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Thread: RAM for GA-EP45-UD3R with Q9550




  1. #1
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    Smile RAM for GA-EP45-UD3R with Q9550

    Please help to select reliable 4 GB of RAM for my mobo GA-EP45-UD3R with Q9550 to run FSB at 1600.

  2. #2
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: RAM for GA-EP45-UD3R with Q9550

    What amount would you like to spend? Do you have any brand preferences?

    Do you live in the US?

  3. #3
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    Default Re: RAM for GA-EP45-UD3R with Q9550

    Yes, I live in US and plan to spend around a hundred +-.
    I just RMAed a G.SKILL set (2 x 2GB) DDR2 1066 (PC2 8500) F2-8500CL5D-4GBPK, which was working on even slots only, and began to error on 3.2 GHz x1600. Any decent company would be ok. I just need to be able to overclock my system from 2.83x1333 to at least 3.2x1600. Thanks!

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    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: RAM for GA-EP45-UD3R with Q9550

    Well I would suggest one of these kits, they have all worked great for me

    Review Link in my signature $76.99 Plus Shipping
    Newegg.com - Crucial Ballistix 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) Dual Channel Kit Desktop Memory Model BL2KIT25664AA80A - Desktop Memory

    $78.99 (Mid-Range) Review Link in my Signature plus shipping (W/ $10 rebate)
    Newegg.com - mushkin 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) Dual Channel Kit Desktop Memory Model 996587 - Desktop Memory

    $79.99 plus shipping (W/ $10 rebate) I use this as well on my DDR2 Setups, just never wrote a review. Very nice kit and I suggest this very often and use them myself in a few builds
    Newegg.com - mushkin 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) Dual Channel Kit Desktop Memory Model 996580 - Desktop Memory

    Any of these would be great as well


    Same as above 996580 only with eVCI Heatsinks
    Newegg.com - mushkin XP ASCENT w/ eVCI technology 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) Dual Channel Kit Desktop Memory - Desktop Memory

    1066Mhz
    Newegg.com - mushkin 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 1066 (PC2 8500) Dual Channel Kit Desktop Memory Model 996599 - Desktop Memory
    Newegg.com - mushkin XP ASCENT w/ eVCI technology 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 1066 (PC2 8500) Dual Channel Kit Desktop Memory - Desktop Memory

    Redlines (1000Mhz)
    Newegg.com - mushkin 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 1000 (PC2 8000) Dual Channel Kit Desktop Memory Model 996593 - Desktop Memory
    Newegg.com - mushkin XP 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 1000 (PC2 8000) Dual Channel Kit Desktop Memory Model 996623 - Desktop Memory


    Of course if you would like other suggestions let me know, those are just the brands I use and like, and know they work. Sorry to hear about your G.Skills, they normally do well too, but I guess every brand has it's RMA times.

    Hey, did you ever test other memory in your odd slots, some boards the odd slots are faulty I think as I see this reported often.
    Last edited by Lsdmeasap; 10-15-2009 at 01:02 PM.

  5. #5
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    Default Re: RAM for GA-EP45-UD3R with Q9550

    You were right about possible bad slot in the MB - #3 produces errors on my new RAM also. I just installed mushkin 4GB (2 x 2GB) 240-Pin DDR2 1066 (from your list) - it works fine at 1600 under stress in slots 2,4, (unlike G.SKILL). Now I need to decide to go for the headache of replacing my MB with one faulty RAM slot, or leaving it...

  6. #6
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    Default Re: RAM for GA-EP45-UD3R with Q9550

    You seem to be quoting the quad pumped speed of your FSB rather than your RAM speed. 1600 is your QP FSB, ie 4*400. Your RAM speed is a combination of the FSB's single data rate, multiplied by which ever RAM multiplier you select.

    For DDR-1066, you must select the correct multiplier for your current FSB to give you the right speed. 400*2.66 is the correct setting. Also note that ACTUAL clock speed for DDR RAM of any kind (DDR1, DDR2 and DDR3) is half the quoted DDR rate. so DDR-1066 RAM is running at a raw clock speed of 533MHz. This is why I don't refer to any DDR figure as being in MHz, because really, it's not, it's just a performance equiv. value, similar to how AMD used to rate their CPU's.

    It limits confusion if you talk about FSB as it's actual MHz value.

    It's really up to you about RMAing the board. If slots 2 and 4 work completely stable and you will never want to fill the other two slots then you could keep it. If it were me I'd get it replaced.
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