OCing Q6600 and 8Gigs of ram on EP45-UD3P

[ochoco]

To start off I want to thank Lsdmeasap for his efforts. I'm currently running at 3.4 after using settings he posted in another thread with only a few changes, gave me a great starting point. I'm not 100% stable yet but getting there. One of my cores errored out running Prime95 after 45 minutes, the other three ran until I had to stop it, about 5.5 hours.

I was specifically curious about running 8 gigs of memory and the tRFC value. I do not pretend to understand very much of these settings, though I am trying, but it was posted that this should be higher when you run more ram, I'm just not sure how hi for 4 x 2GB.

My current settings:

MB Intelligent Tweaker(M.I.T.)
Robust Graphics Booster ...............: Auto
CPU Clock Ratio ..........................: 8x
Fine CPU Clock Ratio.....................:.0
CPU Frequency ...........................: 3.40GHz( 426x8)


Clock Chip Control 
Standard Clock Control
CPU Host Clock Control..................: [Enabled] 
CPU Host Frequency (Mhz) ............: 426Mhz
PCI Express Frequency (Mhz) .........:Set to 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 ..............: 2.40B
Memory Frequency (Mhz) ..............: 1066  1022
DRAM Timing Selectable ................: [Manual]

Standard Timing Control
CAS Latency Time........................5
tRCD .........................................5
tRP'...........................................5
tRAS..........................................18

Advanced Timing Control
tRRD...........................................4
tWTR..........................................5
tWR............................................6
tRFC...........................................68
tRTP...........................................5
Command Rate (CMD) ....................:2

Driving Strength Profiles
Driving Strength ............................1066

Channel A
Static tRead Value.........................:12
 tRD Phase0 Adjustment...................:(1) Auto
tRD Phase1 Adjustment...................:(0) Auto
 tRD Phase2 Adjustment .................:(0) Auto
 tRD Phase3 Adjustment..................:(0) Auto
Trd2rd(Different Rank)....................:(8) Auto 
Twr2wr(Different Rank)...................:(8) Auto 
Twr2rd(Different Rank)...................:(7) Auto 
Trd2wr(Same/Diff Rank)..................:(9) Auto 
Dimm1 Clock Skew Control...............:Auto  ps
Dimm2 Clock Skew Control...............:Auto  ps
DDR Write Training.....................:Auto

Channel B
Static tRead Value.........................:12
 tRD Phase0 Adjustment...................:(1) Auto
tRD Phase1 Adjustment...................:(0) Auto
 tRD Phase2 Adjustment .................:(0) Auto
 tRD Phase3 Adjustment..................:(0) Auto
Trd2rd(Different Rank)....................:(8) Auto 
Twr2wr(Different Rank)...................:(8) Auto 
Twr2rd(Different Rank)...................:(7) Auto 
Trd2wr(Same/Diff Rank)..................:(9) Auto 
Dimm1 Clock Skew Control...............:Auto  ps
Dimm2 Clock Skew Control...............:Auto  ps
DDR Write Training.....................:Auto

Motherboard Voltage Control
Voltage Type.���... Manual
CPU
CPU Vcore�.���.........................:1.425
CPU Termination�..... 1.200V*.......: 1.340
CPU PLL�������....1.500V*.......: 1.610

CPU Referen.����....0.755V*.......: (.760) Auto

CPU Reference2���,,0.800V*.......: N/A

MCH/ICH
MCH Core�����.....1.100V...........: 1.280
MCH Reference�.��.0.800V...........; (.760) Auto
MCH/DRAM Ref.�......0.900V...........: (.900) Auto
ICH I/O������.....1.550V............: 1.610
ICH Core����...��1.100V............: 1.200

DRAM
DRAM Voltage ��....1.800V............: 2.100
DRAM Termination .�0.900V............: (.900) Auto
Channel A Reference 0.900V............:(.900) Auto
Channel B Reference 0.900V............:(.900) Auto

Advanced Settings
Limit CPUID Max. to 3.....................: [Disabled]
No-Execute Memory Protect............: [Enabled]
CPU Enhanced Halt (C1E)................: [Disabled]
C2/C2E State Support....................: N/A
x C4/C4E State Support..................: N/A
CPU Thermal Monitor 2(TM2) ...........: [Enabled]
CPU EIST Function.........................: [Disabled]
Virtualization Technology................: [Disabled] Enabled if you use Vmware/Virtual PC

Integrated Peripherals
Legacy USB Storage Detect ..............[Disabled] *Note* Must be enabled to flash from USB

The highest my temps got was 61c during a 5.5 hour run. That seems acceptable. I don't have any kind of clock goal I just want to keep pushing it as high as I can on air and still be stable and cool enough not to break things. It is a lot of fun even if I don't understand it all...yet.

[Chucko]

Re: OCing Q6600 and 8Gigs of ram on EP45-UD3P

My (limited) understanding is that tRFC needs to be > 127.5 ns for 1Gbit RAM, >195 ns for 2Gbit devices. Most 2GB DIMMs are built with 1Gbit devices. 68 seems about right for your settings.

I'm running 4x2GB (OCZ Reaper HPC 1066) and I'm finding I need to back off the CAS latency to get things stable. I'm a long way from 1066MHz, but I hope to get there eventually.