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Problems Upgrading RAM

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  • Problems Upgrading RAM

    Hello.

    I posted a similar post at DFI and tomshardware.com. DFI said it wouldn't work, toms hardware said it was a voltage issue, yet no responses.

    I have an issue with RAM / timing etc (maybe voltage) not sure.

    I have the following four sticks of RAM:

    2 modules:

    RAM Specifications: DDR2-800/PC2-6400 / 2GB x 2 / CL6-6-6-18 1.8v-1.9v
    Part Number: F2-6400CL6S-4GBMQ (GSkill)

    2 modules:

    RAM Specifications: DDR2-800/PC2-6400 / 2GB x 2 / CL5-5-5-15 1.8v-1.9v
    Part Number: F2-6400CL5D-4GBPQ (Gskill)

    Question 1: I'm trying to run 8 gb in my system (specifications below), currently I am using F2-6400CL6S-4GBMQ and when adding the F2-6400CL5D-4GBPQ, my system will not post, should I just give up on mixing and matching the different timing RAM?

    Question 2: If this should work, should I leave settings at auto and just adjust voltage? What should I do to get this to work then? Should I force timings? Should I force voltage, I have tried both and neither seem to work.

    Question 3: If system posts and boots up, I can only assume that the RAM is fine ... would that be valid? (I have been able to post the system and boot into Vista with each set of RAM modules - to verify if RAM is bad or not)

    Thanks for your help!

    -slipmat

    System Specs:
    LanParty X48-2TRS - Latest BiOS.
    Q9550 - Intel Quad Core
    G-Skill (2 x 2 GB) F2-6400CL6D-4GBMQ (Currently being used)
    G-Skill (2 x 2 GB) F2-6400CL5D-4GBPQ (Not in system)
    Rosewill RX950-S-B - 950 Watt PSU.
    Thermaltake Powerexpress 650W VGA PSU
    Sapphire HD 4870 X2
    WD Velociraptor 300 GB SATA 3.0/GB
    Seagate Barracuda - 500 GB SATA 3.0/GB
    ASUS 20X DVD+/-R etc etc
    Onboard sound
    Onboard Nic/Lan
    USB - Keyboard and mouse
    OS - Vista Ultimate 64

  • #2
    sorry, but we didn't test them together
    they may have compatible issue
    and their spec are different, even they could run together, they would run at the spec of MQ(CL6), not PQ(CL5)
    we'd recommend you to use them for different machine to avoid matching problems
    thanks


    G.S

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