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Won't boot after certain value of FSB...Why?

post #1 of 14
Thread Starter 
So I overclocked my 1055t to 3.5GHz and it's stable. I can't seem to push it any higher , so just for the fun of it (and in annoyance)I changed the FSB to net me 4 GHz (locked multiplier, max 14).
I adjusted my NB, HT and RAM frequency accordingly, keeping the NB and HT close to 2 GHz and the RAM set to 1060 MHz (1333MHz sticks).
I put the CPU voltage up to 1.52 (don't want to go above that on my mobo).

So my noob question of the day is:
Why won't it boot?
(My only guess is that the CPU voltage is not enough.)
Powers on then posts " Overclock failure" and enters the BIOS.

Any ideas ? I am new to overclocking so don't go mental on me please .
Edited by octhis - 3/20/13 at 2:20pm
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post #2 of 14
As you raise the FSB the NB and CPU-NB will also increase in frequency, just up those by 1 and try again to see if you can boot.
     
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post #3 of 14
Thread Starter 
Quote:
Originally Posted by Pedroc1999 View Post

As you raise the FSB the NB and CPU-NB will also increase in frequency, just up those by 1 and try again to see if you can boot.

I've already adjusted all those values to be near the default values while the FSB is at a much higher value (286). Maybe that's the problem? Should I allow the NB and HT to be increased as well ?
My BIOS isn't very good for overclocking... The next step in the RAM frequency is 1443MHz or something like that and I don't know if my 1333MHz Kingston can take that. They are not heatsinked so I'm a bit worried about raising the RAM voltage.
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post #4 of 14
So you just went kamikaze.

I did that once. Totally screwed up everything, until I did a CMOS reset.

So.... I suggest doing a CMOS reset, and not going suicide style for 4GHz.

Its also a good idea to test for max stable FSB first. Especially when you have a locked CPU multiplier. Push the FSB as far as you can but keep everything else at or near stock speeds and voltages.
Edited by Baskt_Case - 3/20/13 at 9:49pm
    
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post #5 of 14
Thread Starter 
Are 'FSB walls' motherboard or CPU dependent? If I plug my 1055t into the Sabertooth 990FX r2 that I received a few days ago will i be able to go past 290MHz FSB ?
(managed to boot with 290 after I changed "DRAM REF Cycle Time" from 160 to 300ns)
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post #6 of 14
Their based on MB, as the FSB affects everything that is connected to it, so it can accept higher tolernces
     
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post #7 of 14
1.52v is at the high end and I personally wouldn't go that high. I would stick to 1.47-1.48 but that's just me.

When overclocking don't jump from 3.5ghz to 4ghz, even if you lower/offset the other things like ram speed, NB, HT to try to get them to have a zero net change after the FSB jump. Take things in increments. My guess is that the huge FSB jump IS jumping one of the other factors a lot higher than spec, causing it to not boot. Also, it could just be that your mobo is just not capable of that high of an FSB. Overclocking is all about adjusting and exploring.

But you should def be able to hit more than 3.5 on the 1055t that's a bit too conservative of an OC to me. My best advice: Try small FSB increases and see how it affects your system, noting what your ram is running at, what your NB and HT is.. and go from there.
post #8 of 14
1.52v is pretty high in my opinion. I agree with Spicy61 that the FSB increase has changed a different factor higher then specs. Start from stock and slowly work your way up.
post #9 of 14
Thread Starter 
I've bought a new mobo now, and can boot with a much higher FSB. I've got other problems now, such as my some of RAM not being detected at a high FSB mad.gif
And unfortunately my 1055t ran on 1.41v at its stock speed of 2.8 GHz . It runs like that on my new board as well.
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post #10 of 14
octhis, I have a suggestion which may take a bit of time but I guarantee will be worth the effort in the end. This link is attached to a thread I created asking everyone on their opinions on what I can do to push my old computer to it's limits; looking at the format of the post, I included all my Hardware as well as BIOS settings so that people could know exactly what I was working with. What does this mean? This means that if you forgot to mention you have Virtualization on (a BIOS setting, for example purposes only, it doesn't really have a big impact on the system) it might throw off the entire system and no one here on the forum knows about it hence, you keep running into a OC wall. Hope this helps and best of luck! thumb.gif
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