Posted 18 January 2008 - 04:03 PM
Posted 18 January 2008 - 05:47 PM
The memory will only run at DDR400 if the processor is running at FSB 200Mhz. Otherwise it'll slow down.
Posted 18 January 2008 - 05:53 PM
There's a few possible explanations for this:
1. (The most likely) The speed the memory runs at is related to the base frequency that the processor etc runs at (also known as the FSB). For example, if your cpu runs at an FSB of 166MHz, then the chances are the memory will run at 333MHz because DDR multiples this FSB by 2. Some boards however will let you run the memory at a higher speed than the cpu FSB
2. The other possibility is that the system doesn't properly support 400MHz for the memory bus (even though it may claim to) - this can happen when the system has all the memory slots filled for example.
3. If you mix and match ram speeds (i.e DDR333 and DDR400) then the system will run them all at the lower of the two speeds.
The first thing to check is the FSB your cpu is supposed to be running at. To do this, you'll need to know exactly which cpu you have...
Posted 18 January 2008 - 08:01 PM
Posted 21 January 2008 - 03:54 PM
Posted 21 January 2008 - 05:38 PM
I've had a look on Mach Speeds website for your motherboard and in the detailed specs they state the following:
'Maximum memory speed may decrease when both DIMM1 & DIMM3 are filled with double sided memory modules'
Assuming that you are using double sided memory modules, then this probably explains why the memory speed is only 333MHz. I suggest you try placing the modules in DIMM 1 & DIMM2 or maybe DIMM2 & DIMM4.
Posted 22 January 2008 - 01:26 PM
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