Adjusting memory speed on P55 UD5

Spokwiththeears

Spokwiththeears

Spokwiththeears

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3 Mar 2009
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591
Hi, I'm trying to set the speed of my memory in the bios to 1600mhz, which is its rated speed. The thing is I can't increase the speed of the memory without the CPU speed increasing, does anyone know how I can set the memory speed without increasing the CPU speed?
 
You can adjust the speed of the memory using the Memory Multiplier.

Memory Frequency = Base Clock Frequency (BCLK) x System Memory Multiplier (SPD)

This should not change your CPU speed, not sure how your are managing to do that.

There will also be an eXtreme Memory Profile option, however this may reset any CPU overclock you have.
 
At the moment the Base Clock Frequency is set to 133 with the CPU running at 2.66GHz (133x20) and the memory at 1066MHz (8x133). When I change it to 200 so that the memory is running at 1600MHz the CPU also changes to 4GHz.

I also need to set the voltage to 1.65 but there is only an option for 1.64 or 1.66, would 1.64 be ok even if I wanted to try and set the timings to 8-8-8-24@1600MHz (they are supposed to be 9-9-9-24.)
 
Your changing the Base Clock Multiplier not the Memory multiplier! ;)

The Memory Multiplier is the x8 one, you need to change that. As I said you can either increase this, or you can enable xmp.
 
I will have another go, while reading a little more carefully :D

Unfortunately the memory I have doesn't have a extreme memory profile, its the OCZ Obsidian 2x2GB 1600MHzC9.

Thanks again for the help :)
 
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