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ram timing (again)

Discussion in 'Memory' started by littlekates, 3 Feb 2006.

  1. littlekates


    Joined: 22 Nov 2005

    Posts: 130

    can someone tell me whats wrong with this timing. i seem to get very bad superPI result, 1M = 36s. pc currently overclocked to 2530mhz (253x10).

    CAS letancy(tcl) = 2.5
    Row Cycle Time(trc) = 13
    Row Refresh Cycle(trfc) = 14
    RAS to CAS delay(trcd) = 3
    RAS to RAS delay(trrd) = 2
    Min RAS active time(tras) = 5
    Row Precharge Time(trp) = 3
    Write Recovery Time(twr) = 3
    Write to Read Delay Time(twtr) = 2
    Read To Write Delay Time(trtw) = 4
    refresh Rate (tref) = 166mhz

    memory is 1GB(2x512) PC3200 Geil value ram.
  2. man_from_uncle

    Wise Guy

    Joined: 9 Jan 2006

    Posts: 1,345

    Is that with a 1:1 ratio or a 6:5 divider? If it's 1:1 you look to be a bit off the pace for a venice core (should be 32-34 by my reckoning). If you are using the divider then that's only just on the high side of what i'd expect. Not sure how the older cores do at 2.5 ghz, but i imagine they are a tad slower.

    Do you have any other ram options to get to your max overclock with that Geil? (Can you raise the frequency by going to CAS3 for example)
  3. littlekates


    Joined: 22 Nov 2005

    Posts: 130

    its 6:5 me think as i use 166 divider. this is SPD timing table

    freq 166Mhz:
    CAS latency = 2.0
    RAS to CAS = 3
    RAS precharge = 3
    Tras = 5

    Freq 200Mhz:
    CAS latency = 2.5
    RAS to CAS = 3
    RAS precharge = 3
    TRas = 6
  4. mc_bob


    Joined: 29 Aug 2005

    Posts: 1,553

    Location: Reppin' up North London

    That's the same result I get, Spec in sig. Our machines our similiar after Overclocks.
    I do think it should be slightly quicker however.