New Ram Checksum Error

[sutty86]

Hi guys
just installed some brand new ddr2 ram and its coming up with checksum error
but problem is ive checked my memory with windows and its fine but its my overclock which is doing this
i have a athlon 240 at the minute overclocked to 3.4ghz and i get the error but soon as i default it to 2.8 (stock its fine) my memory settings are on auto
and explanation why it wont let me overclock

Cheers

[GoNz0]

auto + overclock = memory error

try upping the memory voltages and/or relaxing the timings

[Domestic_Ginger]

Relax the timings on your ram as the above has said. I presume you're just upping the HT ref CLK. As you raise this you are also increasing the speed your ram is running and it looks like it can't cope. You may need to relax your CPU-NB and HT link too multis too.

[sutty86]

cheers fellas yes im just changing the fsb in bios ,
thing is though my old ram was 557mhz and my new ram is 667mhz , but the older ram would let me OC to 3.4ghz

any tutorials on memory underclocking?

[Domestic_Ginger]

Google for-

AMD_Dragon_AM3_AM2_Performance_Tuning_Guide. pdf

Its the nuts.

Was it 533mhz btw? You can set your ram to that in the bios. I'm a bit lazy to work it out; whats your multiplyer and FSB at 3.4ghz?

[sutty86]

14 x 245 (245 being the max on my athlon 240)
that was with my old ram ,
on the 533mhz

[sutty86]

intresting read but my current mobo wont support amd overdrive
ga-m720-us3 nvidia chipset
should recieved my 780 chipset tomorrow though biostar 780g

[Domestic_Ginger]

I wouldn't use AOD and use easytune unstead if your board supports it. The non AOD bits are what you want.

AOD is horrible.