Ram concern

sreeve1993 · 15 Jan 2012 at 18:17

Hey guys,

I just need a little bit of help about my RAM. Anyway in my bios it said my Ram FSB wa set to DDR3 - 1333 when my motherboard supports 1600 and mty ram is 1600. I changed the speed to 1600 and just wondering if this would be okay or do I need to change something else?

The motherboard I have is Asrock Z68 Extreme 4 Generation 3

Thank you

Stefan

edscdk · 15 Jan 2012 at 18:23

does it work ok?

if yes = ok

if no = you need to change something

sreeve1993 · 15 Jan 2012 at 18:29

yeah, nothing has happened or anything, runs smooth, temps are still good

Surveyor · 15 Jan 2012 at 18:52

If it's running OK then I assume the BIOS has selected appropriate timings but you do need to check what voltage is being used.

With Sandy Bridge the DRAM voltage should ideally be around 1.5V (unless you have ultra low voltage RAM) and no more than 1.575V.

sreeve1993 · 15 Jan 2012 at 19:32

How do you check the voltage? Ive just tried looking into my bios but i cant see anything, but it says the voltage for my RAM is 1.65v

Surveyor · 15 Jan 2012 at 20:28

sreeve1993 said:
How do you check the voltage? Ive just tried looking into my bios but i cant see anything, but it says the voltage for my RAM is 1.65v

That's the one, it's too high at 1.65V.

You need to change it from auto (where I assume it is now) to manual and then set it to around 1.5V.

If you get errors then you can increase the voltage a little at a time but 1.575V is really the maximum you should be using.

sreeve1993 · 15 Jan 2012 at 21:01

Problem is, i cant modify that voltage, it says just says it, hard to explain what I mean. Where exactly do you check the voltage?

Surveyor · 15 Jan 2012 at 21:21

sreeve1993 said:
Problem is, i cant modify that voltage, it says just says it, hard to explain what I mean. Where exactly do you check the voltage?

OC Tweaker in the BIOS and then scroll down to DRAM voltage.

Change DRAM voltage from Auto to Manual and then set it at 1.5V:

horrorwood · 15 Jan 2012 at 21:52

1.65v ram is fine for sandybridge...

(I'll await the flames..)

Surveyor · 15 Jan 2012 at 22:22

horrorwood said:
1.65v ram is fine for sandybridge...

1.65V isn't fine for Sandy Bridge.

It's beyond the Intel specification and I've seen it where there have been blue screens and errors with 1.65V which have been cured by dropping down to 1.5V.

You might get away with 1.65V but why risk it when the majority of DDR3 RAM sold today will work perfectly fine at ~1.5V.

sreeve1993 · 15 Jan 2012 at 22:25

Thank you

. I will sort this out now

sreeve1993 · 15 Jan 2012 at 22:31

I've done it, ive set it to 1.500 voltage, should this by fine? Or go lower?

Surveyor · 15 Jan 2012 at 22:35

sreeve1993 said:
I've done it, ive set it to 1.500 voltage, should this by fine? Or go lower?

1.5V is fine.

You can try for lower if you like but if it's stable at that I'd leave it alone.

horrorwood · 15 Jan 2012 at 22:39

Surveyor said:
1.65V isn't fine for Sandy Bridge.

It's beyond the Intel specification and I've seen it where there have been blue screens and errors with 1.65V which have been cured by dropping down to 1.5V.

You might get away with 1.65V but why risk it when the majority of DDR3 RAM sold today will work perfectly fine at ~1.5V.

http://downloadmirror.intel.com/19482/eng/DP67BG_ProductGuide01_English.pdf

Page 15 says it is ok. The OP may have 1.65v ram? AFAIK he hasnt even said which ram he has :confused:

ishoeyi · 15 Jan 2012 at 22:41

i got a set of corsair ram
although its rated at 1.65v, but i ran memtest on it using 1.5v, seem to work perfectly fine

sreeve1993 · 15 Jan 2012 at 22:43

I have the Corsair XMS3 14GB (4x4GB) DDR3 PC3-12800C9 1600MHz Dual Channel Kit.
I'll leave it at that setting as my PC is running fine

Thank you for all your help

Stefan

wazza300 · 15 Jan 2012 at 22:47

sorry but 1.65v is fine from what ive read,any higher is a no no though,best use one click down from 1.65v as mb overvolts slightly by setting 1.65250v

Surveyor · 15 Jan 2012 at 22:52

horrorwood said:
http://downloadmirror.intel.com/19482/eng/DP67BG_ProductGuide01_English.pdf

Page 15 says it is ok. The OP may have 1.65v ram? AFAIK he hasnt even said which ram he has

That's very nice but everywhere you look the recommendation is 1.5V +/- 5%.

People have actually discussed this with Intel and that's what's come out of the discussions.

~~~~~IMPORTANT SANDYBRIDGE OC INFO: Voltages & OC Guide!!~~~~~

Sandy Bridge max voltage *warning*

I believe the OP has 16GB Corsair XMS3 (4x4GB) DDR3 PC3-12800C9 1600MHz.

That'll run fine at ~1.5V, I know as I have the same RAM

There may be no 'problem' for some people using 1.65V but there is for others so why do it if you don't have to?

Now go away

Edit:

I was right about the RAM

Apart from his typo.

ishoeyi · 15 Jan 2012 at 22:54

sreeve1993 said:
I have the Corsair XMS3 14GB (4x4GB) DDR3 PC3-12800C9 1600MHz Dual Channel Kit.
I'll leave it at that setting as my PC is running fine

Thank you for all your help

Stefan

go back to school your maths is way off

wazza300 · 15 Jan 2012 at 22:58

Surveyor said:
That's very nice but everywhere you look the recommendation is 1.5V +/- 5%.

People have actually discussed this with Intel and that's what's come out of the discussions.

~~~~~IMPORTANT SANDYBRIDGE OC INFO: Voltages & OC Guide!!~~~~~

Sandy Bridge max voltage *warning*

I believe the OP has 16GB Corsair XMS3 (4x4GB) DDR3 PC3-12800C9 1600MHz.

That'll run fine at ~1.5V, I know as I have the same RAM

There may be no 'problem' for some people using 1.65V but there is for others so why do it if you don't have to?

Now go away

Edit:

I was right about the RAM

Apart from his typo.

yes thats right for 1.5v designed ram,then run it at 1.5v but if your using ram from x58 like me designed to run at 1.65v then it will be fine to run it at that voltage