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    L502x memory upgrade advise

    Discussion in 'Dell XPS and Studio XPS' started by skullpnuk, Apr 12, 2012.

  1. skullpnuk

    skullpnuk Notebook Enthusiast

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    I'm just wondering, is the L502X compatible with PC3-12800 rams or just PC3-10600? Thanks in advance
     
    skullpnuk, Apr 12, 2012
    #1
  2. ximinez

    ximinez Notebook Consultant

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    Mine has 16GB @1600MHz :)
     
    ximinez, Apr 12, 2012
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  3. Kaso

    Kaso Notebook Virtuoso

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    Which L502X? If your L502X configuration has an i7 QM, the answer is yes.

    Does the RAM actually operate at 1600MHz?
     
    Kaso, Apr 12, 2012
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  4. skullpnuk

    skullpnuk Notebook Enthusiast

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    WHOA! THAT'S CRAZY! how'd you manage to put 16GB when the max is 8GB?
     
    skullpnuk, Apr 12, 2012
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  5. skullpnuk

    skullpnuk Notebook Enthusiast

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    Alright thanks and mine is a i7-2630QM so i guess it'll work! Thanks!
     
    skullpnuk, Apr 12, 2012
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  6. ximinez

    ximinez Notebook Consultant

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    Yes.
    [​IMG]
    2x8GB SO-DIMMs. Dell doesn't say that 8GB is maximum. They just don't support the configuration.
     
    ximinez, Apr 12, 2012
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  7. Sam_A_1992

    Sam_A_1992 Notebook Evangelist

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    Ive heard that dram frequency isnt actually the real time frequency of the ram, so it might not actually be running at 1600 even though it says it is. I have tried this with desktops in the past on mobo's with max limits of 1333mhz but cpu id, still said it was running at 1600 when it is litterally impossible to do on that mobo. So that might not be accurate.
     
    Sam_A_1992, Apr 12, 2012
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  8. skullpnuk

    skullpnuk Notebook Enthusiast

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    That's just sickkkkk man!
     
    skullpnuk, Apr 12, 2012
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  9. ximinez

    ximinez Notebook Consultant

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    Perhaps. But the BIOS says the speed is 1600MHz, and WEI increased to 7.8 as well.
     
    ximinez, Apr 12, 2012
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  10. Kaso

    Kaso Notebook Virtuoso

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    That's just a report on the characteristics of the device itself.

    (Similarly, on a system that supports only SATA 3.0Gb/s, a SATA 6.0Gb/s SSD is reported as such, but does not operate at that speed.)
     
    Kaso, Apr 12, 2012
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  11. ximinez

    ximinez Notebook Consultant

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    If I had spent the extra cash for the last CPU upgrade, I could with reasonable certainty claim that I had one of the fastest l502x in the world :p
    (But the i7-2860QM cost an extra USD717!)
     
    ximinez, Apr 12, 2012
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  12. Kaso

    Kaso Notebook Virtuoso

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    Going from 8GB to 16GB does have a positive influence on RAM WEI.
     
    Kaso, Apr 12, 2012
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  13. ximinez

    ximinez Notebook Consultant

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    Yes. But I tested with 2x8GB before I bought the 1600MHz ones. The WEI increased when I upgraded from 1333 to 1600...
     
    ximinez, Apr 12, 2012
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  14. kgh00007

    kgh00007 Notebook Evangelist

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    Kaso take your negative vibes elsewhere, it's well documented that the L502X as well as other SB notebooks can run RAM @1600Mhz, just google it!
     
    kgh00007, Apr 13, 2012
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  15. jiannichan

    jiannichan Notebook Guru

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    I'd like to actually see real benchmarks of DDR3 1600, 1866, 2133 memory compared with 1333MHz on our system. I want to see what kinds of gains there actually are, especially since going from 16GB of 1333 to 16GB of 1600 is roughly $50 difference.
     
    jiannichan, Apr 13, 2012
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  16. wendiko

    wendiko Notebook Enthusiast

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    Does the l502X i5 works with 16gb too?
     
    wendiko, Apr 13, 2012
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  17. 1chaoticadult

    1chaoticadult Notebook Consultant

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    @wendiko

    Yes it does.
     
    1chaoticadult, Apr 13, 2012
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  18. Kaso

    Kaso Notebook Virtuoso

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    Saying "the L502X" doesn't mean much! What are "other SB notebooks"? Generic statements like these do not help.

    To support 1600MHz RAM, an L502X must have an i7 QM processor. Dual-core i7 M and i5 M only support DDR3-1066/1333.

    Google this yourself: Compare Intel® Products.

    [​IMG]
     
    Kaso, Apr 14, 2012
    #18
  19. Sam_A_1992

    Sam_A_1992 Notebook Evangelist

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    My l702x is locked in the bios to 1333mhz. I think dell like their xps 15 users more than their xps 17 users.

    Btw you need win 7 pro or ultimate for it to recognise more than 16gb of ram.
     
    Sam_A_1992, Apr 14, 2012
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  20. Padjr

    Padjr Newbie

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    Here is what you may want to consider:

    Kingston HyperX 8GB (2 x 4GB) 204-Pin DDR3 SO-DIMM DDR3 1866 HyperX Plug n Play Laptop Memory Model KHX1866C11S3P1K2/8G

    I installed in my L502X with the Ccre I7 2620M, it runs at 1863 mhz with no issues.
     
    Padjr, Apr 14, 2012
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  21. NeoMesal

    NeoMesal Notebook Consultant

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    It has to be a BIOS reporting issue, AFAIK no mobile Sandy Bridge CPU is supported to run 1866 mhz RAM.

    And for 1666 mhz it requires > 2710QE CPU.

    Sandy Bridge - Wikipedia, the free encyclopedia
     
    NeoMesal, Apr 14, 2012
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  22. Sam_A_1992

    Sam_A_1992 Notebook Evangelist

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    Yes whatever your pc is telling you, it is not running at 1800mhz.
     
    Sam_A_1992, Apr 15, 2012
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  23. Padjr

    Padjr Newbie

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    It could be a bios isue, however the laptop runs significantly faster with this memory, I used AIDA64 to meaure the Speed as well as the BIOS itself.
     
    Padjr, Apr 15, 2012
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  24. ximinez

    ximinez Notebook Consultant

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    What was the result of the AIDA64 test?
     
    ximinez, Apr 15, 2012
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  25. Padjr

    Padjr Newbie

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    Attached are the results of the memory bench mark
     

    Attached Files:

    Padjr, Apr 17, 2012
    #25