xmp question

[jimi]

i have 8 gb ripjawsx 1600 but my bios was only reading 1333 so i turned on my xmp profile so it read 1600mhz. My question is if you turn on xmp? does cpu overclock by itself? i have a msi p55gd65 and an i5 750 on stock clocks. cpu z shows that my cpu clock reaches 3.8ghz under load

[Wats]

Nah, xmp just sets up the timings, frequency and voltage of the memory.

 

3.8? You sure setting xmp is all you did? Have you tried just re-launching cpu-z or double checking with something like aida64?

[winny3141]

From my understanding, xmp profiles are made by manufacturers to set ram frequencies to how they are supposed to run by the manufacturers standards. Maybe your platform is supposed to only accept 1333 MHz at stock clocks, and as a result, must overclock your cpu to facilitate with the ram.

Hope I was of some help!

- winny3141 :D

[jimi]

From my understanding, xmp profiles are made by manufacturers to set ram frequencies to how they are supposed to run by the manufacturers standards. Maybe your platform is supposed to only accept 1333 MHz at stock clocks, and as a result, must overclock your cpu to facilitate with the ram.

Hope I was of some help!

- winny3141 :D

maybe, i just turned them back to stock speeds for now, tnx

[blknight88]

Well your base clock is set to 133 by default and then is multiplied by 20 and then by 24 with turbo mode.  

Stock = 20* 133 = 2666 MHz

Turbo = 24* 133 = 3200 MHz (Roughly)

 

Your ram is set to a ratio of 10. So if you do the math, 10* 133 = 1333 MHz

Your motherboard might have an option to change this ratio.

 

When you changed it to XMP to get the ram at 1600 MHz it requires 10 * 160 MHz

This base clock effects your CPU as well, so it changes to:

 

Stock = 20* 160 = 3200 MHz

Turbo = 24* 160 = 3800 MHz (Roughly)

[jimi]

got it!  thanks