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720BE question - Page 2

post #11 of 18
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Ram is G.Skill ripsjaw 4Gb 133 MHz don't know timings but everything is manual set.
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post #12 of 18
Quote:
Originally Posted by pc-illiterate View Post
i give up on helping with the 720's
amd dude comes into every one of them with his 3.8 bs. then he never visits that thread again to see what ive posted.
@amd-dude, stick with the x2 until you read the 700 club thread. these processors are c2 never a c3. only a handful at the MOST ever hit 3.8 at mega voltage.
the chips usually max out at 3.6 maybe 3.5 at moderately safe voltage.

my other post on the 720 http://www.overclock.net/amd-cpus/10...l#post13580746

what i typed in summary
from everything ive read 3.6 is the high point in the majority of high clocks on the 720. an x4 20, i dont see it getting any higher without serious cooling and then thats still not a problem. the chips run cool. they clock higher in almost all cases on an am3 board. 3.6 is only on am3 boards from EVERYTHING i have read. and it takes mega voltage.
a bit over 3.5 is normal on a ddr2 board if you can hit it without running into a voltage wall. it also depends on 32bit or 64bit. i could hit 3.2 unlocked on auto volts and 3.5 on 1.45-1.4626v on win7 32 bit. now im running a locked triple at 3.5 on 1.475 volts using win 7 64bit.
all i can say is dont get your hopes up.
check the stable/non-stable overclock max thread both locked and unlocked are there.
stated at the top,"stable defined by yourselves." that could mean anything including being able to post, boot and surf on firefox.

http://www.overclock.net/amd-cpus/am...00-series.html
I have to agree with a point or two posted above BUT my 720BE can hit 4.0+ on air no prob with voltage as low as 1.44v's.
To really be stable I have to give it about 1.47v's and temps are fairly good on air cooling, watercooling helps the stability some = It can go a little higher without crashing.
In reality, the highest I can get it on air alone is just shy of 4.1 with stability and being conservative with the volts to help temps stay down. On water it can go somewhat higher and still be stable but the CPU at that point needs more voltage to go higher, the 1.63v's with my 4389MHz run is about the absolute max I can get from it (without going for a 100% suicide run) and it still be useable with temps staying below 55c. Note my HT speeds are rather low but that was done on purpose to achive the clockspeed I got, it doesn't seem to like lots of HT speed after a certain point.

I make no claim that it's 100% stable there simply because I haven't tried to run it that way for an extended period of time (Yet) but from my testing of the chip at those speeds and settings, it seems to do OK - One day I will set it up again and see how it does.
Note that my chip doesn't unlock and I've noted a trend with chips that unlock vs those that do - It seems the unlockable ones for some reason won't clock as high on average even ran as a Tri-core. I can't explain that but I do know I'm perfectly happy with this one for obvious reasons.
Yes, all Heka core chips regardless of model or manufacturing date are C2 stepping chips, no C3's were ever made based on the Heka core.

Don't give up on your chip just yet, if you can keep temps under control and don't overdo the voltage, you may hit the magical 4.0 so many have tried to reach with these chips. I'd also try a little more bus speed with a lower multi used to help things out if possible, just remember to use the proper RAM divider if bus speeds get too high and a low enough HT multi too.

As for the rest, I'm just lucky to have one that does 4.0+.
Edited by Kryton - 5/22/11 at 8:09pm
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post #13 of 18
I really wish mine didn't unlock now...
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post #14 of 18
Quote:
Originally Posted by overclockingXTC View Post
I really wish mine didn't unlock now...
Well depending on your usage, there is no reason why you couldnt take the unlock off (ie return to 3 cores) and overclock more.

4 cores will not always help in improving perfromance as some games still only us up to 2 cores.
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post #15 of 18
Quote:
Originally Posted by Mitche01 View Post
Well depending on your usage, there is no reason why you couldnt take the unlock off (ie return to 3 cores) and overclock more.

4 cores will not always help in improving perfromance as some games still only us up to 2 cores.
I know, but according to what kryton said, if it has the ability to unlock then it won't be able to get past 3.6ghz. Which is pretty much true for me as I max at 3.6 unlocked and 3.7ghz on three cores.
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post #16 of 18
Quote:
Originally Posted by overclockingXTC View Post
I know, but according to what kryton said, if it has the ability to unlock then it won't be able to get past 3.6ghz. Which is pretty much true for me as I max at 3.6 unlocked and 3.7ghz on three cores.
That's not an absolute.
What I said was chips that do unlock have a tendency to not clock as high on average but it doesn't mean in all cases it won't get to 3.8 or better. Any given Heka chip has a chance to reach 3.8 or more and the fact whether it unlocks or not isn't so much a real factor BUT the trend or tendency seems to indicate chips that will unlock won't go as high on average as chips that do not.
I stated this based on my own observations with results from folks that stated their max stable OC's and whether it would unlock or not. There could be some details I've missed but take a peek at the chart in the 700 club, that will give you a clearer picture of this since it's based on actual results.

Bear in mind that if you unlock the chip, it will run hotter since you'd have another core generating heat and this makes keeping it cool more of a priority.
Phenom II's are temp sensitive chips and the difference of just a few degrees C can make or break a good OC with one.
Edited by Kryton - 5/23/11 at 1:10pm
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post #17 of 18
youre right on kryton.
there are a few freak chips out there that will overclock well. the majority wont. i just tell everyone attempting to hit 4.0 and trying forever to do it, that it is probably not going to happen.
people see all these x2 and other c3 chips clocking like a monster and wonder why they have problems and cant do it too. truth is, a 100mhz overclock isnt even guaranteed. only the stock speed is guaranteed and any extra speed is a bonus.
with that in mind, some people dont understand older 720 are c2 chips and usually need a good bit of voltage to push higher.
i post the 700 club link in my 720 posts as much as i can remember. i dont want to look like an ass with negativity but reality says 3.6 is USUALLY max on a ddr2 board with 64bit windows. a ddr3 board is little different. you can hit 3.7 if you dont mind the extra voltage, dont run 64bit and LOVE to play with all the bios features of your board.

all chips are different and the x3 c2 chips are no exception. i just try to give people a heads-up and then point to the correct thread (the 700 club) to see the max clocks with their voltages.
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post #18 of 18
Quote:
Originally Posted by pc-illiterate View Post
youre right on kryton.
there are a few freak chips out there that will overclock well. the majority wont. i just tell everyone attempting to hit 4.0 and trying forever to do it, that it is probably not going to happen.
people see all these x2 and other c3 chips clocking like a monster and wonder why they have problems and cant do it too. truth is, a 100mhz overclock isnt even guaranteed. only the stock speed is guaranteed and any extra speed is a bonus.
with that in mind, some people dont understand older 720 are c2 chips and usually need a good bit of voltage to push higher.
i post the 700 club link in my 720 posts as much as i can remember. i dont want to look like an ass with negativity but reality says 3.6 is USUALLY max on a ddr2 board with 64bit windows. a ddr3 board is little different. you can hit 3.7 if you dont mind the extra voltage, dont run 64bit and LOVE to play with all the bios features of your board.

all chips are different and the x3 c2 chips are no exception. i just try to give people a heads-up and then point to the correct thread (the 700 club) to see the max clocks with their voltages.
Yes, many folks with these will not get 4.0 from it simply because of the chip's limitations, mainly related to it's C2 stepping.
Remember that other factors can play a hand too like the board one is using, cooling, even the system RAM itself could be a factor but that's normally fixed with a divider so not a real issue so much as it a setting adjustment.

I'd have to say mine is a semi-freak chip that responds well to voltage and it's entirely possible I could put it in another board and do even better - Or never hit 4.0 with it in that board.
I'll just add don't judge or compare these against the Callisto's and Deneb's, these Heka chips are not the same architecture as the other two so they will act and perform differently.
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