How to set the BIOS to work with 8GB @ 1066MHz?

[Gil80]

Hi there.
I have GA-EX38-DS4 MB and I use 8GB= 4 slots x 2GB sticks RAM of G.SKill
F2-8500CL5D-4GBPI-B
5-5-5-15
DDR2-1066 (PC2-8500)
2.0 ~ 2.1 Volts

I use Intel E8500 3.16Ghz @ 3.80Ghz.

I want to set the RAM to work at 1066MHz and keep CPU at 3.80GHz.

What are the recommended settings for timings and voltages?

Gigabyte GA-EX38-DS4 BIOS
CPU Clock Ratio : 9X
Fine CPU Clock Ratio : 0.5
CPU Frequency : 3.80GHz(400X9.5)
CPU Host Clock Control : Enabled
CPU Host Frequency : 400
PCI EXP. Frequency : 100
C.I.A.2 : Disabled
Performance Enhance : Standard
System Memory Multiplyer (SPD) : [2.66D]
Memory Frequency : [1066]
DRAM Timing Selectable (SPD) : Manual
CAS : 5
DRAM RAS to CAS : 5
DRAM RAS Precharge : 5
Precharge delay (tRAS) : 15
Advanced Timing Control
ACT to ACT Delay (tRRD) : 4
Rank Write to Read Delay : 4
Write to Precharge Delay : 6
Refresh to ACT Delay : 62
Read to Precharge Delay : 4
Static tRead Value : 7
Static tRead Phase Adjust : 0 [Auto]
Command Rate (CMD) : 2 [Auto]
Clock Driving & Skew Control
CPU/PCIEX Clock Driving Control : 800mV
CPU Clock Skew Control : Normal
(G)MCH Clock Skew Control : Normal
System Voltage Control : Normal
DDR2 OverVoltage Control : [+0.20V]
PCI-E OverVoltage Control : Normal
FSB OverVoltage Control :Normal
(G)MCH OverVoltage Control : Normal
Loadline Calibration : Auto
CPU Voltage Control : [1.32500v]
Normal CPU Vcore : [1.22500v]

[Lsdmeasap]

Re: How to set the BIOS to work with 8GB @ 1066MHz?

You may not be able to easily get 8GB working at 1066

Can you give us a link to your memory

CPU Clock Ratio : 9X
Fine CPU Clock Ratio : 0.5
CPU Frequency : 3.80GHz(400X9.5)
CPU Host Clock Control : Enabled
CPU Host Frequency : 400
PCI EXP. Frequency : 100
C.I.A.2 : Disabled
Performance Enhance : Standard
System Memory Multiplyer (SPD) : [2.66D]
Memory Frequency : [1066]
DRAM Timing Selectable (SPD) : Manual
CAS : 5
DRAM RAS to CAS : 5
DRAM RAS Precharge : 5
Precharge delay (tRAS) : 15-18

Advanced Timing Control
ACT to ACT Delay (tRRD) : 4
Rank Write to Read Delay : 4
Write to Precharge Delay : 6
Refresh to ACT Delay : 62-82
Read to Precharge Delay : 4
Static tRead Value : 7-9
Static tRead Phase Adjust : 0 [Auto]
Command Rate (CMD) : 2 [Auto] Set 2

Clock Driving & Skew Control
CPU/PCIEX Clock Driving Control : 800mV
CPU Clock Skew Control : Normal
(G)MCH Clock Skew Control : Normal
System Voltage Control : Normal
DDR2 OverVoltage Control : [+0.20V] with 8GB you might need +0.3 (+0.3 = 2.1V)
PCI-E OverVoltage Control : Normal
FSB OverVoltage Control :Normal +0.1 might help
(G)MCH OverVoltage Control : Normal This will need +0.2-0.35 for 4-8GB
Loadline Calibration : Auto
CPU Voltage Control : [1.32500v]
Normal CPU Vcore : [1.22500v]

[Gil80]

Re: How to set the BIOS to work with 8GB @ 1066MHz?

it's this heat case: G.skill pi black ddr2 800

but PC8500

[Lsdmeasap]

Re: How to set the BIOS to work with 8GB @ 1066MHz?

I need a link to it at G.Skill or the store you purchased from, but just to check the voltages which you can show with SPD Tab of CPU-z if you want.

Above settings should be good for you to use

[Gil80]

Re: How to set the BIOS to work with 8GB @ 1066MHz?

G.SKILL-Products

[Lsdmeasap]

Re: How to set the BIOS to work with 8GB @ 1066MHz?

Thanks, I'll edit the above

[Gil80]

Re: How to set the BIOS to work with 8GB @ 1066MHz?

Thanks, I'll edit the above

Just to verify, these are the settings?

CPU Clock Ratio : 9X
Fine CPU Clock Ratio : 0.5
CPU Frequency : 3.80GHz(400X9.5)
CPU Host Clock Control : Enabled
CPU Host Frequency : 400
PCI EXP. Frequency : 100
C.I.A.2 : Disabled
Performance Enhance : Standard
System Memory Multiplyer (SPD) : [2.66D]
Memory Frequency : [1066]
DRAM Timing Selectable (SPD) : Manual
CAS : 5
DRAM RAS to CAS : 5
DRAM RAS Precharge : 5
Precharge delay (tRAS) : 15-18

Advanced Timing Control
ACT to ACT Delay (tRRD) : 4
Rank Write to Read Delay : 4
Write to Precharge Delay : 6
Refresh to ACT Delay : 62-82
Read to Precharge Delay : 4
Static tRead Value : 7-9
Static tRead Phase Adjust : 0 [Auto]
Command Rate (CMD) : 2 [Auto] Set 2

Clock Driving & Skew Control
CPU/PCIEX Clock Driving Control : 800mV
CPU Clock Skew Control : Normal
(G)MCH Clock Skew Control : Normal
System Voltage Control : Normal
DDR2 OverVoltage Control : [+0.20V] with 8GB you might need +0.3 (+0.3 = 2.1V)
PCI-E OverVoltage Control : Normal
FSB OverVoltage Control :Normal +0.1 might help
(G)MCH OverVoltage Control : Normal This will need +0.2-0.35 for 4-8GB
Loadline Calibration : Auto
CPU Voltage Control : [1.32500v]
Normal CPU Vcore : [1.22500v]

[Lsdmeasap]

Re: How to set the BIOS to work with 8GB @ 1066MHz?

Yes that is correct, you may need to tinker a little bit to get going, or you may need to use a slower memory speed with 8GB

[Gil80]

Re: How to set the BIOS to work with 8GB @ 1066MHz?

I was able to get 1066Mhz without raising voltages except for DDR2 voltage and ran 10 tests with latest version of MEMtest+ 86 with no errors. Do you recommend on another software for memory testing?

[Lsdmeasap]

Re: How to set the BIOS to work with 8GB @ 1066MHz?

Sounds good so far!

Yes, I use HCI Design memtest, 3-4 instances at once with 600-800MB within windows, you can get it here
MemTest: RAM reliability tester for Windows

And of course you should also run Prime95 or LinX to test CPU and ram together

[Gil80]

Re: How to set the BIOS to work with 8GB @ 1066MHz?

Ok, I have Prim95. How many hours do you recommend?

[Lsdmeasap]

Re: How to set the BIOS to work with 8GB @ 1066MHz?

Well 4-6 is good, 8-12 is better, and 12-24 is great.

[Gil80]

Re: How to set the BIOS to work with 8GB @ 1066MHz?

Thanks, I'll do that!

[Lsdmeasap]

Re: How to set the BIOS to work with 8GB @ 1066MHz?

Good luck with the testing, here is a bit of info on Prime95 in case you run into errors

http://forums.tweaktown.com/gigabyte/31304-another-q9950-ud3p-overclock-9.html#post296644