Memory Timings

[tjcinnamon]

I finally found a BIOS setup that is what I wanted.

Q6600 at 3.00GHz 1.3125v
Corsair PC8500 Dominator at 1:1



the CAS timings are at 4-4-4-15. Would it make a difference at all to have them at 4-4-4-12?

Or should I just leave them alone?

Thanks,
JOe K.

 

[tjcinnamon]

Also in having 1:1 ratio with a DRAM frequency of 333MHz I am in effect running my ram at 667MHz right? In order to get my RAM to run at its rated value of 1066MHz would I have to lower my multiplier to 6 and raise my bus speed to 500MHz? Or am I completely off base?

Thanks,
JOe K.

 

[n7]

I posted in your other thread in CPUs.

1:1 is not the ratio you want to be running, as that underclocks your RAM a lot.

Please take the time to read through some of the overclocking stickies there.
I suggested looking for 3.0 or 3.2 ratio to set the RAM to the appropriate speed.

 

[tjcinnamon]

The 3.2 worked!

How can I check my RAM voltage in windows? The gigabyte board only allows you to increase the DDR voltage by +.1V, +.2V, +.3V, ect... Therefore, I can't tell what my RAM voltage is at.

I checked CPU-Z but the readings seem off and I can't conclude what the voltage is:

In the SPD tab of CPU-Z
____________________
It says my max bandwidth is PC2-6400 (400MHz)

Then it says my Model of RAM is CM2X1024-8500-C5D (which is 1066MHz), I have 4 dimms which is correct.

Then at the bottom I am given 3 voltages

JEDEC#1 JEDEC#2 EPP#1 --- the first column is blank
277MHz 400MHz 533MHz
4 5 5
4 5 5
4 5 5
13 18 15
15 22 22
2T
1.8V 1.8V 2.2V

My stats from the memory tab are:

533MHz 5:8 5-5-5-18 2T

 

[n7]

I believe Gigabyte's software utility is called EZTune; that likely can if the board has software-readable voltage (not all do).

Everest will also: http://www.lavalys.com/
or HWMonitor: http://www.cpuid.com/hwmonitor.php

Gigabyte's vDIMM settings are based off 1.8v.

Therefore:
+0.1 = 1.9v
+0.2 = 2.0v
+0.3 = 2.1v

And so on.

You should run Memtest to make sure things are stable: http://www.memtest.org/
Prime95 Blend as well: http://majorgeeks.com/download.php?det=4363

CPU-Z's SPD tab reads information about the RAM; not the current settings.
Current speeds/timings are under the Memory tab.

More timing/subtimings can be read with MemSet: http://www.tweakers.fr/download/MemSet.exe

 

[tjcinnamon]

I tried Everest and HW monitor but couldn't find the RAM voltage. However, if it's based off of 1.8V then I know what the voltage is. I'll give MemSet a try.

Thanks,
JOe K.

 

[n7]

Likely your board doesn't support voltage for RAM readouts; mine doesn't...it really depends.

MemSet is for showing/setting more advanced timings...don't change anything in there unless you know what you are doing.

I primarily use MemSet for reading subtimings; bios for applying timings.

 

[tjcinnamon]

I'm running memtest. I got 2 errors the 2nd gauntlet of tests. It had one successful round of all the tests and then it errored the 2nd time through on test 5.

I had the voltage at +.4, I think I should lower that.

 

[tjcinnamon]

Originally posted by: n7

Gigabyte's vDIMM settings are based off 1.8v.

Therefore:
+0.1 = 1.9v
+0.2 = 2.0v
+0.3 = 2.1v
[/L]

I can confirm this is true. I checked the voltage changes with HWMonitor. Apparently when I first ran it, it wasn't recognizing my ram.