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Phenom II 555 BE quick question

post #1 of 6
Thread Starter 
Hey guys, I have three 555 BEs and unfortunately none of them unlocked a single core! Anyhow, after the crying and the acceptance I have since moved on with my life with this dual core. Anyways, I hear people saying conflicting things like NB voltage does not really need an increase while I hear people saying to up NB voltage to around 1.35. So what is the verdict? Stock is 1.2250 and I am currently running NB at 2800 at 1.275. I have primed for 2 hours and it is stable. I have also gamed on it and it seems stable as well.

My set up is as follows:

555 BE on 2 cores
4ghz (all through the multiplier) @ 1.44 volts
890fxe mobo
NB 2800 @ 1.275 volts

Thanks for your input guys.
post #2 of 6
Well you don't need to increase the voltage unless it's unstable. Increasing the voltage will only increase temps and waste energy.
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post #3 of 6
I use to use a 555 before I switched to a 955 and never had to mess with the NB Voltage to get a stable OC at 3.6 Ghz
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post #4 of 6
Thread Starter 
sprice: i understand that concept but when i hear people saying set NB voltage to 1.34-1.35 for NB to be running at 2800 it gets me concerned that i am missing some info as i am not even close to that figure. also, i was unstable earlier and so this discrepancy gots me thinking if i am doing my NB correctly

bobican: if you are simply OC the 555 then you don't need to touch the NB voltage. I am talking specifically about NB overclocking. I have NB at 2800, the processor is at 4ghz.


basically, for those people who have NB set at 2600-3000 on a 555 black, what voltage are you running? that is a better way to phrase this.
post #5 of 6
NB @ 1.35 is fine as long as you have the cooling in check.
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post #6 of 6
Quote:
Originally Posted by Spicy61 View Post
Hey guys, I have three 555 BEs and unfortunately none of them unlocked a single core! Anyhow, after the crying and the acceptance I have since moved on with my life with this dual core. Anyways, I hear people saying conflicting things like NB voltage does not really need an increase while I hear people saying to up NB voltage to around 1.35. So what is the verdict? Stock is 1.2250 and I am currently running NB at 2800 at 1.275. I have primed for 2 hours and it is stable. I have also gamed on it and it seems stable as well.

My set up is as follows:

555 BE on 2 cores
4ghz (all through the multiplier) @ 1.44 volts
890fxe mobo
NB 2800 @ 1.275 volts

Thanks for your input guys.
NB Voltage is for the chipset, should stay on auto and run fine.

To stabilize the NB Freq you adjust the CPU/NB Voltage (VDDNB). typically stock is around 1.2v and for a 2800MHz NB Freq you may need as much as 1.3-1.35v and max safe is 1.4v.

To be considered stable most on OCN consider it stable after 24 hrs of Prime95.

Have you considered raising the HTT (FSB) for a more complete system OC? It will give you better performance. I had my x2 555 BE (260 x 15.5) at 4043GHz @1.487v, NB Freq 2869MHz@1.375v, HT Link 2087MHz and Dram 1739MHz 5-5-5-15 and with a GTX275 could play with everything on max settings without any issues.

You should also post your rig sig so we can have a better idea of what your working with when asking for help.
 
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Bruce
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FX 6350 Asus M5A99FX Pro R2.0 GTX220 G.Skill Ripjaws X F3-17000CL9D-8GBXLD 9-11-9-28... 
Hard DriveHard DriveHard DriveOptical Drive
Samsung 840 Pro WD20EFRX 64M Red x4 raid 10 WD5001AALS Blk Asus DRW-24B1ST 
CoolingOSMonitorKeyboard
Hyper 212 Evo R2 Windows Server 2008 R2 Standard Asus  Logitech MK300 
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Corsair HX500 Corsair 330R Titainium 
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