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BCLK questions - Ivy Bridge

post #1 of 7
Thread Starter 
A few days ago, my computer suddenly booted with a BCLK of 100.3 and has been like that ever since.
-Is this a "safe" BCLK? I heard that adjusting the BCLK speed over 100 could cause damage to other components, such as video cards.
-BCLK is 100.3 on Auto (in BIOS). When I manually set it to 100, my CPU clock speed is 3900.39MHz instead of just 3900MHz, why is this?
-Could the heightened BCLK speed be a sign of a damage CPU or Motherboard?
CPU: 3770k
Motherboard: Maximus V Formula
post #2 of 7
It shouldn't be anything to worry about. When I put my multi to 40 and BLK on auto on my 2500k, I somehow get like 4050mhz. Either way, an additional 0.3 is nothing.
post #3 of 7
It's normal for them to be a little off of 100. Don't worry about it. If you set it to 103 or 104 or something it can cause problems, but 100.3 is fine. If it is really bothering you, you can check and see what is set for Spread Spectrum in the BIOS - disabling that might bring it back to an even 100.
post #4 of 7
it is perfectly fine, my 2600k never has a perfect 100MHz BCLK, its always a bit over..

there is a lot of debate to what is safe, i say 103MHz is safe smile.gif
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post #5 of 7
I'm at 4501 MHz right now with a 45 multiplier. BCLK is never a perfect 100, I'd say +/- 1 MHz is normal, at least for me. I couldn't say why is fluctuates, but it's nothing to worry about, every computer does it. My old P4 server does it too, and it's a dell oem type thing, never overclocked or anything.
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post #6 of 7
Thread Starter 
Would turning spread spectrum off affect anything other than BCLK? Is it recommended to be off or on?
post #7 of 7
Quote:
Originally Posted by Iamazn View Post

Would turning spread spectrum off affect anything other than BCLK? Is it recommended to be off or on?

For low overclocks you can leave it enabled but for anything over 4.5+ you should disable. Any bclk under 103 is fine but if you decide to manually set it use these increments 100, 100.5, 101, 101.5, etc.
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