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Twin 2x4096-8500C7 G can't get 1066Mhz


ade670

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Guys,

 

I have a compatibility issue with my new build.

 

I have an Nforce 750i Sli 123-yw-E175 motherboard running a Quad Core Q6600 processor. My Ram specs are 4 gigs - Corsair Twin2x4096-8500c7 G.

 

I cannot get the ram to work in SLI mode -1066mhz. I am stuck at 800mhz.

 

i think the drama is the timing. the Ram has a 7-7-7-20 2.0v config for the higher speed. The Mb will only allow a cas value of 6 maximum.

 

Is there a way of forcing the ram to the higher speed or am I stuck at the JEDEC standard 6-6-6-18.

 

My gut feeling is I have been duped on the ram - Any help appreciated.

 

Ade

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I have just read the manual for your board. Please refer to the system (Page 7 of 58 PDF) specifications and you will see support for 533/667/800 Mhz DRAM.

 

As well, the RAM you purchased is not EPP programmed for SLi Ready modes.

 

You may wish to return the memory and purchase 800Mhz memory that runs with CL4. In your system, that will be faster than your 1066C7 memory even if it was supported. If you are looking to use SLi linking, then be sure that the DRAM you purchase is EPP enabled.

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Wondering if anyone can help me out?

I have an Abit P35 Pro and recently changing from 2GB CM2X1024-6400C4 to 4GB Twin2x4096-8500c7. For some reason at default my rig wants to run these sticks at 1200mhz? Also I am running a 2.4 Intel Quad Core. So First thing I tried was a 6 multiplier X 400 with a 1:1 ratio that had my new sticks running at 800mhz, then I am trying to get to the full 1066 but I can't figure it out? Right now I am at a 9 multiplier at 266mhz with a 1:2 ratio giving me 1064mhz.

Is this the best option for me? Or am I doing something wrong that can offer me a full 1066mhz?

 

And also I want to double check, my voltage is set to 2 volts, is this correct?

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Raise your FSB from 266 to 267. Those modules should be 2.1v and should be documented on the modules themselves.

 

Wondering if anyone can help me out?

I have an Abit P35 Pro and recently changing from 2GB CM2X1024-6400C4 to 4GB Twin2x4096-8500c7. For some reason at default my rig wants to run these sticks at 1200mhz? Also I am running a 2.4 Intel Quad Core. So First thing I tried was a 6 multiplier X 400 with a 1:1 ratio that had my new sticks running at 800mhz, then I am trying to get to the full 1066 but I can't figure it out? Right now I am at a 9 multiplier at 266mhz with a 1:2 ratio giving me 1064mhz.

Is this the best option for me? Or am I doing something wrong that can offer me a full 1066mhz?

 

And also I want to double check, my voltage is set to 2 volts, is this correct?

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