GA-X58A-UD3R question

So I am new to this and I did download the bios pdf guide and i still have questions.

I have a GB GA-X58A-UD3R motherboard

I just purchased Patriot Viper 2 Sector 7 Ram 12GB kit, 4GB X 3 dims for a total of 12GB
I also have Patriot Viper Ram 6GB kit, 2GB X 3 dims for a total of 6 GB

I would like to install all 6 dims for a total of 18GBs if possible.

Both Dims are PC3 - 10666 @ 1333 Mhz

Both in Bios and Windows 7 64bit it shows 10GB usable and 8 missing. I have a dedicated graphics card so i know its not reserved.

How can i configure my bios and windows to use the whole 18GB if possible
31 answers Last reply
More about x58a ud3r question
  1. What is your Windows x64bit version?
  2. To be able to address more than 16GB RAM, u need to have W7 Pro and higher windows.
  3. U need to place the 4GB sticks in to the Blue slots and 2GB in to white.

  4. nikorr said:


    I have win7 home x64

    Is it possible to do that configuration ? Also once I change the dims around is their any thing I need to change in the bios?
  5. rcorrea said:
    I have win7 home x64

    Is it possible to do that configuration ? Also once I change the dims around is their any thing I need to change in the bios?

    Try only 16GB.
  6. You know, if u use the different sizes, than u don't have your RAM configured in the triple channel mode, but it is flex mode, so performance is lower.

    But it is nothing to worry about.
  7. So would it be better idea to just use 2 12gb kits and win7 pro to avoid all this confusion? I'll move the dims around in the morning and see what happens
  8. rcorrea said:
    So would it be better idea to just use 2 12gb kits and win7 pro to avoid all this confusion? I'll move the dims around in the morning and see what happens

    It should work, just not in the triple mode.
  9. BTW, do they have the same voltage, the RAM sticks?
  10. nikorr said:
    BTW, do they have the same voltage, the RAM sticks?


    I am not sure where would I find that out?
  11. On the butom @ Voltage.

  12. Slot1 1.50 1.50 1.50 1.650
    slot2 1.50 1.50 1.650
    slot3 1.50 1.50 1.650 1.500
    slot4 1.50 1.50 1.650
    slot5 1.50 1.50 1.650 1.500
    slot6 1.50 1.50 1.650

    I moved the dims but now it shows 8gb lol
  13. OK, do u see there is a part #, post 1 for each type.
  14. pvt36g1333elk
    pv7312g1333elk
  15. Go to msconfig and check if the Max. memory is clear...

  16. Install:

    CPU: | 2GB | 4GB | 2GB | 4GB | 2GB | 4GB |

    BIOS: DRAM Voltage -> 1.64v and if needed QPI/Vtt Voltage -> 1.35v ; save & exit = yes
  17. nikorr said:


    ill check that out
  18. jaquith said:
    Install:

    CPU: | 2GB | 4GB | 2GB | 4GB | 2GB | 4GB |

    BIOS: DRAM Voltage -> 1.64v and if needed QPI/Vtt Voltage -> 1.35v ; save & exit = yes


    would that be for all dims or just some?
  19. The voltages goes across all DIMM slots, and otherwise the 4GB is in the primary DIMM per Channel and the 2GB in the secondary DIMM slots per Channel.

    When I searched both sets they're 1.65v at DDR3-1333 9-9-9-24-2N.

    BTW - duh, I forgot LGA 1366 defaults @ DDR3-1066 so add: System Memory Multiplier -> 10 ; 10 * 133.33 is DDR3-1333.

    Recap:

    1. Install CPU: | 2GB | 4GB | 2GB | 4GB | 2GB | 4GB |
    2. BIOS:
    System Memory Multiplier -> 10
    DRAM Voltage -> 1.64v
    QPI/Vtt Voltage -> 1.35v
    * CAS Timings

    Save & Exit = Yes

    Good Luck!

    --

    To set the CAS Timings:
    BIOS: {* CAS Timings}
    Extreme Memory Profile (X.M.P.) -> Disabled ; MUST be Disabled in ANY mix!
    DRAM Timing Selectable -> Quick
    CAS Latency Time -> 9
    tRCD -> 9
    tRP -> 9
    tRAS -> 24
  20. jaquith said:
    The voltages goes across all DIMM slots, and otherwise the 4GB is in the primary DIMM per Channel and the 2GB in the secondary DIMM slots per Channel.

    When I searched both sets they're 1.65v at DDR3-1333 9-9-9-24-2N.

    BTW - duh, I forgot LGA 1366 defaults @ DDR3-1066 so add: System Memory Multiplier -> 10 ; 10 * 133.33 is DDR3-1333.

    Recap:

    1. Install CPU: | 2GB | 4GB | 2GB | 4GB | 2GB | 4GB |
    2. BIOS:
    System Memory Multiplier -> 10
    DRAM Voltage -> 1.64v
    QPI/Vtt Voltage -> 1.35v
    * CAS Timings

    Save & Exit = Yes

    Good Luck!

    --


    To set the CAS Timings:
    BIOS: {* CAS Timings}
    Extreme Memory Profile (X.M.P.) -> Disabled ; MUST be Disabled in ANY mix!
    DRAM Timing Selectable -> Quick
    CAS Latency Time -> 9
    tRCD -> 9
    tRP -> 9
    tRAS -> 24


    Thanks for this info, i am going to try it out and see what happens. BTW would you prefer just to use the same memory across the board instead of mixing? if so would these settings still apply?
  21. Personally, I never mix densities, IC's, or any mix, but if after the configurations above and works next is to create a bootable CD/DVD of Memtest86+ (ISO/zip file). Run for at least 4 passes or tonight overnight. Memtest -> http://www.memtest.org/ then you'll know. ;)
  22. jaquith said:
    Personally, I never mix densities, IC's, or any mix, but if after the configurations above and works next is to create a bootable CD/DVD of Memtest86+ (ISO/zip file). Run for at least 4 passes or tonight overnight. Memtest -> http://www.memtest.org/ then you'll know. ;)


    I can get another 12GB kit for under 80.00 for the same brand and speed that i just purchased. If i elect do that it should work without any issues?

    i might end up doing that so would i need to make any changed in the bios for that configuration?
  23. I also always set the RAM manually in the BIOS, I don't give it a second thought.

    Is the RAM working properly after the changes?
  24. jaquith said:
    I also always set the RAM manually in the BIOS, I don't give it a second thought.

    Is the RAM working properly after the changes?


    Actually not yet, i am going to head to frys today and get another 12GB kit so everything will match up with same speed and size per dim. Seems like a better idea since ram is so cheap these days.
  25. I hear you... Keep in mind (2) Matching Kits --- is still 'mixing' the RAM; do not use XMP. If you go to e.g. NewEgg and compare kits 3x4GB and 6x4GB you'll notice some missing CAS timings; it's no accident --- the CPU's IMC can only handle certain Frequency + CAS + Densities.

    Fortunatly, DDR3-1333 is EASY @ CAS 9 24GB, but DDR3-1333 is much HARDER @ CAS 7 24GB.
  26. jaquith said:
    I hear you... Keep in mind (2) Matching Kits --- is still 'mixing' the RAM; do not use XMP. If you go to e.g. NewEgg and compare kits 3x4GB and 6x4GB you'll notice some missing CAS timings; it's no accident --- the CPU's IMC can only handle certain Frequency + CAS + Densities.

    Fortunatly, DDR3-1333 is EASY @ CAS 9 24GB, but DDR3-1333 is much HARDER @ CAS 7 24GB.


    So the only to avoid mixing kits its best to buy a kit with the desired size so if i want 24 gb kit its just best buying one 24GB kit?
  27. On DDR3-1333 it's nothing to worry about, the BIOS in particular XMP won't be my recommendation for (3x4GB) + (3x4GB). Yes, there's a reason for fully matched sets but generally for >DDR3-1600 where, as mentioned, a fully matched and Rated 'single' set is the best idea.

    IMO your problem was 1.65v vs the default 1.50v, and more than likely if you do what I posted and the sets are what you said they are it 'should' work. Unless you're Rendering, huge database or RAM Drive 12GB is fine. I do the later of the two and 'get' the reasons for a lot of RAM. You could also has a bad stick or worst bad DIMM slot(s) which is why I recommended the BIOS changes and running Memtest before spending time + money.

    I OC RAM (a lot) higher than its Rated specs all of the time, and clearly I achieve 'faster' performance on (1) stick per channel and when I load up all the DIMM slots yep both CAS and Frequency are affected; generally one or the other.
  28. jaquith said:
    On DDR3-1333 it's nothing to worry about, the BIOS in particular XMP won't be my recommendation for (3x4GB) + (3x4GB). Yes, there's a reason for fully matched sets but generally for >DDR3-1600 where, as mentioned, a fully matched and Rated 'single' set is the best idea.

    IMO your problem was 1.65v vs the default 1.50v, and more than likely if you do what I posted and the sets are what you said they are it 'should' work. Unless you're Rendering, huge database or RAM Drive 12GB is fine. I do the later of the two and 'get' the reasons for a lot of RAM. You could also has a bad stick or worst bad DIMM slot(s) which is why I recommended the BIOS changes and running Memtest before spending time + money.

    I OC RAM (a lot) higher than its Rated specs all of the time, and clearly I achieve 'faster' performance on (1) stick per channel and when I load up all the DIMM slots yep both CAS and Frequency are affected; generally one or the other.


    Makes sense too me, I do want more ram than i have now so maybe ill just opt for a single kit with at least 18 or so like i wanted in the first place. I rather use one single kit and then tweak the settings and not have to worry about compatibility and so forth. Thanks so much for all your help too.
Ask a new question

Read More

Memory BIOS Product