Do any mATX S939 motherboards support 4GB @ 400mhz?

[iamcrunchie]

Does anyone know of any MicroATX s939 motherboards that will still run the memory at 400mhz when all dimm slots are full?

i currently have the MSI k8ngm2-fid board which unfortunately reduces the speed to 333mhz once i put in a third memory module. It still runs at 333mhz with 4 as well.

All memory modules are identical OCZ gold 1GB modules.

the MSI manual does actually mention this but other boards such as the ASROCK dont actually say in the manual and i cant get any reply from their customer services

Have any of you had any experience with this?

cheers

crunchie

 

[Zap]

If you have an overclockable mATX board you can always run the HTT at 240MHz. Otherwise, I think it's a limitation of the A64 memory controller and not the motherboard.

 

[Peter]

Once again the reminder: This is how DDR DIMMs are specified to operate - one DIMM per channel at 200 MHz (DDR400), fallback to 166 for two, and for three it's down to 133.

This is what automatic setup should do, because that's how things have been calculated to work across the entire tolerance range of voltages, temperatures, layout peculiarities and chip response times. If the board's BIOS allows, you can still push your individual luck.

 

[iamcrunchie]

Thanks for the replies,

Ive overclocked the cpu-ldt (htt?) to 222 at the mo and it seems stable.

That brought up my mem benchmark a bit more and the cpu goes off the scale now lol

One thing that confuses me is the cpu-NB frequency (currently 1000mhz)
and the NB to SB frequency(currently 800mhz)

When i put up the NB-SB frequency to 1000mhz i get slower results:Q

 

[Peter]

The SB doesn't need anywhere near as much bandwidth, just leave it at 800.