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Overclocking FSB wall in CPU?

Discussion in 'Hardware' started by Mr Meltdown, 26 Aug 2009.

  1. Mr Meltdown

    Mr Meltdown Minimodder

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    Out of the loop for a while, but basically i want to crack 400FSB on my CPU(s).

    The question is: does my cpu have a FSB wall?

    I've got a celeron e1200 1.6Ghz that should easily do 3.2Ghz+ @ 400FSB that is my goal. Its in my Abit @ 2.66Ghz low volts and happy but the mobo wont do more that 360ish....

    Anyhoo, I want to leave that in there until im good and ready to swap over to my new faster mobo.....

    I have got my hands on 2 Asus P5K P35 mobo and they top out POSTING @ 375 / 385 with a E2160 1.8Ghz CPU with the multi set low like 6 or 7 as im trying to find a mobo that does 400+ And yes the Asus should do that easily!!

    Gave up and got a DFI P45 mobo that the owner says boots @ 600FSB!!! But WTF I cant even boot 350FSB with the e2160, unless im being dumb that is.....

    Now then, is it my CPU that im trying this with that has a FSB wall? ....Surely it should do 7 x 400 = 2.8Ghz as it boots 3Ghz no problems on lower FSB.

    Help me as this is stupid. ......My last resort is to swap the celeron out and use that to test as that is the CPU I want to overclock beyond 100% anyway.

    Cheers
     
  2. Krikkit

    Krikkit All glory to the hypnotoad! Super Moderator

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    A 100% overclock is very, very optimistic for your celeron E1200; 360FSB is quite respectable.

    385FSB with an E2160 is also pretty damn good, FSB and multipliers aren't just a simple equation.

    What you've managed so far is very good, you were just setting your sights a little high. :p
     
  3. Mr Meltdown

    Mr Meltdown Minimodder

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    I disagree. Anyway got the DFI posting at 385FSB now as well by pushing volts thru everything. Not very impressed tbh, but i recon it is a wall in the CPU. Going got swap out the e1200 and test again to confirm.

    Cheers
     
  4. Krikkit

    Krikkit All glory to the hypnotoad! Super Moderator

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    What do you disagree with? A 100% overclock is pretty unusual, it's not an easy thing to achieve and just expecting it straight from the box without much effort is daft.

    That DFI board will post at 600FSB, and you're only asking for 400; so it sounds like a) you're not using it properly (unlikely for those boards) or b) you've simply hit the limitations of the chips.

    Be careful with your voltage settings, it's easy to overdo it.
     
  5. LeMaltor

    LeMaltor >^_^

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    ram? Bios?
     
  6. Mr Meltdown

    Mr Meltdown Minimodder

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    OK looking like CPU FSB wall as i can lower NB and SB volts to default and post 380fsb if i crank the CPU volts up high to test (1.53v) which i dont ever like doing....

    Out comes the e1200 from my machine for comparision.... well well well..boots @ 435FSB and is now running Windows 7 @ 3.2Ghz as i type at 1.4v (may do less volts with tinkering) :)

    See i told you...(not bad for a chip that cost me £10)
     
  7. Krikkit

    Krikkit All glory to the hypnotoad! Super Moderator

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    I don't know if you read things properly, but I certainly agreed it was an FSB wall.
     
  8. Burnout21

    Burnout21 Mmmm biscuits

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    Drop the multiplier back, and it should allow for a higher FSB.

    The main bottleneck is the CPU, not the board. I agree with Krikkit a 100% OC isn't going to easy at all if possible at all. There are a few golden CPU's out there capable of it.

    You ninja posted me,

    Running 1.4v and over and it wont last very long at all.
     
  9. KayinBlack

    KayinBlack Unrepentant Savage

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    BSEL mod it. That will answer that question.
     
  10. Mr Meltdown

    Mr Meltdown Minimodder

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    No multi adjustment on celerons its locked at 8x. Default volts is 1.275v so 1.4 aint anywhere near going to kill it. Your stuck in 0.45nm mindset guys :) It is well happy @3.2Ghz which is exactly what i wanted, ......but was getting confused by the other CPU i was testing motherboards with....
     
  11. Burnout21

    Burnout21 Mmmm biscuits

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    Nope again you fail to read. I said drop the multiplier which allows the CPU to push the FSB much harder for the voltage its supplied.

    If its a E1200 then its a Allendale core based on the 65nm build, thus anything over 1.4v in the long term, even short term can permentally damage the core.
     
  12. LeMaltor

    LeMaltor >^_^

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    I've run my 65nm on 1.45 for over a year :p
     
  13. Burnout21

    Burnout21 Mmmm biscuits

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    From what i've understood anything over or equal to 1.4v is generally bad news.
     
  14. Mr Meltdown

    Mr Meltdown Minimodder

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    E1200 happy @ 3.2Ghz with 1.32V Has a FSB wall on this CPU of 435FSB even with lower multi. Happy enough with that though. :)

    Cheers
     

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