Less USable Memory 64 bit Win7 Ultimate

I build a new system.

I am using 64 bit Win 7 Ultimate, Asus Sabertooth 55i, i5 Intel, and 2*2Gig G.Skill RipJaws (7-7-7-21 with 1.5V).

but when I do my computer property I can see 4 gig (2 gig usable). I can see only 2 gig in ASUS provided utility.

I already did msconfig, boot, advance setting, max memory to 4096.

but it is still not showing up 4 gig usable.

my intel is overclock to 3.5GHz.

can anybody help me out ??
8 answers Last reply
More about less usable memory win7 ultimate
  1. Q - What BIOS version?
    Q - What i5 CPU?
    Q - Is the DRAM LED on the MOBO 'on'?
    Q - Is the OV_DRAM toggle in the Default position? {RED position = BAD}
    Q - Have you tried the MEM_OK button?

    Verify and set as below:


    Post the following info:
    H/W Reserved
    Available
    Cached
    Installed


    Slots: | A2 | A1 | B2 | B1 | - use A1 & B1


    Assuming F3-10666CL7D-4GBRH 1333 7-7-7-21-2N @ 1.5v http://www.gskill.com/products.php?index=223

    BIOS:
    AI Overclock Tuner -> Auto
    DRAM Frequency -> DDR3-1333
    CAS -> 7
    RAS -> 7
    RAS PRE -> 7
    RAS ACT -> 21
    --
    DRAM Timing Mode -> 2N
    IMC Voltage -> Auto ; failure 1.1~1.16v ; failure 1.2v
    DRAM Voltage -> 1.50~1.55v
  2. jaquith said:
    Q - What BIOS version?
    Q - What i5 CPU?
    Q - Is the DRAM LED on the MOBO 'on'?
    Q - Is the OV_DRAM toggle in the Default position? {RED position = BAD}
    Q - Have you tried the MEM_OK button?

    Verify and set as below:
    http://i1013.photobucket.com/albums/af254/Jaquith/Boot_OPT.gif

    Post the following info:
    H/W Reserved
    Available
    Cached
    Installed
    http://i1013.photobucket.com/albums/af254/Jaquith/RM_7PRO6GB.gif

    Slots: | A2 | A1 | B2 | B1 | - use A1 & B1
    http://i1013.photobucket.com/albums/af254/Jaquith/P55_Dual_Channel.jpg

    Assuming F3-10666CL7D-4GBRH 1333 7-7-7-21-2N @ 1.5v http://www.gskill.com/products.php?index=223

    BIOS:
    AI Overclock Tuner -> Auto
    DRAM Frequency -> DDR3-1333
    CAS -> 7
    RAS -> 7
    RAS PRE -> 7
    RAS ACT -> 21
    --
    DRAM Timing Mode -> 2N
    IMC Voltage -> Auto ; failure 1.1~1.16v ; failure 1.2v
    DRAM Voltage -> 1.50~1.55v



    Thanks for Quick Reply

    Don't have all the answer and Will get back to you ASAP.
    check below for some answers

    BIOS Version: Need to Check (there is 17 somewhere)
    Q - What i5 CPU? Intel i5 750 2.66 GHz LGA 1156 Lynfield ( overclock at 3.6)
    Q - Is the DRAM LED on the MOBO 'on'? Need to check
    Q - Is the OV_DRAM toggle in the Default position? {RED position = BAD} Need to check
    Q - Have you tried the MEM_OK button? NO

    Memory installed in A1 and B1

    AI Overclock Tuner set to Manual
    DRAM Frequency -> DDR3-1333
    CAS -> 7
    RAS -> 7
    RAS PRE -> 7
    RAS ACT -> 21
  3. Add:
    --
    DRAM Timing Mode -> 2N
    IMC Voltage -> Auto ; failure 1.1~1.16v ; failure 1.2v
    DRAM Voltage -> 1.50~1.55v
  4. jaquith said:
    Add:
    --
    DRAM Timing Mode -> 2N
    IMC Voltage -> Auto ; failure 1.1~1.16v ; failure 1.2v
    DRAM Voltage -> 1.50~1.55v


    I have tried all of the above but still problem persist.

    my OV DRAM toggle is in default mode (not in RED)
    my MEM OK Switch is working fine (it lit red when system start)
    I tried MEM OK Switch ( I pressed the switch and hold until DRAM LED was blinking RED)
    I take out the memory and installed again.

    I check the BIOS and they are same as you pointed out.

    Check the link for Resource Monitor.

    http://i1194.photobucket.com/albums/aa380/chitochez/Image2.png

    or
    Following are the details from Resource Monitor

    Installed: 4096
    Total: 2045
    Cache: 1155
    Available: 1095

    I have

    888MB in use
    1093 in Standby
    2051 in Hardware Reserved
    62 Modified
    2MB Free

    Memory in resource monitor.

    I am running win 7 ultimate 64 bit.

    what next ???
  5. If you modified the voltages as above then I would RMA both sticks. Clearly one stick or DIMM is bad to the BIOS; to rule-out DIMM slots install RAM in slots A2 & B2.

    G.SKILL is very good to its customers...

    As a last ditch effort you might want to clean the RAM & DIMM contacts. Moisten the RAM contacts with Isopropyl alcohol, insert wet in DIMM slots, remove and clean, repeat then allow to dry 10 minutes and reinstall RAM.

    Clearly, you can test the RAM with Memtest; create a bootable CD/DVD download {ISO/zip} http://www.memtest.org/ run at least 2 passes.
  6. jaquith said:
    If you modified the voltages as above then I would RMA both sticks. Clearly one stick or DIMM is bad to the BIOS; to rule-out DIMM slots install RAM in slots A2 & B2.

    G.SKILL is very good to its customers...

    As a last ditch effort you might want to clean the RAM & DIMM contacts. Moisten the RAM contacts with Isopropyl alcohol, insert wet in DIMM slots, remove and clean, repeat then allow to dry 10 minutes and reinstall RAM.

    Clearly, you can test the RAM with Memtest; create a bootable CD/DVD download {ISO/zip} http://www.memtest.org/ run at least 2 passes.



    Thanks for your quick response

    I ordered all the part on 10/26 from NEWEGG. so, is it possible that they will take part back.

    can you tell me how to approach them

    Thanks
  7. Typically Newegg is good for 30 days, and afterwards G.SKILL {OEM}. Therefore, you certainly can try Newegg and see what they say... Assuming, 'no' then contact G.SKILL -> http://gskill.com/rma.php

    Further, G.SKILL has their own forum and help -> http://www.gskill.us/forum/

    It's an aggravation, but they are pretty fast to exchange. I assume the RAM failed the Memtest?!
  8. Thanks

    Did not try the MEMTEST yet.

    will let you know once done
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