Need help with RAM Timings

I need help with changing my memory timings on my asus p9x79 pro board. Right now it is set on auto and the timings are operating above there rated ones. I saw that I could enable this by using XMP mode but i was worried this may make my cpu run unstable. So my question is should I enable XMP or do it manually and if I do it manually how should I go about doing it. AlSO COULD THIS HAVE CAUSED MY AMD DISPLAY DRIVERS TO STOP RESPONDING. Sorry I can't reply till after 7PM Eastern Time do to work but I appreciate your responses.

Rated Timings Current Timings
CAS# Latency (tcl) 9- 11
RAS# to CAS#(trcd)9-11
RAS# Precharge(trp)9-11
tRAS 24-28
tRC 33-39
tWR 12-12
tRRD 5-5
TRFC 128-128
twtr 6-6
TFAW 24-24
twcl 7-na
command rate 2-na

Ram I am using
24 answers Last reply
More about need timings
  1. For the display problems (I just installed the same mobo in my main gaming rig), you need to update to the most recent BIOS version (2002). Get it at:

    For the memory, I would let the BIOS manage it via the AUTO setting, but would not enable XMP as I don't believe that memory supports an XMP profile.
  2. it does a xmp profile should i still leave it at those settings?
  3. Good catch on the XMP support, oh mighty master.

    BTW, you do need to apply the BIOS update (without question) to solve the display driver issue.
  4. h my cpu is the i7 3820 at 3.6ghz
  5. COLGeek said:
    Good catch on the XMP support, oh mighty master.

    BTW, you do need to apply the BIOS update (without question) to solve the display driver issue.

    Did this solve your driver issues
  6. generalissimo said:
    Did this solve your driver issues

    Yes, absolutely. The board shipped with an older BIOS. The current 2002 version took care of the issue.
  7. Quote:
    yes, try it like that.
    keep everything the way you have it and just hit XMP.
    for some reson if it doesn't boot then don't sorry, we'll get it.

    also what is your graphics configuration.?

    XFX 7950
  8. I have historically had issues with XMP profile so prefer to set timings manually. NOTE: enabling XMP usually bumps ya RAM voltage which seems to get some people very excited. It's oft stated in forum posts that Intel has issues with voltages above 1.5v ..... nothing could be further from the truth.

    1.5 volts is for the JDEC profiles .... most XMP profiles for i5 and i7 RAM require 1.65. In fact, over 2/3 of the RAM on Intel's XMP compatible list are over 1.50 volts.

    Intel® Extreme Memory Profile (Intel® XMP) allows you to overclock compatible DDR3 memory to perform beyond standard specifications. It’s designed to enhance the gaming features built into Intel® technology–based PCs. If you like to overclock and squeeze as much performance from your PC as possible, then memory based on Intel XMP gives you that extra edge you need to dominate—without breaking a sweat.1

    Predefined and tested Intel XMP profiles can be loaded via BIOS or a specific tuning application through a computer’s operating system. Often the easiest way to load Intel XMP profiles is using a tuning utility, which may be available depending on the particular board manufacturer. To learn whether a tuning utility is available on your system, you should contact the board manufacturer.

    Most listed compatible i5 / i7 RAM is 1.65 .... again, at least according to Intel's compatibility lists

    Intel's approved i7 Compatibilty List (April 2012) includes:

    34 1.65 volt modules
    07 1.60 volt modules
    19 1.50 volt modules
    01 1.25 volt modules
  9. The G.SKILL F3-12800CL9D-8GBRL 2x4G 'does' support XMP -- BUT -- it's a Dual Channel Kit in a Quad Channel MOBO/CPU.

    The i7-3820 is a very troublesome CPU and the first thing I strongly recommend folks do with that SB-E is to update their BIOS to the latest version. BUT the ASUS current MOBO's are all migrating to the (.CAP) template BIOS from the (.ROM); currently the only advantages to the (.CAP) is a couple GUI issues in Windows 8.

    Therefore, look at you current BIOS version and I'd upgrade to BIOS rev 1203 (.ROM) IF you have a pre-1203 BIOS installed. To verify you can either boot into the BIOS or use CPU-z 'Mainboard' tab; CPU-z -

    To update your BIOS you have two good options and one really bad option; use either ASUS EZ Flash 2 Utility from the BIOS or USB Flashback. Download the BIOS 1203 - extract the (.ROM) from the (.ZIP) file, copy the (.ROM) file to a FAT32 USB Flash Drive located on a Black USB 2.0 port (not a Blue USB 3.0), boot into the BIOS / Tools / ASUS EZ Flash 2 Utiity and update the BIOS.

    ASUS EZ Flash 2 -
    ASUS USB Flashback (requires renaming to P9X79PRO.ROM & WHITE USB 2.0 port) -

    Next, I assume the RAM is installed in it's proper DIMM slots; see -

    Further, that you have installed the latest Drivers from ASUS (i.e. are using the DVD in the Box as a coaster); latest drivers:
    ASUS -
    Intel (when it's back online) -
    AMD HD 7950 (select HD 7950 and your OS ) -
    Windows 7 64-bit -

    My recommendation is to use/get a Quad Channel kit (assuming 64-bit OS):
    $105 Mushkin Enhanced Blackline 16GB (4 x 4GB) DDR3 1600 Model 993995 -
    $114 Corsair Vengeance 16GB (4 x 4GB) DDR3 1600 Model CML16GX3M4A1600C9B -
    $120 Mushkin Enhanced Blackline 16GB (4 x 4GB) DDR3 1600 Model 994043 -
  10. I am enabling xmp now. crossing fingers that this resolves all my stability issues
  11. generalissimo said:
    I am enabling xmp now. crossing fingers that this resolves all my stability issues

    Have you updated the BIOS yet? If not, you will definitely continue to have the driver issues with Catalyst. You are working on 2 different things in this thread and the tweaks to your memory will not solve the other issue. Just a reminder.
  12. Everything is working now I am just burning it in. I got one crash saying overclock failed but is running good now. I was playing skyrim and am going to burn it in.
  13. Run 4-passes of Memtest -
  14. i think my cpu is being overclocked by the xmp setting. anyone know how to disable this
  15. how do i take a screenshot of cpu-z
  16. is a 1200mhz core clock normal?
  17. so its good
  18. because i am not doing anything intensive right now
  19. thats the memory tab
  20. I assume you either enabled XMP or manually entered the rated values manually in the BIOS to mimic the XMP i.e rated values. F3-12800CL9D-8GBRL DDR3-1600 9-9-9-24-2N @ 1.50v.

    My solo concern now is that it will pass 4-passes of Memtest86+ without an error. IF you do then change the timings to 9-9-9-27-2N and if needed +0.05v to the DRAM voltage or 1.55v.

  21. ok thanks for all your help everybody
  22. Best answer selected by generalissimo.
Ask a new question

Read More

Asus Motherboards