 16375 MB (16384 MB)
Total Available Physical Memory: 13631 MB
Memory Load: 16%
Item | Slot #1 | Slot #2 | Slot #3 | Slot #4 |
-------------------------------------------------------------------------------|-----------------------|-----------------------|-----------------------|-----------------------|-
Ram Type | DDR3 | DDR3 | DDR3 | DDR3 |
Standard Name | DDR3-1333 | DDR3-1333 | DDR3-1333 | DDR3-1333 |
Module Name | PC3-10600 | PC3-10600 | PC3-10600 | PC3-10600 |
Memory Capacity (MB) | 4096 | 4096 | 4096 | 4096 |
Bus Clockspeed (Mhz) | 666.67 | 666.67 | 666.67 | 666.67 |
Jedec Manufacture Name | | | | |
Search Amazon.com | Search! | Search! | Search! | Search! |
SPD Revision | 1.0 | 1.0 | 1.0 | 1.0 |
Registered | No | No | No | No |
ECC | No | No | No | No |
DIMM Slot # | 1 | 2 | 3 | 4 |
Manufactured | Year 2000 | Year 2000 | Year 2000 | Year 2000 |
Module Part # | | | | |
Module Revision | 0x0 | 0x0 | 0x0 | 0x0 |
Module Serial # | 0x0 | 0x0 | 0x0 | 0x0 |
Module Manufacturing Location | 0 | 0 | 0 | 0 |
# of Row Addressing Bits | 15 | 15 | 15 | 15 |
# of Column Addressing Bits | 10 | 10 | 10 | 10 |
# of Banks | 8 | 8 | 8 | 8 |
# of Ranks | 2 | 2 | 2 | 2 |
Device Width in Bits | 8 | 8 | 8 | 8 |
Bus Width in Bits | 64 | 64 | 64 | 64 |
Module Voltage | 1.5V | 1.5V | 1.5V | 1.5V |
CAS Latencies Supported | 5 6 7 8 9 | 5 6 7 8 9 | 5 6 7 8 9 | 5 6 7 8 9 |
Timings @ Max Frequency | 9-9-9-24 | 9-9-9-24 | 9-9-9-24 | 9-9-9-24 |
Minimum Clock Cycle Time, tCK (ns) | 1.500 | 1.500 | 1.500 | 1.500 |
Minimum CAS Latency Time, tAA (ns) | 13.125 | 13.125 | 13.125 | 13.125 |
Minimum RAS to CAS Delay, tRCD (ns) | 13.125 | 13.125 | 13.125 | 13.125 |
Minimum Row Precharge Time, tRP (ns) | 13.125 | 13.125 | 13.125 | 13.125 |
Minimum Active to Precharge Time, tRAS (ns) | 36.000 | 36.000 | 36.000 | 36.000 |
Minimum Row Active to Row Active Delay, tRRD (ns) | 6.000 | 6.000 | 6.000 | 6.000 |
Minimum Auto-Refresh to Active/Auto-Refresh Time, tRC (ns) | 49.125 | 49.125 | 49.125 | 49.125 |
Minimum Auto-Refresh to Active/Auto-Refresh Command Period, tRFC (ns) | 160.000 | 160.000 | 160.000 | 160.000 |
| | | | |
DDR3 Specific SPD Attributes | | | | |
Write Recovery Time, tWR (ns) | 15.000 | 15.000 | 15.000 | 15.000 |
Internal Write to Read Command Delay, tWTR (ns) | 7.500 | 7.500 | 7.500 | 7.500 |
Internal Read to Precharge Command Delay, tRTP (ns) | 7.500 | 7.500 | 7.500 | 7.500 |
Minimum Four Activate Window Delay, tFAW (ns) | 30.000 | 30.000 | 30.000 | 30.000 |
RZQ / 6 Supported | Yes | Yes | Yes | Yes |
RZQ / 7 Supported | Yes | Yes | Yes | Yes |
DLL-Off Mode Supported | Yes | Yes | Yes | Yes |
Maximum Operating Temperature (C) | 95 | 95 | 95 | 95 |
Refresh Rate at Extended Operating Temperature Range | 1X | 1X | 1X | 1X |
Auto-self Refresh Supported | Yes | Yes | Yes | Yes |
On-die Thermal Sensor Readout Supported | No | No | No | No |
Partial Array Self Refresh Supported | No | No | No | No |
Thermal Sensor Present | No | No | No | No |
Non-standard SDRAM Type | Standard Monolithic | Standard Monolithic | Standard Monolithic | Standard Monolithic |
Module Type | UDIMM | UDIMM | UDIMM | UDIMM |
Module Height (mm) | 30 | 30 | 30 | 30 |
Module Thickness (front), (mm) | 2 | 2 | 2 | 2 |
Module Thickness (back), (mm) | 2 | 2 | 2 | 2 |
Module Width (mm) | 133.5 | 133.5 | 133.5 | 133.5 |
Reference Raw Card Used | Raw Card B Rev. 0 | Raw Card B Rev. 0 | Raw Card B Rev. 0 | Raw Card B Rev. 0 |
DRAM Manufacture ID | 0 | 0 | 0 | 0 |
# of DRAM Rows | 0 | 0 | 0 | 0 |
# of Registers | 0 | 0 | 0 | 0 |
Register Manufacturer | | | | |
Register Type | | | | |
Register Revision | 0 | 0 | 0 | 0 | In talking to a friend, he recommended that the RAM should stay at 1066, as that's the last official "standard" RAM speed - any chance that will help?