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post #5231 of 9641
Quote:
Originally Posted by KoS View Post
I was wonderin if anyone can help me tweek my memory timing I have OCZ AMD Black Edition 4GB (2 x 2GB), Im new to MSI I used to use Asus but they let me down and tryin to get similar wit MSI's OC system. When I boot up for sum reason my memory is not set to 1600 and dont know where to go to change it.
Welcome to the forum KoS,you need to go into the bios,"cell menu","advanced dram configeration",set your ram timings manualy,as stated on the sticks,press esc to go back to the previous screen,then go to "fsb/dram ratio",change the divider to 1:4,this will give you 1600 on your ram,hope this helps.
Edited by moorhen2 - 2/28/10 at 10:58am
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post #5232 of 9641
Currently, I am running:

CPU: 3700mhz with 18.5x multiplier @ 1.384v
RAM: 1600mhz (1.4x in BIOS, with 9-9-9-24-30 1T @1.55v

No other OC settings in BIOS adjusted at the moment and I am idling around 37* and after an hour on COD MW2, 47*. The system is very stable running Prime95 and IntelBurn with no issues and a max temp of ~57*

I have attempted to adjust the NB-CPU and HT Link and their associated voltages with limited success (2400mhz max reached). After reading Tony's (OCZ Moderater) recommendations, it is highly recommended to bump up the speed of the CPU-NB when overclocking RAM to fully realize the RAM's potential, but my question is this...

1. If one raises the CPU-NB speed, do you have to raise the CPU-NB voltage AND the NB voltage?
2. Is there a ratio of voltage by which to step up (i.e. for every 100mhz in CPU-NB, raise the CPU-NB voltage .2v and the NB voltage .1 for example)
3. Can you raise the CPU-NB speed without touching the HT Link speed and voltage?

I think the voltage range for these settings is really throwing me off.
    
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post #5233 of 9641
Quote:
Originally Posted by algreen View Post
Currently, I am running:

CPU: 3700mhz with 18.5x multiplier @ 1.384v
RAM: 1600mhz (1.4x in BIOS, with 9-9-9-24-30 1T @1.55v

No other OC settings in BIOS adjusted at the moment and I am idling around 37* and after an hour on COD MW2, 47*. The system is very stable running Prime95 and IntelBurn with no issues and a max temp of ~57*

I have attempted to adjust the NB-CPU and HT Link and their associated voltages with limited success (2400mhz max reached). After reading Tony's (OCZ Moderater) recommendations, it is highly recommended to bump up the speed of the CPU-NB when overclocking RAM to fully realize the RAM's potential, but my question is this...

1. If one raises the CPU-NB speed, do you have to raise the CPU-NB voltage AND the NB voltage?
2. Is there a ratio of voltage by which to step up (i.e. for every 100mhz in CPU-NB, raise the CPU-NB voltage .2v and the NB voltage .1 for example)
3. Can you raise the CPU-NB speed without touching the HT Link speed and voltage?

I think the voltage range for these settings is really throwing me off.
(1),yes you will have to raise CPU-NB voltage when raising the CPU-NB frequency,the NB voltage has nothing to do with this,it's the voltage supplied to the 790 chipset,and you can leave this between 1.24v-1.26v quite happily,depending on how high you try and go on your cpu-nb frequency,try using between 1.35v-1.40v on this.
(2)Taking NB voltage out of the equation,it's really trial and error on this one.
(3)There is not much to be gained in raising the HT link above stock 2000,so yes you can raise the CPU-NB frequency without touching the HT link speed,hope this helps.
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post #5234 of 9641
Quote:
have attempted to adjust the NB-CPU and HT Link and their associated voltages with limited success (2400mhz max reached). After reading Tony's (OCZ Moderater) recommendations, it is highly recommended to bump up the speed of the CPU-NB when overclocking RAM to fully realize the RAM's potential, but my question is this...

CPU-NB ratio that should be remembered is that the CPU-NB Frequency should be At Least (Minimum) 3 times that of the Ram Frequency. So if the ram is 1600, you would multiply 800 by 3 to come to 2400Mhz CPU-NB or more. This is best to acheive the most performance from your Ram... Obviously if one can run higher CPU-NB Frequencies, stably, then by all means feel free to. JOMT
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post #5235 of 9641
Thanks for the quick response. I tried:

CPU-nb 2600 @ 1.375
nb 1.25

and the system won't post. Weird huh? Should I unlock my core or adjust CPU core control?

Now running CPU-NB at 2400mhz @ 1.2v
Edited by algreen - 2/28/10 at 12:55pm
    
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post #5236 of 9641
Quote:
Originally Posted by algreen View Post
Thanks for the quick response. I tried:

CPU-nb 2600 @ 1.375
nb 1.25

and the system won't post. Weird huh? Should I unlock my core or adjust CPU core control?
Your ram voltage looks wrong my friend,1.55v,unless there "eco's",you will need more voltage.

These are the settings i use for 4.1ghz,24/7,for some time now,should give you some idea of voltages needed.Just remember what works for me,may not work for others.

Edited by moorhen2 - 2/28/10 at 1:11pm
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post #5237 of 9641
Quote:
Originally Posted by moorhen2 View Post
Your ram voltage looks wrong my friend,1.55v,unless there "eco's",you will need more voltage.

These are the settings i use for 4.1ghz,24/7,for some time now,should give you some idea of voltages needed.Just remember what works for me,may not work for others.


IDK man, look at his timings! They're pretty loose and G.Skill normally has some pretty low voltage Ram requirements to begin with.

Plus he on a C2 Processor running 2600 and 1600Mhz Ram.

Al,

Set your "CPU-NB Voltage" (NOT "CPU-NB VDD Voltage"- Leave that alone) to 1.3-1.32v @ 2600Mhz Freq. What is your Ram rated at for stock Voltage?
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post #5238 of 9641
Quote:
Originally Posted by Mastiffman View Post
Loosening these settings up while attemping to run higher Ram frequencies will help. How much really depends on the Ram. Even if you are set to 1600 @ Manual CL8 Timings and you lossen these settings, you can see the results through Everest Memcache bench that they impair the latency, Mildy. But it can increase stability. Doesn't always mean that it will... So defeintely worth the try.
Yes. I know that ... hmmm I'll try to change timings but I can't forget about one thing ... yesterday I ran my rig at 3825 and it has passed 20 passes of LinX without any errors and then in Prime95 after 10 minutes everything has gone BSOD

Quote:
I wouldn't think so being that the HTRClk can be taken as high as 340Mhz+ on this board. So with a multi of x13, that should be more than enought o get past 3.7 stably. But then again I guess that it depends ont he CPU quality.

Pan, did you ever take a pic of the CPU's IHS before installing it to verify the OPN, Die Cut and Batch Date? That might gives a good idea of what to expect out of your Processor...
Yeap... I have even posted it somewhere... but I will post it again:


Here it is
Quote:
HERE is the Link to my Rams MFR Page.
Thanks a lot for this link ... you know I think first of all I am gonna change (in some time) my CPU for 955 BE or 965 BE (reading all these post on this forum it will be a tough choice now

Thanks a lot guys for your help ! Afterall 3.6 GHz isn't that bad
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post #5239 of 9641
Quote:
Originally Posted by Mastiffman View Post
IDK man, look at his timings! They're pretty loose and G.Skill normally has some pretty low voltage Ram requirements to begin with.

Plus he on a C2 Processor running 2600 and 1600Mhz Ram.

Al,

Set your "CPU-NB Voltage" (NOT "CPU-NB VDD Voltage"- Leave that alone) to 1.3-1.32v @ 2600Mhz Freq. What is your Ram rated at for stock Voltage?
Just trying to give him some pointers man,i know your the "memory guru",and i bow to your superior ram knowledge,lol!!
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post #5240 of 9641
Quote:
Originally Posted by Mastiffman View Post
IDK man, look at his timings! They're pretty loose and G.Skill normally has some pretty low voltage Ram requirements to begin with.

Plus he on a C2 Processor running 2600 and 1600Mhz Ram.

Al,

Set your "CPU-NB Voltage" (NOT "CPU-NB VDD Voltage"- Leave that alone) to 1.3-1.32v @ 2600Mhz Freq. What is your Ram rated at for stock Voltage?
My ram is rated at 1.5v but I added an extra .05 to make them 1.55 just for a little extra headroom.
I read it was preferable to adjust the CPU-nb CDs and not the CPU-nb voltage, but I'll give er a try.
    
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