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AMD64's and half multi's

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I agree, Jeff. But I still am having trouble figuring out why I'm hitting an overclocking wall with 310 FSB, 8x multi, with ram running an actual 186 (120 divider). BUT, when I drop that to a half multi 7.5, FSB 333, and ram at an actual ### (no idea, but it's a 120 divider) I can prime 12 hours with a LOT less voltage.

So, in one case my chip can't get to 2500. I mean it won't even POST. And then, in the other, it'll do 2500 for 12 hours.

I have Value ram, but at 186mhz actual, it's not exactly being "held back". So, if it's truly even more underclocked in the half-multi scenario, is that what is allowing it to get over the 2500mhz wall? If so, then I should be able to attain this-- 310 FSB, 8x multi, 1:2 divider (ram actual 155mhz) and have it work. But it doesn't.
 
Well corecenter with MSI will report some funky-arse number when running .5 increments, but like mentioned above when calculated it seems close and when set to a regular whole number for multiplier and set the divider to have similar calculated ram speed the numbers seemed ballpark.....

This may be a mobo issue...

Also stability my arse...I ran 8.5x312 for 8 hours(prime) and had no issues. The only reason I dont run it now cause I can run 8x330 and it gives me better memory speeds....


I dont know that guy so I can vouch for anyones credibility...that being said I believe most ppl are morons and I never trust anyones word if I can test it myself....That includes piss-arse reviews like at these types of sites...In most instances I have proven them wrong with my own testing...

I will run some pics and test later on when I have the time...
 
Originally posted by: deadseasquirrel
I agree, Jeff. But I still am having trouble figuring out why I'm hitting an overclocking wall with 310 FSB, 8x multi, with ram running an actual 186 (120 divider). BUT, when I drop that to a half multi 7.5, FSB 333, and ram at an actual ### (no idea, but it's a 120 divider) I can prime 12 hours with a LOT less voltage.

So, in one case my chip can't get to 2500. I mean it won't even POST. And then, in the other, it'll do 2500 for 12 hours.

I have Value ram, but at 186mhz actual, it's not exactly being "held back". So, if it's truly even more underclocked in the half-multi scenario, is that what is allowing it to get over the 2500mhz wall? If so, then I should be able to attain this-- 310 FSB, 8x multi, 1:2 divider (ram actual 155mhz) and have it work. But it doesn't.
Click to expand...

It's possible it's your RAM... I'm having similar problems with my RAM that uses CH-5 chips. Runs fine at 2-3-3 @ 217 MHz and at 200 MHz. I've verified that the processor is capable of at least 2.4 GHz... and I've verified that HTT at 280 MHz is perfectly stable. But if I try to run the following settings...

HTT @ 260, RAM divider @ 133, CPU mult. @ 8X, LDT @ 3X

... it will not even POST and I have to reset the CMOS.

However...

HTT @ 260, RAM divider @ 100, CPU mult. @ 8X, LDT @ 3X

... works perfectly. So I've narrowed it down to the RAM being the problem, and someone told me that CH-5 chips don't work real great for my combo.

Right now I'm running HTT@ 240, RAM divider # 166, CPU mult. @ 10X, LDT @ 4X and it's running perfectly stable on 1.4 volts. I have no problem running 1.5 or 1.55 to the CPU, but there's no point right now since it's not the CPU causing instability, but the RAM.

Maybe you're having a similar compatability issue?
 
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