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Help with ratio Please

post #1 of 5
Thread Starter 
Hi,

I need help with Memory ratio
CPU E8200 @ 8x 405MHz = 3240MHz
Memory DDR2 G.SKILL 2x1 gig 1066Mhz 5-5-5-15 running

I have the ratio set at 3:4 which gives me 2x 540 = 1080MHz timings set to 5-5-5-15 2T TRC22.

I see alot of people saying to run at 1:1 ratio is this right.
It looks like a realy big overclock on the Memory to me.
1:1 ratio with this overclocked cpu would give me 2x 800 = 1600MHz on the Memory.

Am i right with my calculations and should i have the Memory running at 1:1 or is that to high for the Memory.

Thanks
Gaz
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post #2 of 5
You are not right with your calculations.

A 1:1 ratio would give you 405MHz, or 810 DDR. Your current 3:4 ratio is giving you 540Mhz, or 1080 DDR, a rather minor OC on the memory.

1:1 is the lowest/slowest ratio on most modern boards. Unless you have an NVIDIA chipset, you should only be using 1:1 if the NB or memory cannot handle a higher one.
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post #3 of 5
Thread Starter 
Hi Blamless,

Sorry for the late reply i have been away

I do have the NVIDIA chipset 780i Striker 11 Formula Mobo.
When i change the ratio to 1:1 it also has a MHz value for the memory in the bios and it says 1620MHz, not sure why but i understand what you are saying as it should be 810MHz at 1:1 but it says 1620 when i change it to this.

Any thoughts on why this happens guys
Thanks
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post #4 of 5
Quote:
Originally Posted by Gaz32 View Post
Hi Blamless,

Sorry for the late reply i have been away

I do have the NVIDIA chipset 780i Striker 11 Formula Mobo.
When i change the ratio to 1:1 it also has a MHz value for the memory in the bios and it says 1620MHz, not sure why but i understand what you are saying as it should be 810MHz at 1:1 but it says 1620 when i change it to this.

Any thoughts on why this happens guys
Thanks
You´re right and that because you put in FSB in quad (405 x 4 = 1620) and therefore you get 1620 for the memory with 1:1 and it´s not going to work if you try.

You should set linked and sync mode and then you get memspeed 810 (405 x 2 = 810) but you should only go with 1:1 if you can set 1T and 4-4-4-12 Trc18 otherwise you loose performance, so keep that 1080@5-5-5-15 2T Trc22 if you don´t reach 800 4-4-4-12 1T Trc18.

Otherwise you can stay with 3:4 and try to push your CPU towards 425 8 3,4 and you may reach memspeed 1133@5-5-5-15 2T Trc22.
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post #5 of 5
Thread Starter 
Thanks again Ghostleader, i will keep it at 1080@5-5-5-15 2T and bump the cpu up and see how it goes

Cheers
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