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How far can i o/c my CPU? - Page 2

post #11 of 16
Quote:
Originally Posted by farmdve View Post
I'd rather NOT overclock on that mobo, since its not even 4+1 phases but 3+1.
If thats the case, Don't increase voltage. Don't put any more load on the phases than whats already on there.

3.9 is a good overclock for stock voltage. (except on chips like the 2500k where its just below average). I would leave it at that. Honestly, increasing your clocks wont do that much for performance, you'll need more cores. Any performance gain wouldn't be worth the extra heat and risk of instability.

Quote:
Originally Posted by nvidiagreencamp View Post
True their is almost no way that a phenom x2 555be and a 6850 both overclocked are running off a 400w psu
No it should work, but would i really wouldn't recommend it unless its a quality unit.

Quote:
Originally Posted by woundedrider View Post
Believe me there's almost no real difference between 400W and 500W or between 500 and 600...I have many computer engineer friends and they're all saying its just a marketing trick of companies.
No, there is quite a difference between a 400w and a 600w. But its not as big as the difference between a cheap 750w and a more expensive high quality 450w. I would go for the 450w every time because despite the difference in wattage, its actually capable of outputting more power.

On cheap psu's you can practically ignore the wattage rating because they will all blow up long before they even reach their rating. I think you are getting that confused with this.

That $30 750w psu might seem like a good deal, but not only is it not as capable as that more expensive good 450, its going to have far more ripple, have less safety equipment, and is much more likely to become a fire hazard!
Edited by alltoasters - 10/25/11 at 2:50pm
     
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post #12 of 16
Thread Starter 
Quote:
Originally Posted by alltoasters View Post
If thats the case, Don't increase voltage. Don't put any more load on the phases than whats already on there.

3.9 is a good overclock for stock voltage. (except on chips like the 2500k where its just below average). I would leave it at that. Honestly, increasing your clocks wont do that much for performance, you'll need more cores. Any performance gain wouldn't be worth the extra heat and risk of instability.



No it should work, but would i really wouldn't recommend it unless its a quality unit.
Yea i tried every way to unlock the hidden cores but i couldn't :/ ACC:auto Firmware:Hybrid save&reboot....and....just a black screen and bleeping case ://
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post #13 of 16
Thread Starter 
Quote:
Originally Posted by alltoasters View Post
If thats the case, Don't increase voltage. Don't put any more load on the phases than whats already on there.

3.9 is a good overclock for stock voltage. (except on chips like the 2500k where its just below average). I would leave it at that. Honestly, increasing your clocks wont do that much for performance, you'll need more cores. Any performance gain wouldn't be worth the extra heat and risk of instability.



No it should work, but would i really wouldn't recommend it unless its a quality unit.



No, there is quite a difference between a 400w and a 600w. But its not as big as the difference between a cheap 750w and a more expensive high quality 450w. I would go for the 450w every time because despite the difference in wattage, its actually capable of outputting more power.

On cheap psu's you can practically ignore the wattage rating because they will all blow up long before they even reach their rating. I think you are getting that confused with this.

That $30 750w psu might seem like a good deal, but not only is it not as capable as that more expensive good 450, its going to have far more ripple, have less safety equipment, and is much more likely to become a fire hazard!
OK i promise i will change my psu as soon as i find a job
What can you tell me about the failure of unlocking the cores? Is it because of my PSU? or my mobo?
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post #14 of 16
Quote:
Originally Posted by woundedrider View Post
OK i promise i will change my psu as soon as i find a job
What can you tell me about the failure of unlocking the cores? Is it because of my PSU? or my mobo?
I've never done a core unlock, but my guess is that its the cpu itself.

When chips are made, often cores go bad and dont work correctly, so the faulty cores are deactivated and chip is sold minus however many faulty cores there are. (A x4 with 1 faulty core is an x3, etc)

Sometimes in order to fulfill demand for the lower end chips, higher end ones are sold partially deactivated. These unlock perfectly.

It could be that your cores were deactivated for a reason, as they are faulty.
     
CPUMotherboardGraphicsRAM
Intel Core i5 2500k @ 4ghz Asus P8P67 pro Gigabyte GTX780 12GB Corsair RAM (2/3 vengance, 1/3 XMS3) 
Hard DriveHard DriveHard DriveOptical Drive
500gb Spinpoint f3 Samsung 840 EVO 120gb Seagate 7200.14 2tb Samsung dvd+-rw 
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Noctua NH-D14 Windows 7 ultimate x64 LG 24MP55 x2 LG 32LD450 
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SSD soon None Inadequate Win7 of course 
MonitorKeyboardCase
It's awful A bit meh, Bodged hinge repair (Nut and bolt through back ... 
CPUMotherboardGraphicsRAM
Celeron M 360 1.4ghz Packard bell easynote (lynx banias) Intel 855gm 768mb 
Hard DriveOptical DriveOSMonitor
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KeyboardPowerCaseMouse
one with buttons Brick It has one It has leds 
Mouse Pad
my lap or the chair 
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CPUMotherboardGraphicsRAM
Intel Core i5 2500k @ 4ghz Asus P8P67 pro Gigabyte GTX780 12GB Corsair RAM (2/3 vengance, 1/3 XMS3) 
Hard DriveHard DriveHard DriveOptical Drive
500gb Spinpoint f3 Samsung 840 EVO 120gb Seagate 7200.14 2tb Samsung dvd+-rw 
CoolingOSMonitorMonitor
Noctua NH-D14 Windows 7 ultimate x64 LG 24MP55 x2 LG 32LD450 
KeyboardPowerCaseMouse
Dell thing. Corsair TX650 Coolermaster cm690 Logitech G500 
Mouse PadAudioAudio
none Xonar DG and logitech X-540 Beyer DT770 PRO 
CPUMotherboardGraphicsRAM
AMD A6-4455m 2.1ghz Dual Covered in tea stains Radeon 7500G 6GB 
Hard DriveOptical DriveCoolingOS
SSD soon None Inadequate Win7 of course 
MonitorKeyboardCase
It's awful A bit meh, Bodged hinge repair (Nut and bolt through back ... 
CPUMotherboardGraphicsRAM
Celeron M 360 1.4ghz Packard bell easynote (lynx banias) Intel 855gm 768mb 
Hard DriveOptical DriveOSMonitor
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post #15 of 16
Thread Starter 
Quote:
Originally Posted by alltoasters View Post
I've never done a core unlock, but my guess is that its the cpu itself.

When chips are made, often cores go bad and dont work correctly, so the faulty cores are deactivated and chip is sold minus however many faulty cores there are. (A x4 with 1 faulty core is an x3, etc)

Sometimes in order to fulfill demand for the lower end chips, higher end ones are sold partially deactivated. These unlock perfectly.

It could be that your cores were deactivated for a reason, as they are faulty.
Well then i will buy a whole new system too as soon as i find a job
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CPUMotherboardGraphicsRAM
Phenom 2 x2 555 BE (O/C 4,0 GHz) Asus m5a78l-le MSI hd6850 Cyclone Power Edition OC 4 GB Corsair DDR3 1333 mhz 
Power
700W OCZ 
  hide details  
Reply
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Phenom 2 x2 555 BE (O/C 4,0 GHz) Asus m5a78l-le MSI hd6850 Cyclone Power Edition OC 4 GB Corsair DDR3 1333 mhz 
Power
700W OCZ 
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post #16 of 16
You defo need a new PSU.

I dont know how good it is, but a decent 400W PSU can easily run that rig. however im not quite sure that 400W Cheap unit can do it xD
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