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Overclocking with a Unlocked 555? - Page 2

post #11 of 26
Sheesh, mine must be pretty golden, as it's at 4Ghz at 1.487v with LLC on. And it unlocked to quad at stock volts.

Cores are not always locked for being broken, sometimes they're locked because they need to supply more duals than quads.

There is NO CAP, it's all down to the individual chip, some just will not go over 3.6 or 3.7GHz, others will go way higher. It's down to luck, and your other parts. A good PSU and board are essential when overclocking, as is a great cooler. My old Xigmatek ran out of cooling power at about 3.8Ghz with a quad. The H212+ should let you hit 4, if your chip is capable of it.
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post #12 of 26
Quote:
Originally Posted by Bowser View Post

Dangerous voltage I'd say.
What are your temps?

360
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post #13 of 26
Quote:
Originally Posted by ~kRon1k~ View Post

i have a 4+1 board and run my unlocked 555 at 4.4Ghz 24/7 1.625v with corsair a50

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post #14 of 26
Quote:
Originally Posted by ~kRon1k~ View Post

i have a 4+1 board and run my unlocked 555 at 4.4Ghz 24/7 1.625v with corsair a50

For now you do. That won't last long, especially if you stress it constantly.
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post #15 of 26
Well i'm no expert (although i should be given my forum name LOL). I only got my B-55 a few days ago.

But i am 'hopeful' of reaching 4ghz. As long as i keep temps under 62C and try not to pump more than 1.5v through it i'll certainly give it a go.

I did have a 955 a while back - which could only do 3.8ghz for 24/7 use - but that was just a bad chip. As stated above - it really depends on the quality of the chip.
Luck of the draw really!

And 4+1 power phase shouldn't hold you back as long as you don't go pushing more than say 1.5v/1.52v though it. No more though!
Under 1.5v would be preferable for 24/7 use.
post #16 of 26
Well for me i am stable at 4.300 with 1.52-153 and cpu_nb 2800 with 1.325.
And i also have the hyper with push pull BUT i say BUT,it all depends on yoyr chip of course.i have great temps (well,cpu temps and not cores) but i do not feel confident to have it with 1.52v for just 300 mhz so i believe i should be happy with 1.368 at 4.0.(<-- nice find this,i was at 1.44 for 4.0 but after playing with bios and doing fine tuning i believe i am more than happy).

The only thing i want to ask you is what is the defference in temps on cores between X2 vs X4 uder stress cause we cant see them.everything else same.lets say 4.0 X2 at 1.44 and 4.0 X4 at 1.44.both cpu_nb 2800.


Edited by Thanos1972 - 11/21/11 at 2:37am
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post #17 of 26
Psh, I ran 4ghz on a C2 stepping 550 that was unlocked. That was with a Mugen 2 and two FM121 fans. If your cooling (and motherboard) is adequate 4.2ghz+ should be no problem for C3 with some fat NB overclocking too.
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post #18 of 26
Quote:
Originally Posted by iinversion View Post

For now you do. That won't last long, especially if you stress it constantly.

i have had this board running over a year this way with no issues. i did put copper heatsinks on the mosfets along with two delta AFC1212DE fans on the cpu cooler. i also run pcie speed at 150Mhz 24/7 with no issues, and it helps give better fps in games smile.gif
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post #19 of 26
I have my 555 unlocked to a quad running at 4ghz/4.520v prime 95 stable with a Antec khuler 620 in push pull config, I'm going to try lowering the volts as much as I can & will post back when I have.

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post #20 of 26
Quote:
Originally Posted by ~kRon1k~ View Post

i have had this board running over a year this way with no issues. i did put copper heatsinks on the mosfets along with two delta AFC1212DE fans on the cpu cooler. i also run pcie speed at 150Mhz 24/7 with no issues, and it helps give better fps in games smile.gif

Unfortunately no amount of heat sinks is going to help with the voltage regulation itself.. and 1.62v is way too much for 4+1 phase to handle & especially when it's under load.. despite whatever cooling you have on them. I'm not saying you CANT do this, because obviously you have been.. but it isn't safe AT ALL. One day your motherboard is going to fail and your going to know why.
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