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Gvgd94

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Mar 16, 2013
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Hello all, i have a asus p8z77 v le plus mobo with an i5 3570k and 8gig of kingston red ddr3 ram (says 1600mhz speed on the box) But in the bios it says its running at 1333mhz. Any idea on how to setup my ram correctly? i have everyting at stock speeds :)

kind regards
 
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smorizio

smorizio

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Jan 22, 2010
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Hi it an easy fix. In the ai over clock section of the bios look for dram xmp profile. By default it off. Turn it on and save your bios settings then reboot.
When you reboot the mb going to duble post it normal. Go into windows then reboot and go back into the bios. The ram should be running at it rated speed.
 
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Gvgd94

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Mar 16, 2013
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whats an xmp profile? :L sorry im kinda new to all this :)
now my ram is running at 1333speed in the bios and cpuz says its at 1.5v. Is that good for a 3570k at stock?

 
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smorizio

smorizio

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Jan 22, 2010
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XMp profile is intel over clock settings for ram. It built into ram chips. If you run Cpuz under memory tab,spd info the last colum is the xmp info line.
If you look on your mb cd there a PDF file of your mb bios settings.
In the dram settings is a line that say xmp profile........off/disabled.
Just change it to on..enabled and the ram will jump to 1600 speed.
 
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Gvgd94

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I can also just set it in the bios itself, not via that xmp and select 1866, 1600, 1333 etc Does changing it to 1600 here also alter the voltage?

 
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photonboy

photonboy

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Jun 20, 2006
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https://en.wikipedia.org/wiki/Serial_presence_detect

1) as mentioned, use "XMP"; it should automatically try to set your CPU and RAM to their optimals settings (frequency and timings)

2) if you manually change the settings, do NOT exceed 1600MHz (RAM does not overclock well). Again, if possible you want the BIOS to do that via SPD (through XMP).

3) Overclocking the CPU also affects the RAM (can overclock it and become unstable). If you overclock the CPU, be sure to change the MULTIPLIER for your RAM so you don't exceed 1600MHz.
*Do NOT overclock the CPU unless you've:
a) verified MEMTEST for at least one hour at stock CPU/MEMORY, and
b) confirmed stable PC for several days

4) Some Asus motherboards can be SLIGHTLY overclocked while also maintaining power management settings. This is what I did (different motherboard):
a) boot to BIOS
b) click XMP (confirm proper CPU/RAM default frequencies)
c) click "overtune" (or similar name. I forget. You may/may not have this.)
d) (should REBOOT, enter BIOS again)
e) *This got slightly weird: my RAM was now incorrect, but my CPU was at 4.2GHz (it's Turbo setting). I clicked "XMP" again (XMP->overtune->REBOOT->XMP) and now my RAM settings were correct again and my CPU dropped to 4.1GHz.

Long story short, I had a slight overclock (4.2GHz up from 3.9GHz Turbo), my RAM settings were optimal and I still had power management working.

*Your motherboard may very well be different. Don't forget to run MEMTEST.
 
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photonboy

photonboy

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Jun 20, 2006
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It's still good idea to go verify the actual RAM/CPU settings in the BIOS. Don't overclock (performance) initially but still verify the important settings:
a) CPU frequency
b) CPU Turbo is enabled
c) CPU all cores are enabled
d) CPU power management (set all to AUTO; in fact for now MOST SETTINGS should be Auto)
e) RAM frequency is 1600MHz (if possible; depends on motherboard. may require an overclock)
f) RAM timings

Basically it's a good idea, to find the XMP setting and click it yourself, as well as reading through the motherboard Manual to figure out what various settings do. Most are confusing to the laymen, whereas make little sense until Google/Wikipedia is used.

*Other:
1. Did you know that some SATA connections might not work properly with your DVD player and cause bad burns? (manual)

2. Did you know you can change the BOOT ORDER of drives? (For example, to run MEMTEST off of a CD/DVD your DVD must preceed the Windows drive. additionally, sometimes the wrong HDD is selected and you get a boot error).

3. Did you know that BIOS updates for the motherboard sometimes add PROFILES for your DDR3 memory?
(If your DDR3 memory is NOT in the BIOS yet the SPD doesn't work so the BIOS can't automatically apply the correct settings. My last motherboard kept crashing in Windows. MEMTEST revealed memory errors, and a BIOS update and "XMP" to apply default settings made things STABLE. I had the same issue for my SSD.)

4. Did you know that FAN CONTROL works best with:
a) proper BIOS settings
b) Installed and configured FAN CONTROL software from motherboard support site for your exact board/Windows version.
c) PWM or Voltage fans as appropriate hooked to the proper connector (modern motherboard may require a PWM fan for your CPU plugged into the CPU_FAN slot).
 
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