Memory Timings Explained W/ Suggested Timings & Memset VS. BIOS

[Joesoft]

Re: Memory Timings Explained W/ Suggested Timings & Memset VS. BIOS

Hi again.
As I told you, I was waiting for completing a download in emule before test my pc with the values you suggested me to try to fix my problem.
My pc was working ok for two days. Yesterday at night, I viewed my emule and in few minutes it will finish.
Today, earlier, my pc was in another session. It rebooted
Then I reseted it, entered my session, run my messenger, emule, and... a blue screen!
Again I reseted my pc, entered my bios and increased the FSB OverVoltage Control in 0.1+ like you suggested me. All seems ok.
I didn't touch the DDR OverVoltageControl. It mantains the 0.1+ (1.9v)
Im still doing tests.
I will keep in touch.

Best regards

Joe

[Lsdmeasap]

Re: Memory Timings Explained W/ Suggested Timings & Memset VS. BIOS

OK, ya what you are calling ATC Delay is refresh to act delay, and for 4GB you need to set that to at least 52-62 for now until you get a bit more stable then you can try lower

[Joesoft]

Re: Memory Timings Explained W/ Suggested Timings & Memset VS. BIOS

Here is the second snapshot of my bios.
See you soon

[Joesoft]

Re: Memory Timings Explained W/ Suggested Timings & Memset VS. BIOS

Hi everyone and thanks to artdrivers and Lsdmeasap for the answers.
Here I attach two captures of my complete System Voltage Control of my bios

As you see, I have increased the DDR OverVoltage Control to +0.1 and set the ATC Relay to 64 (before it was 48 I think so)

artdrivers, you suggest me to increase the value of FSB OverVoltage Control. I am going to test it but Im still waiting for complete a download in emule.

Lsdmeasap, thanks to this forum I found the way to switch my bios menu to an advance menu. I was going crazy because the only way to see advance options was with the easyturner6.

Again thanks, and Im going to make changes in FSB OverVoltage as soon as emule completes the download

Best regards

[Lsdmeasap]

Re: Memory Timings Explained W/ Suggested Timings & Memset VS. BIOS

Hi,

The suggested timings for tWTR are (4-6) 9-11, and tRD (5/6) 7-10, while the values in parenthesis said to be for benchmarking only (I assume not everyday use.)

As default my motherboard sets tWTR 4/3 and tRD 4-6 depending on which of 2 pairs I have I use, and DRAM Prformece/X.M.S settings.

Does that make any sence?

In general the motherbord works well, but it didn't pass stress with default settings, so I am playing with tRD value now to see if this is the problem.

The values in parentheses are what you want to work down to, to get stable. Not just for benching but everyday use, depending on the setup of course

If you need help please make a thread with your full specs and settings and someone or myself can help you out a little.

I was wondering if its better to try and reduce your trfc vs tras?

Im using OCZ2P1066LV4GK, e7400, and ud3p, below are my settings stable on memtest and prime95:

9x430
2.66D
5-5-5-15-52 (everything else on auto)

LLC Enabled
1.35v
1.26v
1.57v
0.823v

1.2v
0.738v
0.94v
1.5v
Auto

1.9v

See PM

See below

Sorry Joesoft Since you do not have (G)MCH Voltage control (= Northbridge Voltage Control) you may always have issues with more than 2GB of ram because you cannot raise that.
You could try this.
DDR2 OverVoltage Control : Normal change to manual set to +0.2-+0.3
FSB OverVoltage Control : (= vtt) Normal change to manual set to Set +0.1-0.2 for stability
FSB DeOverVoltage Control : Normal
CPU GTLREFVolatge Ratio : 0.67
CPU Voltage : Normal

Let us know if that helps.

I agree with artdrivers, you may have a tough time with 3-4GB+ without being able to adjust the NB Voltage on that board.

Which setting are you increasing, that you called ATC Setting? Juist wanted to be sure, you should/may need to increase tRFC (Refresh To Act Delay). Just wondered if we are talking about the same setting here or not.

As said above you will of course need to also set your ram voltage to the spec amount you see on your ram's product page or the ram sticker itself. You can try lower later, but may not have much luck due to the lack of NB Voltage adjustments.

+0.3V = 2.1V
+0.2V = 2.0V

[artdrivers]

Re: Memory Timings Explained W/ Suggested Timings & Memset VS. BIOS

Sorry Joesoft Since you do not have (G)MCH Voltage control (= Northbridge Voltage Control) you may always have issues with more than 2GB of ram because you cannot raise that.
You could try this.
DDR2 OverVoltage Control : Normal change to manual set to +0.2-+0.3
FSB OverVoltage Control : (= vtt) Normal change to manual set to Set +0.1-0.2 for stability
FSB DeOverVoltage Control : Normal
CPU GTLREFVolatge Ratio : 0.67
CPU Voltage : Normal

Let us know if that helps.

[Joesoft]

[osme02]

Re: Memory Timings Explained W/ Suggested Timings & Memset VS. BIOS

I was wondering if its better to try and reduce your trfc vs tras?

Im using OCZ2P1066LV4GK, e7400, and ud3p, below are my settings stable on memtest and prime95:

9x430
2.66D
5-5-5-15-52 (everything else on auto)

LLC Enabled
1.35v
1.26v
1.57v
0.823v

1.2v
0.738v
0.94v
1.5v
Auto

1.9v

[artdrivers]

Re: Memory Timings Explained W/ Suggested Timings & Memset VS. BIOS

This is a great post. Thanks Lsdmeasap

[Chike]

Re: Memory Timings Explained W/ Suggested Timings & Memset VS. BIOS

Hi,

The suggested timings for tWTR are (4-6) 9-11, and tRD (5/6) 7-10, while the values in parenthesis said to be for benchmarking only (I assume not everyday use.)

As default my motherboard sets tWTR 4/3 and tRD 4-6 depending on which of 2 pairs I have I use, and DRAM Prformece/X.M.S settings.

Does that make any sence?

In general the motherbord works well, but it didn't pass stress with default settings, so I am playing with tRD value now to see if this is the problem.

[Lsdmeasap]

Re: Memory Timings Explained W/ Suggested Timings & Memset VS. BIOS

Great work on this guide Lsdmeasap!

It brought me back to TT for the first time in ages.

Attemping to get my EP45-UD3P beyond Q9550 @ 4.4Ghz

May require some DDR2 PC2-10400 1300MHz, my Mushkin 996580 doesn't seem capable.

Hmm, ya you may need faster ram or are you not using the lower multi's? I have ran my 996580's up to 1200Mhz, are you using 555 timings? May have to try 555-20 or 655-18/20 for 1300? Maybe 666 timings?

Is it possible the other way around though? I played with timings a little with my current FSB of 500 and Memtest passes, but custom test in Prime95 (a bit more hardcore Blend I guess) fails. Is it possible that raising the timings values might help to get stable instead of increasing MCH core voltage? (in fact I lowered that before as well)

Either could help really, just depends I suppose. More MCH, More Ram voltage, cooler ram, or looser main/sub timings would help you get more anytime.

[Octopuss]

Re: Memory Timings Explained W/ Suggested Timings & Memset VS. BIOS

Memtest86+ is a fine indicator of Memory stability only, if you are failing Prime but passing memtest then you likely have other issues such as voltages (CPU or QPI/Vtt or NB) too low or something along those lines

Is it possible the other way around though? I played with timings a little with my current FSB of 500 and Memtest passes, but custom test in Prime95 (a bit more hardcore Blend I guess) fails. Is it possible that raising the timings values might help to get stable instead of increasing MCH core voltage? (in fact I lowered that before as well)

[dryadsoul]

Re: Memory Timings Explained W/ Suggested Timings & Memset VS. BIOS

Great work on this guide Lsdmeasap!

It brought me back to TT for the first time in ages.

Attemping to get my EP45-UD3P beyond Q9550 @ 4.4Ghz

May require some DDR2 PC2-10400 1300MHz, my Mushkin 996580 doesn't seem capable.

[Lsdmeasap]

Re: Memory Timings Explained W/ Suggested Timings & Memset VS. BIOS

Well there is many changes from DDR2 to the DDR3 architecture, so most of this will not apply when it comes to DDR3. The names of some of the settings are the same of course but timings and such mentioned here do not apply really.

[willykatie]

Re: Memory Timings Explained W/ Suggested Timings & Memset VS. BIOS

Great explain about timings. Thanks :)

Just wondering, will it be the same for DDR3?