EP45-UD3R OCZ2RPR10664GK memory (finally) stable. Now 8400 OC'd to 3.6. Need Review.

[Hammer #641]

Lsdmeasap you have been a great help to me with your postings to people that have had problems with the EP45-UD3R Motherboard and the OCZ2RPR10664GK memory!

Here's my configuration:

E8400 3.0GHz
EP45-UD3R Motherboard
OCZ2RPR10664GK OCZ Reaper HPC 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 1066 (PC2 8500)
MSI N260GTX-T2D896 OC GeForce GTX 260 896MB
XP SP2
F11 Bios

Problem:
System would freeze at odd times, might run all day and stop in middle of night. Might freeze 5 minutes after booting. Might happen in middle of a game under heavy stress. Intelburntest, memtests, 3DMark all were fine. Ran memtests multiple times, different days, one stick, both sticks, didn't matter, tried different slots. Machine never had a problem booting - would just freeze. Sometimes 4 or 5 times a day. Sometimes worked fine all day. This was a new build in January, had these problems since though not as frequently to start. Thought it was my video card for too long. Thought it was a bad board. I wasn't trying to OC, all standard settings, latest bios and drivers on everything.

Turned out it was the memory timings weren't quite right.

After reading numerous posts about other people's problems with memory timings in this forum, I was able to try some of the recommendations and found a set that worked. (thanks Lsdmeasap!)

I'm posting a set below that shows my settings. Since then I have worked to OC to 3.6 based on Outer Marker's post of a similar system. I have those changes in red.

Hope this might help others that are having similar problems.

Let me know if anyone sees any adjustments that would be helpful.
Thx!


Robust Graphics Booster ...............: [Auto]
CPU Clock Ratio ..........................: [ 9]
Fine CPU Clock Ratio....................: +0.0
CPU Frequency ...........................: 3.00GHz <=== for OC settings chgd to 3.6

Clock Chip Control
Standard Clock Control
CPU Host Clock Control....................: [Disabled] <=== for OC settings chgd to Enabled
CPU Host Frequency (Mhz) ..............: 333 <=== for OC settings chgd to 401Mhz
PCI Express Frequency (Mhz) ...........: 100

C.I.A.2 ...............................: [Disabled]

Advanced Clock Control [Press Enter]
CPU Clock Drive...........................: 800mV
PCI Express Clock Drive.................: 900mV
CPU Clock Skew (ps)....................: 0ps
MCH Clock Skew (ps)....................: 0ps

DRAM Performance Control
Performance Enhance......................: [STANDARD]
Extreme Memory Profile (X.M.P.)........: [Disabled]
(G)MCH Frequency Latch.................: Auto
System Memory Multiplier ................: Auto <=== for OC settings chgd to 2.66D
Memory Frequency (Mhz) ................: 1066 <=== for OC settings chgd to 1069
DRAM Timing Selectable ...................: [Manual]

Standard Timing Control
CAS Latency Time.................: 5
tRCD ..................................: 5
tRP'....................................: 5
tRAS...................................: 15

Advanced Timing Control
tRRD...................................: Auto <=== for OC settings chgd to 4
tWTR...................................: Auto <=== for OC settings chgd to 4
tWR....................................: Auto <=== for OC settings chgd to 6
tRFC...................................: 54
tRTP...................................: Auto <=== for OC settings chgd to 4
Command Rate (CMD) ............: 2

Driving Strength Profiles
Driving Strength ......................: 1066 for both A and B channels

Channel A
Static tRead Value........................: [Auto]
tRD Phase0 Adjustment..................: [Auto]
tRD Phase1 Adjustment..................: [Auto]
tRD Phase2 Adjustment .................: [Auto]
tRD Phase3 Adjustment..................: [Auto]

Trd2rd(Different Rank)...................: [Auto]
Twr2wr(Different Rank)..................: [Auto]
Twr2rd(Different Rank)...................: [Auto]
Trd2wr(Same/Diff Rank).................: [Auto]

Dimm1 Clock Skew Control...............: [Auto]
Dimm2 Clock Skew Control...............: [Auto]
DDR Write Training.........................: [Auto]

Channel B
Static tRead Value........................: [Auto]
tRD Phase0 Adjustment..................: [Auto]
tRD Phase1 Adjustment..................: [Auto]
tRD Phase2 Adjustment .................: [Auto]
tRD Phase3 Adjustment..................: [Auto]

Trd2rd(Different Rank)..................: [Auto]
Twr2wr(Different Rank).................: [Auto]
Twr2rd(Different Rank)..................: [Auto]
Trd2wr(Same/Diff Rank).................: [Auto]

Dimm1 Clock Skew Control..............: [Auto]
Dimm2 Clock Skew Control..............: [Auto]
DDR Write Training........................: [Auto]

Motherboard Voltage Control
Voltage Type...........................: [Manual]

CPU---------------------Normal-----Stablized------Current(OC'd)

Load Line Calibration..................: [Disabled]
CPU Vcore.................1.25000V.....: 1.25000V ....... same
CPU Termination.........1.200V.........: [Auto] ......... 1.200V
CPU PLL....................1.500V.........: [Auto] ......... 1.500V
CPU Reference...........0.760V.........: [Auto] ......... same

MCH/ICH
MCH Core.....................1.100V.........: 1.300V ....... same
MCH Reference..............0.760V.........: [Auto] ....... same
MCH/DRAM Reference......0.900V.........: [Auto] ....... same
ICH I/O.........................1.500V.........: 1.500V ....... same
ICH Core.......................1.100V.........: 1.100V ....... same

DRAM
DRAM Voltage.............1.800V.........: 2.100V ....... same
DRAM Termination........0.900V.........: [Auto] ....... same
Channel A Reference.....0.900V.........: [Auto] ....... same
Channel B Reference.....0.900V.........: [Auto] ....... same

Here's a picture of the OC at 3.6 running IntelBurnTest.

[Lsdmeasap]

Re: EP45-UD3R OCZ2RPR10664GK memory (finally) stable. Now 8400 OC'd to 3.6. Need Revi

Glad you have found my posted help for others useful!

I would recommend you try working on these adjustments >>>

tRRD...................................: Auto <=== for OC settings chgd to 4 << 3 should be fine for sure
tWTR...................................: Auto <=== for OC settings chgd to 4 << 3 should be fine
tWR....................................: Auto <=== for OC settings chgd to 6 << 4-5 may work
tRFC...................................: 54 << 48-52 may be fine
tRTP...................................: Auto <=== for OC settings chgd to 4 << 3 should be fine
Command Rate (CMD) ............: 2 << Try 1 last, if it boots it works. Programs will still read two though due to the way Intel made some things.


Channel A & B
Static tRead Value........................: [Auto] <<< Set 8-9, 8 may not work with 2.66D/400 FSB

CPU Termination.........1.200V.........: [Auto] ......... 1.200V << May be fine, but to bring MCH Down I would raise this a little for starters. Maybe 1.225-1.25


MCH/ICH
MCH Core.....................1.100V.........: 1.300V ....... same <<< Try less, this much should not be needed, try 1.20-1.24, and if you have no luck you may need to adjust MCH Ref (See my Sig) to a lower/higher value