Where Is The Problem? EP45-UD3R + F2-8500CL5D-4GBPK

[genetix]

Still sounds like North Bridge issue to me. Since if both sticks are fine on memtest as single. It simply cannot be in memory. It just is in the board andonly thing which could fail on board is MCH / North bridge. This is P45 board same would apply as on ASUS side, but I simply cannot suggest of rasing board voltages knowing on a lot of threads on web which indicates that this board doesn't work similar than ASUS on voltages.

Maximum Intel rated vMCH is 1.21v. (Although, some board automates this even to 1.25v), but I know by simply looking people OC this board it should never be bumped up over limits I said above.

Dumping the memory voltage up could help (it should hold it's goods all the way up to 2.4-2.5v but these voltages are absolute extreme even in most hardcore OCs I make no more than 2.2v it ever needed on G.Skill memory), but won't suggest that either as it would not be at specs.

--

What you could do is double check what Program 'Lavalys Everest' says on sensor pages about voltages when you set usual values on BIOS. BIOS voltages are near never actual voltages and there's droop etc etc.. So, might be good idea to check what the actual voltages are.

[4x64]

These voltages work safely with that board:
MCH core to 1.40 limit is 1.60
ICH core to 1.20 limit is 1.60
DRAM to 2.10 <-- your sticks do not need more than this

Can you post your bios settings?? Also are you using any RAID configuration??

Processor Name:
Memory Model Number:

Robust Graphics Booster.........................[ ]
CPU Clock Ratio.................................[ ]
Fine CPU Clock Ratio............................[ ]
CPU Frequency [ ]GHz..........................[ ]

******Clock Chip Control******

CPU Host Clock Control..........................[ ]
CPU Host Frequency (Mhz)........................[ ]
PCI Express Frequency (Mhz).....................[ ]
C.I.A 2 [ ]

******Advanced Clock Control******

CPU Clock Drive.................................[ ]
PCI Express Clock Drive.........................[ ]
CPU Clock Skew..................................[ ]
MCH Clock Skew..................................[ ]

******DRAM Performance Control******

Performance Enhance [ ]
Extreme Memory Profile (XMP)....................[ ]
(G) MCH Frequency Latch.........................[ ]
System Memory Multipler.........................[ ]
Memory Frequency 1066...........................[ ]
DRAM Timing Selectable..........................[ ]

CAS Latency Time................................[ ]
tRCD............................................[ ]
tRP.............................................[ ]
tRAS............................................[ ]

******Advanced Timing Control******

tRRD............................................[ ]
tWTR............................................[ ]
tWR.............................................[ ]
tRFC............................................[ ]
tRTP............................................[ ]
Command Rate (cmd)..............................[ ]

******Channel A Timing Settings******

Static tRead Value [ ] ................[ ]
tRD Phase0 Adjustment [ ] ................[ ]
tRD Phase1 Adjustment [ ] ................[ ]
tRD Phase2 Adjustment [ ] ................[ ]
tRD Phase3 Adjustment [ ] ................[ ]

tRD 2rd (Different Rank) [ ] ................[ ]
tWR 2wr (Different Rank) [ ] ................[ ]
tWR 2rd (Different Rank) [ ] ................[ ]
tRD 2wr (Same/Difft Rank) [ ] ................[ ]

Dimm 1 Clock Skew Control.......................[ ]
Dimm 2 Clock Skew Control.......................[ ]
DDR Write Training..............................[ ]

******Channel A Driving Settings******

Drive Strength Profile..........................[ ]
Data Driving Pull Up Level......................[ ]
cmd Driving Pull Up Level.......................[ ]
ctrl Driving Pull Up Level......................[ ]
clk Driving Pull Up Level.......................[ ]

Data Driving Pull Down Level....................[ ]
cmd Driving Pull Down Level.....................[ ]
ctrl Driving Pull Down Level....................[ ]
clk Driving Pull Down Level.....................[ ]

******Channel B Timing Settings******

Static tRead Value [ ] ................[ ]
tRD Phase0 Adjustment [ ] ................[ ]
tRD Phase1 Adjustment [ ] ................[ ]
tRD Phase2 Adjustment [ ] ................[ ]
tRD Phase3 Adjustment [ ] ................[ ]

tRD 2rd (Differnt Rank) [ ] ................[ ]
tWR 2wr (Differnt Rank) [ ] ................[ ]
tWR 2rd (Differnt Rank) [ ] ................[ ]
tRD 2wr (Same/Difft Rank) [9 ] ................[ ]

Dimm 1 Clock Skew Control.......................[ ]
Dimm 2 Clock Skew Control.......................[ ]
DDR Write Training..............................[ ]

******Channel B Driving Settings******

Drive Strength Profile..........................[ ]
Data Driving Pull Up Level......................[ ]
cmd Driving Pull Up Level.......................[ ]
ctrl Driving Pull Up Level......................[ ]
clk Driving Pull Up Level.......................[ ]

Data Driving Pull Down Level....................[ ]
cmd Driving Pull Down Level.....................[ ]
ctrl Driving Pull Down Level....................[ ]
clk Driving Pull Down Level.....................[ ]

******Motherboard Voltage Control******

Load-Line Calibration [ ]
CPU Vcore [ ]...................[ ]
CPU Termination [ ]...................[ ]
CPU PLL [ ]...................[ ]
CPU Reference [ ]...................[ ]

MCH Core [ ] ]...................[ ]
MCH Reference [ ]...................[ ]
MCH/DRAM Refernce [ ]...................[ ]
ICH I/O [ ]...................[ ]
ICH Core [ ]...................[ ]

DRAM Voltage [ ]...................[ ]
DRAM Termination [ ]...................[ ]
Channel A Ref [ ]...................[ ]
Channel B Ref [ ]...................[ ]

******Advanced BIOS Features******

CPU Multithreading..............................[ ]
Limit CPUID Max to 3............................[ ]
No-Execute memory Protect.......................[ ]
CPU Enhance Halt (CIE)..........................[ ]
C2/C2E State Support............................[ ]
C4/C4E State Support............................[ ]
CPU Thermal Monitor.............................[ ]
CPU EIST Function...............................[ ]
Virtualization Technology.......................[ ]

[spiffae]

What you could do is double check what Program 'Lavalys Everest' says on sensor pages about voltages when you set usual values on BIOS. BIOS voltages are near never actual voltages and there's droop etc etc.. So, might be good idea to check what the actual voltages are.

WELL - some interesting developments.

Since I upgraded the BIOS, I had only tried both sticks at default, and then forum-recommended settings. On a whim I just put in both sticks of G.Skill and downclocked it to 2.40B - DDR800. So far I've been running windows without any blue screens for about half an hour, which is a good deal longer then I ever made it with the memory at 1066.

To test, I popped in my memtest boot CD, and lo and behold the machine rebooted during the first test like it always does. Not to be denied I rebooted and opted for the "Experimental" version of memtest, that uses multiple CPUs. Miraculously, that one worked! I didn't let it run all the way through, but generally if it makes it through that first test, it goes all the way through. When I've got a minute I'll run it to be sure.

Maybe the new BIOS has upped compatibility for DDR800, and I'm just destined to not have DDR1066 ram? At this point with all this worry, I'm inclined to just leave well enough alone. I've got 4 gigs of ram in there now, which is to say twice as much as I've been stable with for the last two weeks.

Genetix, here is a screengrab of EVEREST - I am running a test of all my free memory in the background so that is working everything pretty hard. Seems ok to me.

http://img84.imageshack.us/img84/1545/capture2r.jpg

One last question: During Memtest86+, it says "Settings: RAM : 423 MHz (DDR847)" - have I misconfigured it? The BIOS says DDR800.

[GSKILL TECH]

What is your CPU Host Frequency? What is your System Memory Multiplier? For some reason it is operating at 847.. May be the wrong divider or increase CPU Host Freq.

Thank you
GSKILL SUPPORT

[spiffae]

CPU Host: 333 [Auto]
System Memory Multiplier 2.40B [Manually Set]

It says DDR 800 in the BIOS. EVEREST also says DDR 800. Could it just be a misreading in Memtest?

Here is a report from EVEREST: (DIMM 3 is the same)

DIMM1: G Skill F2-8500CL5-2GBPK

Memory Module Properties:
Module Name G Skill F2-8500CL5-2GBPK
Serial Number None
Module Size 2 GB (2 ranks, 8 banks)
Module Type Unbuffered DIMM
Memory Type DDR2 SDRAM
Memory Speed DDR2-800 (400 MHz)
Module Width 64 bit
Module Voltage SSTL 1.8
Error Detection Method None
Refresh Rate Reduced (7.8 us), Self-Refresh

Memory Timings:
@ 400 MHz 5-5-5-15 (CL-RCD-RP-RAS) / 24-51-3-6-3-3 (RC-RFC-RRD-WR-WTR-RTP)

[GSKILL TECH]

Run the Memory and Cache test in Everest and in the details it should tell you the exact current speed. Let us know the read/write/copy speeds as well.

This board should be able to run 1066, what issues do you get?

Let me know.

Thank you
GSKILL SUPPORT

[spiffae]

Memory Read: 6806 MB/s
Memory Write: 7026 MB/s
Memory Copy: 6798 MB/s

It says: Dual DDR2-800 5-5-5-15 CR2

As fr what problems I have... read the last two pages! It was a total nighmare, and I don't know how to solve it. At this point unless someone has a new suggestion, I'm stumped.

[GSKILL TECH]

What happens now when you try the exact settings in the guide for 1066 in slots 2 and 4? So many things are going on it's hard to keep track of the progress and what you have tested with what configurations and BIOS.

Your speeds are looking good though. If you change timings to 4-4-4-12 for now you should get near 1066 CL5 speeds or better..

Let me know what happens now with the BIOS guide settings.

Thank you
GSKILL SUPPORT

[spiffae]

Basically when I set the settings to EXACTLY the settings in the BIOS guide post, the machine boots up but BSODs constantly. If I run a windows memory test, it throws errors (linked earlier) and then BSODs. With one stick of gskill at 1066, there are no errors. With two sticks of 3-year-old Corsair XMS (DDR800 2x1GB) there are no errors.

Honestly, at this point I'm so sick of seeing that blue screen that I'm just about ready to throw in the towel.

EDIT: Errors here: http://gskill.us/forum/showpost.php?p=7260&postcount=9