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  1. #1
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    OC'ing DreamCatcher v3.0's 7750BE

    02/11/09 - 02/15/09

    Going to try and get some kind of organization to my Overclocking DreamCatcher v3.0 “variant”. Why “variant” you ask??? Quite simple I can’t get the M3A78-CM / 7750BE / g. skill F2-pc8500CL5D-2GBPK to play nice. After the quick and easy Overclocking of the Brisbane 4000+ / OCZ PC-6400, it became much frustration and “gnashing of teeth” trying to get the threesome to boot much less overclock! M3A78-CM or 7750BE…. & 7750BE or M3A78-CM..... explains some of it.

    As it turns out I was able to do a “stable” 3.024GHz with the –CM / Brisbane 4000+ / OCZ……



    After f*#ting around and rma’ing one 7750BE back to the egg (that’s going to cost me a restocking fee!) thinking I had a bad cpu (refer to the above links for the gory details) finally managed to set up the –CM / 7750BE / OCZ PC-6400.

    I experimented with different multiplier / FSB combos but they pretty much bork around the same GHz. The best SPi 8M runs I had were 3.23GHz @ 677-T2, 1.50v vcore & 2.1v vdmm and 3.264GHz @ 553-T2, 1.5v vcore & 2.1v vdmm.



    However prime wouldn’t even start at either of those settings, so it has been my shotgun approach again to over clocking. Add to the fact I’ve gotten lazy I’ve downloaded pics instead of taking the time to type stuff out. Right now it appears the best I can do with Prime is x15.5 @ 200 for 3.1Ghz with 1.5v vcore / 2.1v vdmm and the mem set to 800 – T2 (not a hell of a lot better than the Brisbane except mem speed). Currently having that running Prime as I had this setting but at 677 – T2 run for a little over an hour before I stopped it.



    Take a look and see if there is something I could / should change to get “a little higher” GHz. BTW 1.5v is the max vcore with this mobo. I have four cpu voltage settings Auto, +50mv, +100mv, and +150mv where as memory voltages a type in values of 1.85000v to 2.24375v.

    Why F@H?? Click me!
    As of 07/28/11
    Oz1a v2.0 >> XFX MDA72P7509 750a, PI X2 8870BE, 2 x XFX GTS250, WD 250GB, F2-8500CL5D-2GBPK, Tt TR2 600W, XP Pro SP3

  2. #2
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    Re: OC'ing DreamCatcher v3.0's 7750BE

    02/18/09 - Present

    Sadly it seems even with a “formal” oc’ing thread I’m still doing the shotgun thing!! I have played heavily with multi’s as it is nice not to have to just adjust mem and fsb. However one thing is very apparent…..my lower expectation of 3.2GHz is not meant to be with this mobo/memory/proc combo. I have “adjusted” the fsb/multi ratio almost every way I can to get that .xxx variation in hopes it’ll be the one. Below are some of the screen shots from my “work” and not in any particular order.

    They range from “stable” – 6 hours of OCCT or 8+ hours of Prime to a smattering of 1, 4, 8M runs of SPi just for S&Gs and to say I got it “there”.

    A couple of general “observations” have also been made while “trying to find the magic combination”.
    1) Most of the time it seems going from 1.45v to 1.50v doesn’t have a major impact, however I’ll more than likely stay with 1.50v. I really think some of the walls I’m hitting are vcore.
    2) The F2-6400PHU2-2GBHK, for the most part, prefers to run the factory 4-4-4-12 wither at 800 or 677. Also I’m not sure if there is any advantage of ganged or unganged with except of some of the S&G SPi runs. Not sure the memory has been part of the limitations.

    These are some of the early attempts



    and here is a Prime run I have not been able to duplicate. I manually stopped it to try something else….



    The biggest difference between these and those above is
    1.) GPU oc’ed from 500 to 525 (whoopee, thought the onboard gpu was causing some of the “hangs” after booting).
    2.) Proc – NB Voltage + .50mv
    3.) Chipset over volted +.50mv
    4.) Memory is unganged



    The last one is the longest run of prime before crash for anything above 3.19GHz. Currently I’m 5 hours into a Prime run at 13.5 x 236 (3.187GHz) 1.5v / 2.1V 677-4-4-4-12-2T. If this one “survives” it’ll be “IT”.

    Listed below is what I have available so if you see anything that may make a difference let me know!

    Bios Setup Utility

    Configure System Freq / Volts
    CPU Over clocking = 236
    GPU Overclocking = 525
    PCIE Overclocking = Auto

    CPU Ratio & Voltage
    Proc Freq Multi = 13.5
    Proc Voltage = [Auto] [+50mV] [+100mV] [+150mV]
    Proc – NB Voltage = [Auto] [+50mV] [+100mV] [+150mV]

    Hyper X-port Config
    Hyper X-port Speed = 18
    Hyper X-port Width = [Auto] [4 Bit] [8 Bit] [16 Bit]

    Memory Timing & Voltage
    Memory Clock Mode = [Auto] [Manual]
    Memory Clock Freq = [Auto] [200] [266] [333] [400]
    DRAM Timing Mode = [Auto] [DCT1] [DCT2] [Both]
    CAS = 4
    TRCD = 4
    TRP = 4
    tRTP = [Auto] [2-4 CLK] [4-6 CLK]
    TRAS = 12
    TRC = Auto
    tWR = 6
    TRRD = 4
    tWTR = Auto
    tRFC0 = 127.5ms
    tRFC1 = 127.5ms
    tRFC2 = 127.5ms
    tRFC3 = 127.5ms
    Memory OverVoltage = 2.1v

    Chipset Voltage
    Chipset OverVoltage = [Auto] [+50mV] [+100mV] [+150mV]

    Why F@H?? Click me!
    As of 07/28/11
    Oz1a v2.0 >> XFX MDA72P7509 750a, PI X2 8870BE, 2 x XFX GTS250, WD 250GB, F2-8500CL5D-2GBPK, Tt TR2 600W, XP Pro SP3

  3. #3
    Joined
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    Re: OC'ing DreamCatcher v3.0's 7750BE

    02/22/09

    Well the Prime run at 13.5 x 236 (3.187GHz) 1.5v / 2.1V 677-4-4-4-12-2T lasted 10 hours before I stopped it.



    One thing though I put one of the temp probes on the tech station “in” one of the heat sinks on the mosfets and it was running close to 60C. Decided to see if a 15 x 205 with 1.45v would work along with the memory divider set to 400. That lasted 5 hours before core two (worker 2) crapped out. So now trying the 13.5 x 236 (3.187GHz) 677-4-4-4-12-2T at 1.45v and so far it has lasted 2 hours 45. Also have reset the Proc – NB Voltage and Chipset Voltage back to Auto.

    Why F@H?? Click me!
    As of 07/28/11
    Oz1a v2.0 >> XFX MDA72P7509 750a, PI X2 8870BE, 2 x XFX GTS250, WD 250GB, F2-8500CL5D-2GBPK, Tt TR2 600W, XP Pro SP3

  4. #4
    Joined
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    Re: OC'ing DreamCatcher v3.0's 7750BE

    While muddling through the bios in hopes of finding the "magic button" that would allow me to run the PC2-8500 memory I found this screen......



    Not memory but video, is this gpu voltages as in "add volts to overclock" type of voltages????

    Why F@H?? Click me!
    As of 07/28/11
    Oz1a v2.0 >> XFX MDA72P7509 750a, PI X2 8870BE, 2 x XFX GTS250, WD 250GB, F2-8500CL5D-2GBPK, Tt TR2 600W, XP Pro SP3

  5. #5
    Joined
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    Re: OC'ing DreamCatcher v3.0's 7750BE

    As usual I still can’t keep an organized overclocking record! Much has passed under the bridge since my last entry. The biggest thing is that I acquired a set of Corsair Dominator 1066s to try!



    The Twin2X2048-8500C5DF were picked up with the idea that I would need cooling for the memory once the water cooling was installed. Another thing is I’m now running the mem unganged as seemed to help with the 1066s more than the 800s.

    Anyway I messed around with all kinds of setting expecting wonderful and marvelous things……man what a crash and burn! However after going back to basics and remembering I had two sets of mem timings to set I finally managed to break the 3.2GHz barrier I had with the PC2-6400s. In the S&Gs department I was able to boot once at 13.5 x 248 and do a 1M run of SPi, but it locked up when I tried to use Paint to do the screen shot. Then I was never able to get the system to boot up at that speed again. Found that rather interesting as I tried upping the vcore to 1.5v (max on this board) because the sucessful the 8M run of SPi @ 13.5 x 247 used 1.45v.

    Anyway here is my best “bootable” setting………… 13.5 x 247 for 3.3336GHz

    Now for the “for real” part…….. which is 13.5 x 239 for 3.228GHz

    Interestingly enough cpu-z is picking up the 1066s as 800s.

    So here will be my “final” stable settings unless my RMA’ed G. Skill does different! BTW this was declared stable after stopping a Prime run at 13+ hours.

    Bios Setup Utility

    Configure System Freq / Volts
    CPU Over clocking = 239
    GPU Overclocking = Auto
    PCIE Overclocking = Auto

    CPU Ratio & Voltage
    Proc Freq Multi = 13.5
    Proc Voltage = [Auto] [+50mV] [+100mV] [+150mV]
    Proc – NB Voltage = [Auto] [+50mV] [+100mV] [+150mV]

    Hyper X-port Config
    Hyper X-port Speed = 18
    Hyper X-port Width = [Auto] [4 Bit] [8 Bit] [16 Bit]

    Memory Timing & Voltage
    Memory Clock Mode = [Auto] [Manual]
    Memory Clock Freq = [Auto] [200] [266] [333] [400] [533]
    DRAM Timing Mode = [Auto] [DCT1] [DCT2] [Both]
    CAS = 5
    TRCD = 5
    TRP = 5
    tRTP = [Auto] [2-4 CLK] [4-6 CLK]
    TRAS = 15
    TRC = 25
    tWR = 6
    TRRD = 5
    tWTR = 3
    tRFC0 = 127.5ms
    tRFC1 = 127.5ms
    tRFC2 = 127.5ms
    tRFC3 = 127.5ms

    CAS = 5
    TRCD = 5
    TRP = 5
    tRTP = [Auto] [2-4 CLK] [4-6 CLK]
    TRAS = 15
    TRC = 25
    tWR = 6
    TRRD = 5
    tWTR = 3
    tRFC0 = 127.5ms
    tRFC1 = 127.5ms
    tRFC2 = 127.5ms
    tRFC3 = 127.5ms

    Memory OverVoltage = 2.1v

    Chipset Voltage
    Chipset OverVoltage = [Auto] [+50mV] [+100mV] [+150mV]

    If you see anything that might be "tweeked" somemore let me know! However as this is on an open tech station and will be moving into a water cooled mATX case............
    Last edited by jedihobbit; 04-15-2009 at 01:24 AM.

    Why F@H?? Click me!
    As of 07/28/11
    Oz1a v2.0 >> XFX MDA72P7509 750a, PI X2 8870BE, 2 x XFX GTS250, WD 250GB, F2-8500CL5D-2GBPK, Tt TR2 600W, XP Pro SP3

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