Puzzling memory problem

  • Thread starter Thread starter Paul Robinson
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Paul Robinson

Hi
wonder if anyone can help.
I have 3 sticks of DDR memory all 400Mhz PC3200, but when the BIOS
screen runs on boot up it shows 'memory clock 266'.

Am I doing something wrong, surely it should be 400?

Paul
 
Paul said:
Hi
wonder if anyone can help.
I have 3 sticks of DDR memory all 400Mhz PC3200, but when the BIOS
screen runs on boot up it shows 'memory clock 266'.

Am I doing something wrong, surely it should be 400?

Paul
Click to expand...

With some motherboards and/or some RAM you may have to set the speed
manually either in the BIOS or with jumpers on the motherboard. It can also
be affected by the CPU. What motherboard and CPU do you have?

Kerry
 
Kerry Brown said:
With some motherboards and/or some RAM you may have to set the speed
manually either in the BIOS or with jumpers on the motherboard. It can also
be affected by the CPU. What motherboard and CPU do you have?

Kerry
Click to expand...
The motherboard appears to support it.
It's a Winfast K8S755a Mboard, and an AMD 3000+ CPU.

Paul
 
Paul said:
The motherboard appears to support it.
It's a Winfast K8S755a Mboard, and an AMD 3000+ CPU.

Paul
Click to expand...

I wonder if the problem is that the board uses dual-channel memory and
you are using 3 memory chips instead of 2 or 4. Have you tried removing
one of the memory chips and seeing what the speed is? Also the board
may automatically drop the memory speed if you are over clocking the
computer.
 
Paul said:
Hi
wonder if anyone can help.
I have 3 sticks of DDR memory all 400Mhz PC3200, but when the BIOS
screen runs on boot up it shows 'memory clock 266'.

Am I doing something wrong, surely it should be 400?

Paul
Click to expand...

In the BIOS settings for DRAM Configuration Settings set "1T/2T memory
timing" to 2T, set "DDR timing setting" to Manual, and set "Max mem clock"
to 200. Be aware that if your RAM doesn't support this your computer may not
boot up and you will have to use the Clear CMOS jumper to clear all the
settings back to the default. If this doesn't work your RAM sticks may not
be compatible with one another. Are they all the same brand and part number?

Kerry
 
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