DDR 2 Memory running slow - timing issue?

[Andy_H]

I'm running 800Mhz DDR 2 memory on an Asus M2V motherboard, but it seems to have dropped to 667Mhz.

Before I updated the BIOS CPU-Z saw my memory at 400Mhz as it should. After the bios update it is now running at 333.33 according to CPU-Z. However, there are now a lot of options under the RAM settings in the BIOS, whereas there were no timing settings before.

I'm guessing either somethings wrong in the BIOS settings or in the latest update they've changed something making this RAM incompatible (which seems less likely)

CPU-Z now:

And the BIOS settings at the moment:

Any help would be greatly appreciated

Thanks, Andy

 

[Andy_H]

I've set the memory mode to manual now and tried entering both the 400Mhz timings at 1.8v (5 5 18 23) and the 4 4 4 12 24 timings at 1.95volts (the highest my board would go to)

Its still showing up in CPUZ as 366.6Mhz. When i was overclocking the chip last night from 4200 to 4600 the RAM frequency in CPUZ increased to around 380Mhz, is this because the frequency read in CPUZ is dependant on the FSB?

 

[Andy_H]

Both sticks are the same (http://www.crucial.com/uk/store/partspecs.aspx?IMODULE=BL2KIT25664AA80A). I can't find an option in the BIOS for EPP, i'm assuming because its an old board it doesn't support it.