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720BE or E8400?!

Meecrob

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I don't think thats true for all of them. For instance my 720 needs 1.44 to be remotely stable with a 600Mhz OC. I think they measure them to where they should be anymore and not undervolted. But more so it all depends on the chip as no two chips are the same.

amd and intel DO set chips above what they need for the bulk of them to be stable, its a smart move, it means they can get higher yeilds of chips they can sell for higher prices.

I have seen chips come out that you can undervold DRASTICALLY (Sub 1volt) at stock, where others of the same model couldnt be undervolved by much at all, BUT they could be taken down a tick or 2 minimum.

also they have to rate the chips higher then the chips really need in order to keep OEM's from cheaping out and using boards that have voltdrops below what the chip needs to be stable at stock, again smart move for volume sales, and its kinda fun for geeks as well when u can oc and undervolt a chip(if u get a good one)
 

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You have bad luck with chips :( I am able to run my 720 at 2.9ghz with 1.21v. And I can run it at 3.5ghz with 1.4v (haven't tried lower). I even have my gf's 7750 running at 3.4ghz 24/7 at 1.375v.

A 600Mhz OC is 3.4Ghz 720 ;) So you are right there with me.

amd and intel DO set chips above what they need for the bulk of them to be stable, its a smart move, it means they can get higher yeilds of chips they can sell for higher prices.

I have seen chips come out that you can undervold DRASTICALLY (Sub 1volt) at stock, where others of the same model couldnt be undervolved by much at all, BUT they could be taken down a tick or 2 minimum.

also they have to rate the chips higher then the chips really need in order to keep OEM's from cheaping out and using boards that have voltdrops below what the chip needs to be stable at stock, again smart move for volume sales, and its kinda fun for geeks as well when u can oc and undervolt a chip(if u get a good one)

Sorry not convinced.
 

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A 600Mhz OC is 3.4Ghz 720 ;) So you are right there with me.

Right, but your 100mhz back, and your running 1.44v and I'm able to run 1.40v, and possibly lower, but I just set it at 1.4v and ran it.
 

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Right, but your 100mhz back, and your running 1.44v and I'm able to run 1.40v, and possibly lower, but I just set it at 1.4v and ran it.

Well sure I can run it at 1.4 or less. But is it stable? Further more will it blend?
 

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It's stable, had it run p95 for 8 hours while I was sleeping, woke up and it was chugging along just fine. Granted mines under water, but shouldn't matter a ton, you got a pretty good cooler.
 

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look up "CPU binning" or "Processor Binning" that should help clear up your clear confusion.

I know what that is and again no two CPUs are the same.
 

Meecrob

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I know what that is and again no two CPUs are the same.

yes, thats why they overvolt them all(not a huge overvolt in every case, but enough that they all will be stable in any board they are slapped into)

Like back in the axp days, I went in with a few friends and we got a TRAY of 1700+'s, some overclocked crazy good at extreamly low volts and still ran cool, most didnt, but they all clocked to 2.3gz with a good cooler on a decent board, some took 1.8volts or more to get there tho :(

but the same chips/cores where being binned at higher stock volts and sold as 3200+'s, the 1700's where only so good because the demand for such chips was VERY VERY high and forced amd to bin large numbers of perfectly good chips down.

blah, little OT on that, but still somewhat germane since it shows that you can get lucky or unlucky.

Oh and i got the same kinda effect out of the p3 550e's some could clock to 866 at STOCK VOLTS others needed a bit of a volt boost to get there :( (couldnt undervolt them at the time, most boards didnt allow that :/ )
 

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My 720 does 3.9ghz with 1.52v :p I usually just keep it at stock tho. Plows through everything at 2.8ghz, why would I need it any faster? It's also one of the very first batches, and doesn't unlock.. It's actually a week behind the batch that does unlock successfully :(
 

Meecrob

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My 720 does 3.9ghz with 1.52v :p I usually just keep it at stock tho. Plows through everything at 2.8ghz, why would I need it any faster? It's also one of the very first batches, and doesn't unlock.. It's actually a week behind the batch that does unlock successfully :(

you tried lower vcore and higher northy volts? if not give that a go see what u can get without a huge volt boost.

1.52 apparently is safe on them tho, alot of people have been running more then that thru them since the day they came out without any problems :O
 

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you tried lower vcore and higher northy volts? if not give that a go see what u can get without a huge volt boost.

1.52 apparently is safe on them tho, alot of people have been running more then that thru them since the day they came out without any problems :O

I wouldn't trust 1.5 for 24/7 use. I get nervous at 1.45.

My 720 does 3.9ghz with 1.52v :p I usually just keep it at stock tho. Plows through everything at 2.8ghz, why would I need it any faster? It's also one of the very first batches, and doesn't unlock.. It's actually a week behind the batch that does unlock successfully :(

If you still had your MSI it would unlock ;)
 

Meecrob

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I wouldn't trust 1.5 for 24/7 use. I get nervous at 1.45.



If you still had your MSI it would unlock ;)

well i can tell you, people allover the net are doing it and have been, I try and stay below 1.5 myself, even on my 90nm chip i KNOW COULD TAKE IT.

3.4@1.44 out of a windsor is pretty good from what i have seen :)
 

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I wouldn't trust 1.5 for 24/7 use. I get nervous at 1.45.



If you still had your MSI it would unlock ;)

It doesn't unlock at all. I've tried it with 4 different boards.
 
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I did it on my 4200X2 1.1v i dont know if it was exactly like 1.1v but it was below 1.2 on 2.4MHz
 
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how its look PII 955X4 vs 920 I7?
 

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how its look PII 955X4 vs 920 I7?

Stop being lazy and use google:)












Full review here: http://www.anandtech.com/cpuchipsets/showdoc.aspx?i=3551&p=1
 

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GRRR no E8400 Pssshhh, heck they should of had that there too as seen as it sold so well too.
 
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show few pic of it :]
 

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yes the stability of this oc
 

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Maybe because unlocking cores is a gamble?

Indeed but apparently according to a lot of forums the 550s have a far greater success rate of unlocking cores in comparison to the 720, some people claim its a near 100% guarantee. I think they are exaggerating slightly.

F430,

This thread is getting ridiculous, its been a few days now and 5 pages, surely you've decided which CPU you are buying by now? Thought you were getting the X4 955 and now you are talking about the 550/720 to unlock cores, make up your mind.


Edit:


Unlocking the core isnt the gamble. I myself have done it. The gamble is the core being stable. Remember they were locked for a reason.

That is what I meant, owners of the 550 have a better likelihood of having a stable core after the unlock than the X3 owners, according to what I've read on forums like Xtreme Systems.
 
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