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Thread: will pc6400 RAM allow me to get 4G on 9550




  1. #1
    Join Date
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    Default will pc6400 RAM allow me to get 4G on 9550

    I just ordered an upgrade to my existing system, the new system include EP45 UD3P and Q9550 and plan to OC it to over 4Ghz (which sound like a safe thing to do), now I wonder do I still need to buy new RAM, my current RAM is G.Skill 2x1GB pc6400 (F2-6400PHU2-2GBHZ), search from this forum seems most members get 4Ghz with things like ddr2-1000 or higher, so I am not sure my current RAM is up for the challenge, thought?

    Thanks.

  2. #2
    Join Date
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    Default Re: will pc6400 RAM allow me to get 4G on 9550

    Quote Originally Posted by twinkiestar View Post
    I just ordered an upgrade to my existing system, the new system include EP45 UD3P and Q9550 and plan to OC it to over 4Ghz (which sound like a safe thing to do), now I wonder do I still need to buy new RAM, my current RAM is G.Skill 2x1GB pc6400 (F2-6400PHU2-2GBHZ), search from this forum seems most members get 4Ghz with things like ddr2-1000 or higher, so I am not sure my current RAM is up for the challenge, thought?

    Thanks.
    From what i gather the 45nm Quad Cores don't overclock aswell as the Dual Cores, so you might not reach 4Ghz will your particular setup.

    It is very possible that your DDR2-800 will overclock and the most likely minimum Memory multiplier you'll have available will be 2.00x.

    So for example, if your Cpu has a 9x multiplier:-

    a) You set the Cpu host frequency to 400Mhz x 9 (cpu multiplier) = 3.60GHz overclock & Ram @ 400Mhz x 2.00 = 800Mhz ie Pc2-6400.

    b) You set the Cpu host frequency to 450Mhz x 9 (cpu multiplier) = 4.05Ghz overclock & Ram @ 450Mhz x 2.00 = 900Mhz , which your Ram might run at, possibly with looser timings etc.
    GA-P35C-DS3R Rev2.0 F11 bios, E8200 (@3.0Ghz), OCZ DDR3 PC3-10666 Reaper 4GB (@1200Mhz), Xonar D1, 8800GTS 512, Corsair HX520 (Single 12volt line, Max 40A), WDC 3200aaks/5000aaks in AHCI mode, Vista 64 Premium.

  3. #3
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: will pc6400 RAM allow me to get 4G on 9550

    Yeap, as said above you will likly be fine aside from if you can get 4Ghz or not, your ram will be fine at higher speeds usually just with looser timings.

    And as you can see here it will do just fine >>>
    F2-6400PHU2-2GBHZ Test result - XtremeSystems Forums

    Techgage - G. Skill 2GB F2-6400PHU2-2GBHZ

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