You don't need it, I have 4x1GB dimms at 1066 loading vista. it looks like there are a few factors at work here.
1 The CPU's MCH has to be able to do it
2 The bios needs the right code
3 Vdimm looks to be around 1.9 to 2V
4 Drive strengths
I have not changed byte 9 on this test and im doing 1066, I will test with micron dimms also soon.
regards byte 9 its the option for max speed supported at CL...NOT CL-1 etc.
you have 667 set or 800, you have to change the byte its self to 17 as the drop down does not have the correct option for 533
Byte top left is 0 count to the right till you hit 9 and stop, yours is 30, change it to 17. Then hit edit and fix checksum, then hit open,write, and flash the modules.
Do this and you have no warranty, if the dimms fail to boot in any board after this you are on your own
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