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How to change P5WDH multi?

post #1 of 13
Thread Starter 
hey guys, dumb question. I have been overclocking my processor thought a little bit of a FSB boost, but left the multi alone.

my multiplier is at 20x right now, but I want to drop it to 14x to let this new ram I got spread its wings a little. However, I can't figure out how to.

I did it before by just selecting the "Modify ratio support" on the bios (1901, btw). But now, even though I have that selected, my multiplier remains at 20. Any thoughts on how to drop it?

thanks
    
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post #2 of 13
I belive!

That you either update to the latest BIOS which I'm not 100% sure if the Modify Ratio Support feature is available.

Or, that there was never an available option for that chipset (or motherboard) in particular.
post #3 of 13
Thread Starter 
I know that I had my multiplier change once before. But I cant remember if it was on my 805 or my 560. However, the option to "modify ratio support" is available and set to "enable" but there are no other options and the ratio doesn't change.


Googling the issue doesn't help much, but googling Pentium 805 multiplier yields the fact that its unlockable downward to 14x.

What the heck....
    
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post #4 of 13
I recently had a 630 and an 830 in my P5B, I couldn't change the multi with either.
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post #5 of 13
Thread Starter 
Son of a gun.


Well, this is SO confusing. I am absolutely positive that I changed the multi on one of my two processors. However, I dont know why I would be able to do it on a 560 and not an 805. The 560 was a D0 revision.

Hrm, this is sooo bizarre.
    
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post #6 of 13
Quote:
Originally Posted by killnine View Post
Son of a gun.


Well, this is SO confusing. I am absolutely positive that I changed the multi on one of my two processors. However, I dont know why I would be able to do it on a 560 and not an 805. The 560 was a D0 revision.

Hrm, this is sooo bizarre.
Tried CMOS clear yet? IDK if that would help though, didn't me.
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post #7 of 13
It was the 560, just like the 660: http://valid.x86-secret.com/show_oc.php?id=85130

The 805 can't because it's not one of those CPUs that support that feature but the 3.60ghz and 3.80ghz will certainly do that.
post #8 of 13
Quote:
Originally Posted by Nasgul View Post
It was the 560, just like the 660: http://valid.x86-secret.com/show_oc.php?id=85130

The 805 can't because it's not one of those CPUs that support that feature but the 3.60ghz and 3.80ghz will certainly do that.

Wonder why the 830 I had couldn't?
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post #9 of 13
The only Dual Core capable of modifying the ratio was the Pentium D 960 but from what I can recall, when modifying the ratio to x12, the CPUs performance suffer badly and was not stable, so it was pointless.

And to this date to run a low multi and a high fsb speed, it's not worth it. I've used 450x7 and now 350x7 and see no difference in performance, so I don't bother with lowering the multi. For Intel CPUs, it's all about the clock speed.
post #10 of 13
Thread Starter 
Well the only reason I wanted to lower the multi is because I thought pumping up the fsb relieved the stress on the chip and moved it to the northbridge a bit. But I am probably just making that up.
    
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