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  1. #1
    DrJack55's Avatar
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    Finally broke through a roadblock on my AMD 955

    I've been stuck at 3.6 on my 955. 3.7 would work for a bit at a good temp, but after a while, usually within a day the system would crash. After evaluating my system and power requirements, I realized that not only was I maxing out my power 550 watt power supply, my power supply was also a piece of s**t because it was a Rosewill 550 watt (read 350 watt) power supply. I picked up a 750tx Corsair and lo and behold, I'm now passing my stability tests and not crashing. Hell, even Dragon Age Origins which I've just been playing hasn't been randomly crapping out on me. (I got really good with that F5 key)

    So yeah, onward and upwards now!
    Corsair TX750 Power Supply
    Cooler Master HAF 922
    3x 200mm Cooler Master Fans
    Asus Crosshair III Formula
    AMD Phenom II 955BE
    (3.6 ghz, 1.350v, NB 1.25v @ 2400 MHZ, 52c)
    Scythe Mugen 2 w/ 2 120mm fans
    4gb Corsair DDR3
    Diamond ATI Radeon 5750
    22" HP w2207h @1680x1050

  2. #2
    Member soulwatch5's Avatar
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    Jun 2010
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    Burbank, CA
    Ya i had a similar problem with my topower psu until i upgraded. At the time my 4870x2 ate that thing alive.
    Haf 922
    Asrock z77 extreme6
    i7 3770k @4.5ghz
    8g Gskill @1600Mhz
    Intel 520 SSD
    EVGA GTX 680
    Corsair HX1000

    Heatware

  3. #3
    Senior Member trents's Avatar
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    Have you given it a good long stress test with Prime95 or OCCT? Or are you saying its stable based solely on running standard apps?
    CPU: i7 2600k@4.6 ghz
    Motherboard: Asus P8P67 Deluxe b3
    Cooler: Swiftech H320
    RAM: 16 (4x4) gb Team Group Vulcan 2400 mhz @ 2176 mhz / 11-13-13-35-2T
    GPU: Sapphire Radeon R9 280X
    Case: NZXT Source 530
    PSU: OCZ 750W
    Storage: Segate 480 gb SSD + 2x300 gb WD Velociraptors


    Jesus said, "I am the way and the truth and the life. No one comes to the Father but through me". John 14:6

  4. #4
    DrJack55's Avatar
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    I run Prime95, I used to do Boinc but when it crashed, sometimes it would corrupt the data packet and I'd lose the time I spent on that project and it wouldn't get accepted.

    I usally run it through the night, if it's alive in the morning, then I know it's good

    Sort of like on Aliens.. take the dropship to the Suloco and nuke the place from orbit, it's the only way to be sure.

    Yeah, like that... LOL
    Corsair TX750 Power Supply
    Cooler Master HAF 922
    3x 200mm Cooler Master Fans
    Asus Crosshair III Formula
    AMD Phenom II 955BE
    (3.6 ghz, 1.350v, NB 1.25v @ 2400 MHZ, 52c)
    Scythe Mugen 2 w/ 2 120mm fans
    4gb Corsair DDR3
    Diamond ATI Radeon 5750
    22" HP w2207h @1680x1050

  5. #5
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    to OCF!


    Yes, it's amazing what a bad PSU can do to your system.
    Quote Originally Posted by DrJack55 View Post
    I run Prime95, I used to do Boinc but when it crashed, sometimes it would corrupt the data packet and I'd lose the time I spent on that project and it wouldn't get accepted.

    I usally run it through the night, if it's alive in the morning, then I know it's good

    Sort of like on Aliens.. take the dropship to the Suloco and nuke the place from orbit, it's the only way to be sure.

    Yeah, like that... LOL
    If you run BOINC that's one of THE best stability tests I know. P95 or OCCT overnight and if that works then start crunching - hopefully 24/7.


    BTW - Which BOINC project do you run? We've got several BOINC teams here at OCF ...

  6. #6
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    Sep 2010
    Hrm, this is interesting. I have a Rosewill 550 also (RP550-2), and it seems I've hit a ceiling on my 955, literally 10mhz difference in clock speed will wreak havok. I've been reading its not really a good PSU to go hogwild with, looks like a new psu is on the horizon

  7. #7
    Testing with OCCT or similar where you can monitor the voltages under load might help determine if there is really a PSU issue.

  8. #8
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    Quote Originally Posted by beenthere View Post
    Testing with OCCT or similar where you can monitor the voltages under load might help determine if there is really a PSU issue.
    will do. have not used yet, only Cinebench so far. thanks.

  9. #9
    DrJack55's Avatar
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    Quote Originally Posted by QuietIce View Post
    to OCF!


    Yes, it's amazing what a bad PSU can do to your system.
    If you run BOINC that's one of THE best stability tests I know. P95 or OCCT overnight and if that works then start crunching - hopefully 24/7.


    BTW - Which BOINC project do you run? We've got several BOINC teams here at OCF ...
    I run SETI and Rosetta. I've already teamed up with you guys a couple of months ago, just never bothered getting around to asking about the badges
    Corsair TX750 Power Supply
    Cooler Master HAF 922
    3x 200mm Cooler Master Fans
    Asus Crosshair III Formula
    AMD Phenom II 955BE
    (3.6 ghz, 1.350v, NB 1.25v @ 2400 MHZ, 52c)
    Scythe Mugen 2 w/ 2 120mm fans
    4gb Corsair DDR3
    Diamond ATI Radeon 5750
    22" HP w2207h @1680x1050

  10. #10
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    CgS Drone's Avatar
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    Looking at your cpu temp in you sig it looks like that is going to be your next roadblock. I'm guessing that is at load?
    C2D E8500, Gigabyte EP45-UD3P-------------955BE, TA890FXE, Cooler Master GX 750
    Cooler Master 212+, Corsair 750TX----------HAF 932, Noctua D-14
    HyperX T1 1066 5-5-5-15 (2x2GB)----------Geil Black Dragon (2x2GB)
    MSI GTX 260, Raptor 75gb.------------------Gigabyte GTX 460, Seagate 500gb

    >>>>>>>HeatWare<<<<<<<

  11. #11
    DrJack55's Avatar
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    Quote Originally Posted by CgS Drone View Post
    Looking at your cpu temp in you sig it looks like that is going to be your next roadblock. I'm guessing that is at load?
    As soon as I go to 3.8 it jumps to 57 and then gets unstable. I don't that's the PS as it's now the Corsair 750 and I'm nowhere near reaching peak on that. 3.7 runs at 55 just about. I can get it sort of stable, but I think I'm missing something as increasing voltage doesn't improve stability.

    True though, I think I might need to get a better air cooler than this Zalman 9700. Either that or go liquid, but I don't know if I can afford to put out that much money for a custom setup.
    Corsair TX750 Power Supply
    Cooler Master HAF 922
    3x 200mm Cooler Master Fans
    Asus Crosshair III Formula
    AMD Phenom II 955BE
    (3.6 ghz, 1.350v, NB 1.25v @ 2400 MHZ, 52c)
    Scythe Mugen 2 w/ 2 120mm fans
    4gb Corsair DDR3
    Diamond ATI Radeon 5750
    22" HP w2207h @1680x1050

  12. #12
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    CgS Drone's Avatar
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    How hard are you planning on pushing the cpu? are you planning on going for 4.0 or stopping at 3.8?

    3.8 on mine was fairly easy and I didn't have much issue with heat, but to get 3.9 and 4.0 I had to start pushing the juice to it and getting a good deal of heat at that point.

    57C, is this at load or at idle?
    C2D E8500, Gigabyte EP45-UD3P-------------955BE, TA890FXE, Cooler Master GX 750
    Cooler Master 212+, Corsair 750TX----------HAF 932, Noctua D-14
    HyperX T1 1066 5-5-5-15 (2x2GB)----------Geil Black Dragon (2x2GB)
    MSI GTX 260, Raptor 75gb.------------------Gigabyte GTX 460, Seagate 500gb

    >>>>>>>HeatWare<<<<<<<

  13. #13
    DrJack55's Avatar
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    Quote Originally Posted by CgS Drone View Post
    How hard are you planning on pushing the cpu? are you planning on going for 4.0 or stopping at 3.8?

    3.8 on mine was fairly easy and I didn't have much issue with heat, but to get 3.9 and 4.0 I had to start pushing the juice to it and getting a good deal of heat at that point.

    57C, is this at load or at idle?
    I'd like to get to 24/7 3.8, with the ability to get to 4.0 for no other reason than to break that psychological barrier.

    Load, all temps I've posted are load, unless otherwise stated. Load after running Prime 95 for about 20-30 minutes.
    Corsair TX750 Power Supply
    Cooler Master HAF 922
    3x 200mm Cooler Master Fans
    Asus Crosshair III Formula
    AMD Phenom II 955BE
    (3.6 ghz, 1.350v, NB 1.25v @ 2400 MHZ, 52c)
    Scythe Mugen 2 w/ 2 120mm fans
    4gb Corsair DDR3
    Diamond ATI Radeon 5750
    22" HP w2207h @1680x1050

  14. #14
    DrJack55's Avatar
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    Oh, been reading Dolk's guide and I think I found my answer for instability if it's not related to temperature. NB Speed and Voltage. It's not at stock, but it's not as high as what is shown on his charts for the 940. I'm only at 2200 and 1.3 respectively.
    Corsair TX750 Power Supply
    Cooler Master HAF 922
    3x 200mm Cooler Master Fans
    Asus Crosshair III Formula
    AMD Phenom II 955BE
    (3.6 ghz, 1.350v, NB 1.25v @ 2400 MHZ, 52c)
    Scythe Mugen 2 w/ 2 120mm fans
    4gb Corsair DDR3
    Diamond ATI Radeon 5750
    22" HP w2207h @1680x1050

  15. #15
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    CgS Drone's Avatar
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    Ya try 2400 and if that doesn't work go for 2600 on CPU-NB. Also you can drop the HT down to 1800 and try to see if that helps if raising the CPU-NB doesn't do it.

    Are you doing the OC strictly on the cpu multiplier? and what about your RAM voltage/timing/freq?
    C2D E8500, Gigabyte EP45-UD3P-------------955BE, TA890FXE, Cooler Master GX 750
    Cooler Master 212+, Corsair 750TX----------HAF 932, Noctua D-14
    HyperX T1 1066 5-5-5-15 (2x2GB)----------Geil Black Dragon (2x2GB)
    MSI GTX 260, Raptor 75gb.------------------Gigabyte GTX 460, Seagate 500gb

    >>>>>>>HeatWare<<<<<<<

  16. #16
    DrJack55's Avatar
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    Quote Originally Posted by CgS Drone View Post
    Ya try 2400 and if that doesn't work go for 2600 on CPU-NB. Also you can drop the HT down to 1800 and try to see if that helps if raising the CPU-NB doesn't do it.

    Are you doing the OC strictly on the cpu multiplier? and what about your RAM voltage/timing/freq?
    CPU multiplier. Any time I try to ef with RAM, the whole OC gets unstable. The timings are set to spec and the freq is at 1333, even though it's 1600 Ram.
    Corsair TX750 Power Supply
    Cooler Master HAF 922
    3x 200mm Cooler Master Fans
    Asus Crosshair III Formula
    AMD Phenom II 955BE
    (3.6 ghz, 1.350v, NB 1.25v @ 2400 MHZ, 52c)
    Scythe Mugen 2 w/ 2 120mm fans
    4gb Corsair DDR3
    Diamond ATI Radeon 5750
    22" HP w2207h @1680x1050

  17. #17
    Member
    CgS Drone's Avatar
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    cpu-z spd screen shot?

    and cpu-z memory screen shot?
    C2D E8500, Gigabyte EP45-UD3P-------------955BE, TA890FXE, Cooler Master GX 750
    Cooler Master 212+, Corsair 750TX----------HAF 932, Noctua D-14
    HyperX T1 1066 5-5-5-15 (2x2GB)----------Geil Black Dragon (2x2GB)
    MSI GTX 260, Raptor 75gb.------------------Gigabyte GTX 460, Seagate 500gb

    >>>>>>>HeatWare<<<<<<<

  18. #18
    DrJack55's Avatar
    Join Date
    Aug 2010
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    Roseville, CA
    Quote Originally Posted by CgS Drone View Post
    cpu-z spd screen shot?

    and cpu-z memory screen shot?



    Corsair TX750 Power Supply
    Cooler Master HAF 922
    3x 200mm Cooler Master Fans
    Asus Crosshair III Formula
    AMD Phenom II 955BE
    (3.6 ghz, 1.350v, NB 1.25v @ 2400 MHZ, 52c)
    Scythe Mugen 2 w/ 2 120mm fans
    4gb Corsair DDR3
    Diamond ATI Radeon 5750
    22" HP w2207h @1680x1050

  19. #19
    DrJack55's Avatar
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    Aug 2010
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    Roseville, CA
    It seems to run alright at 3.7Ghz. All the same as prior screenshots, but I've dropped voltage to 1.375 and it appears to still be running stable on Prime95. Temps were 55/56c at 1.4v, now they are 54c at 1.375.
    Corsair TX750 Power Supply
    Cooler Master HAF 922
    3x 200mm Cooler Master Fans
    Asus Crosshair III Formula
    AMD Phenom II 955BE
    (3.6 ghz, 1.350v, NB 1.25v @ 2400 MHZ, 52c)
    Scythe Mugen 2 w/ 2 120mm fans
    4gb Corsair DDR3
    Diamond ATI Radeon 5750
    22" HP w2207h @1680x1050

  20. #20
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    Quote Originally Posted by DrJack55 View Post
    Oh, been reading Dolk's guide and I think I found my answer for instability if it's not related to temperature. NB Speed and Voltage. It's not at stock, but it's not as high as what is shown on his charts for the 940. I'm only at 2200 and 1.3 respectively.
    I'm really quite surprised you need that much cpuNB VID for your 955BE. Those chips seem to OC with less voltage than the 940BE (as they should since the process is older). Can't get a stable 2400 MHz at ~1.225 cpuNB VID? It would sure help the temps if you could.


    Also, if you don't mind my asking, what SETI username do you have ...?

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