TWIN3X2048-1333C9 Problem - looking for advice

[DraganUS]

First of all Hi to all everyone.

 

I have this problem with this TWIN3X2048-1333C9 ram. I will try to provide as much as possible data with my testing to get this ram to work at 666MHz.

 

 

I have a GA-EP45T-UD3P rev 1.0. I have oc my cpu to 4.0 GHz (333x12) stable.

Now my problem is that no matter what I do I can get this ram to work over 500MHz. If I try to boot @ 1066 with 7-7-7-19 or 8-8-8-22 no go even with a testing from 1.5 to 1.7V.

 

Here is some of my observation playing with a MCH straps with this mobo(200,266,333,400 strap) and their multiplayers.

 

Gigabyte MCH Strapping

 

x.xxA -> FSB 266MHz = Possible Multi 3.00A & 4.00A

x.xxB -> FSB 333MHz = Possible Multi 2.40B & 3.20B & 4.00B

x.xxC -> FSB 200MHz = Possible Multi 4.00C

x.xxD -> FSB 400MHz = Possible Multi 2.00D & 2.66D & 3.33D & 4.00D

 

Test out:

 

3.00A -> FSB 266MHz = 1000MHz (6-6-6-16 & 7-7-7-19)= POST Stable 10 passes LinX

4.00A -> FSB 266MHz = 1333MHz(9-9-9-24) = NO POST

 

 

2.40B -> FSB 333MHz = 800MHz(6-6-6-16 & 7-7-7-19) = POST Stable 10 passes LinX

3.20B -> FSB 333MHz = 1066MHz(7-7-7-19 & 8-8-8-22) = NO POST

4.00B -> FSB 333MHz = 1333MHz(9-9-9-24) = NO POST

 

4.00C -> FSB 200MHz = 1333MHz(9-9-9-24) = NO POST

 

2.00D -> FSB 400MHz = 667MHz(6-6-6-16 & 7-7-7-19) = POST Stable 10 passes LinX

2.66D -> FSB 400MHz = 889MHz(7-7-7-19 & 8-8-8-22) = POST Stable 10 passes LinX

3.33D -> FSB 400MHz = 1111MHz(9-9-9-24) = NO POST

4.00D -> FSB 400MHz = 1333MHz(9-9-9-24) = NO POST

 

All this testing has been done with 1.7 V for ram.

 

I am trying to run them at 1333MHz(9-9-9-24), but as u can see no matter what I try it doens want to post above 1000MHz.

Is there something I am missing with this motherboard or it could be ram?

 

Thanks for any help

 

Dragan

[RAM GUY]

First thing is you cannot run the memory faster than the CPU FSB with Intel chipsets and with the CPU you have the memory should be set to DDR800, I see you are over clocking the CPU so what is the exact CPU FSB? That will be the max memory setting you can set.