i7 920 Ram Timings

[randellfarrugia]

Hi, I have a set of 6gb (3x2gb) corsair xms 3 @ 1333mhz which are currently by default running at 1066 mhz. My CPU is Intel i7 920 currently at stock (2.66Ghz)

If I just arrange the timings from the bios will it cause any problems / damage ?
Are the timings related to the cpu clock ?

Thanks

 

[bobkn]

If you are running your I7-920 at its stock 2.66GHz, that means that the bus frequency is 133 MHz.

Your RAM is running at 8X that, 1066 Mhz.

You don't say what your motherboard is, but there may be a BIOS setting that allows you to set the RAM multiplier up to 10, to get 1333 MHz. I suggest that you set the RAM timings and voltage to their nominal values. If this is your RAM:

XMS3

it's 9-9-9-24 at 1.5V. (The page also tells that if you rely on the SPD seeings, you'll get 1066 MHz.)

 

[randellfarrugia]

yes that is my exact Ram
my motherboard is Asus P6T SE

in the bios setting I saw under DRAM Timings that for "locked CPU" only DDR3-800 and DDR3-1066 will work

I just need someone to confirm that changing the timings on the Ram will not damage my components.

Thanks

 

[sygnus21]

Hi, I have a set of 6gb (3x2gb) corsair xms 3 @ 1333mhz which are currently by default running at 1066 mhz. My CPU is Intel i7 920 currently at stock (2.66Ghz)

If I just arrange the timings from the bios will it cause any problems / damage ?
Are the timings related to the cpu clock ?

Thanks

If the RAM you bought is supposed to run at 1333MHz than you'll have to "manually" set those parameters in the BIOS. By default any RAM running above 1066 will be set to 1066.

Example: I have corsair's Dominator Memory which runs at 1600MHz @1.65volts. If I don't use the memory's XMP profile or just let the board use it's default settings it will run my memory at 1066MHz @1.5volts - regardless of the fact that the memory is designed to run at 1600MHz @1.65volts. Therefore I have to either manually set my memory to its "performance" settings or use the memory's supported XMP profile with my MB allows.

In short if you want your memory to run at its supported speed of 1333MHz you're have to manully set it in the BIOS. In you case you want to set the speed at 1333MHz and leave the voltage at 1.5 according to the specs listed here - XMS3

Hope this helps.

 

[randellfarrugia]

Hi, I have a set of 6gb (3x2gb) corsair xms 3 @ 1333mhz which are currently by default running at 1066 mhz. My CPU is Intel i7 920 currently at stock (2.66Ghz)

If I just arrange the timings from the bios will it cause any problems / damage ?
Are the timings related to the cpu clock ?

Thanks

If the RAM you bought is supposed to run at 1333MHz than you'll have to "manually" set those parameters in the BIOS. By default any RAM running above 1066 will be set to 1066.

Example: I have corsair's Dominator Memory which runs at 1600MHz @1.65volts. If I don't use the memory's XMP profile or just let the board use it's default settings it will run my memory at 1066MHz @1.5volts - regardless of the fact that the memory is designed to run at 1600MHz @1.65volts. Therefore I have to either manually set my memory to its "performance" settings or use the memory's supported XMP profile with my MB allows.

In short if you want your memory to run at its supported speed of 1333MHz you're have to manully set it in the BIOS. In you case you want to set the speed at 1333MHz and leave the voltage at 1.5 according to the specs listed here - XMS3

Hope this helps.

Thanks, I will change it as soon as I get home, quick question :

will the difference be noticeable ?

 

[sygnus21]

Thanks, I will change it as soon as I get home, quick question :

will the difference be noticeable ?

Generally yes, the faster your memory runs the better the performance - how much better is debatable. And really the only way to tell is to run benchmarks between the two.

However since you have faster memory, it should run at that speed

Good luck.

 

[randellfarrugia]

hi, i set my ram to 1333mhz @ 9-9-9-24
but now i noticed that if i overclock the base clock of the cpu, the ram frequency will be set higher.. and i don't want that
but if i choose the option below it it will be something like 1220 mhz

Is this sort of directly proportional ? If I overclock my Cpu i have to decrease from the ram frequency ?

 

[randellfarrugia]

or should i leave the ram @ 1066mhz and just overclock the cpu ? and it will automatically increase the ram frequency ?

 

[sygnus21]

To answer your question - yes when you overclock you clock other things too. That's why it's important to have a basic understanding of overclocking - which also leads to why you want to manually set certain settings/voltages.

Now....

Before I can give you any overclocking advice you're going to have to post your specific system specs in your system specs profile. See my system specs.

Also you need to be comfortable with messing around with voltage settings in the BIOS. And be aware that settings for one person may not work for someone else - even if they have the exact system.

WIth that said you also need to have a basic understanding of what overclocking involves as you've found out that doing one thing can influence another.

Overclocking done wrong can damage/destroy your system.

Let me know.

 

[randellfarrugia]

To answer your question - yes when you overclock you clock other things too. That's why it's important to have a basic understanding of overclocking - which also leads to why you want to manually set certain settings/voltages.

Now....

Before I can give you any overclocking advice you're going to have to post your specific system specs in your system specs profile. See my system specs.

Also you need to be comfortable with messing around with voltage settings in the BIOS. And be aware that settings for one person may not work for someone else - even if they have the exact system.

WIth that said you also need to have a basic understanding of what overclocking involves as you've found out that doing one thing can influence another.

Overclocking done wrong can damage/destroy your system.

Let me know.

Specs Updated

 

[sygnus21]

To answer your question - yes when you overclock you clock other things too. That's why it's important to have a basic understanding of overclocking - which also leads to why you want to manually set certain settings/voltages.

Now....

Before I can give you any overclocking advice you're going to have to post your specific system specs in your system specs profile. See my system specs.

Also you need to be comfortable with messing around with voltage settings in the BIOS. And be aware that settings for one person may not work for someone else - even if they have the exact system.

WIth that said you also need to have a basic understanding of what overclocking involves as you've found out that doing one thing can influence another.

Overclocking done wrong can damage/destroy your system.

Let me know.

Specs Updated

OK seeing that you have a 1366 chipset (core i7-900 series processor) yeah, upping the BCLK will definitely change the RAM settings so you'd definitely want to manually control them.

Not familiar with ASUS but on my Gigabyte board this is how I have my settings......



To get to 3.68gig (3.8 turbo) I set my BCLK to 160 (160*23)

I then manually set my System Memory Multiplier (SPD) to match my memory speed of 1600 since that's what my memory is designed to run at. In this case it's 10 - 10*160=1600

I also manually set the Uncore Clock Ratio to 20 (which is 2 times the memory speed) In this case 2*10=20 = 20*160= 3200MHz

I also also manually set my memory voltage to 1.640v (which is within specs specs)

With this - I control how my memory is clocked and insure it's running at it's max without going over it's designed speed, or voltage rating.

Now bear in mind that I have an i7-950 chip, and my memory is Corsair's Dominator sticks which run at 1600MHz on 1.65 volts. Your chip and memory milage will be different.

The above setting work for me and I take no responsibility for any damages done to your system trying them. Sorry.

Anyway this is why I say you need to research overclocking - check these guides....

- 3 Step Guide To Overclock Your Core i3, i5, or i7 – Updated! | Overclockers
- Core i7 Overclocking Guide For Beginners

And I say again, overclocking done wrong can and will destroy your system.

Good luck

 

[simmo]

Seeing as you have an X58 Asus board I'm assuming your bios is somewhat similar to mine so...when you overclock your CPU using the multi/BCLK the ram will change speed as it is linked...if you only want to set your ram only to its default speed then there "may" be an option below the BCLK that will allow you to change your ram speed only.
they are
Dram frequency..default is auto..change that to your ram speed then
UCLK frequency..default is auto...change that to double your ram speed then reboot..
Worst thing that can happen is it won't boot..if that happens just go back into your bios and reset to auto and post back here.