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Can too much voltage cause instability?

post #1 of 6
Thread Starter 
This is kind of weird, lately, my OC has been unstable for some reason even though It passed 24 hours of prime about last november at 4ghz.

now I can't seem to get it to sit stable at 4ghz so i dumbed down to 3.9ghz and it keeps crashing at 1.5v, so eventually I ended up bogging it down to 1.45.

Too much voltage can cause instability? I remember last time i had it runing at 3.9ghz i had to bump it to 1.5v

also voltage reading, when i manually type in the voltage I want, lets say 1.5 and in bios hardware monitor shows 1.53v as to 1.5v, what's the deal with this? if i set it to 1.55 it shows 1.58
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My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Phenom II x4 955BE C3 4.0ghz ASUS CrossHair IV Formula Zotac GTX 570 940/1880/4300 G.Skill Ripjaw8gb ddr3-1333 
Hard DriveOSMonitorKeyboard
WDl Caviar Black 500GB 7200RPM Win 7 Home premium 64bit Asus ML238H 1920 x 1080 Logitec G110 
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XFX 850W Black Edition Corsair Graphite 600T Razer Deathadder razer goliathus fragged 
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post #2 of 6
more voltage=more heat

and also you might be going over your cards abilities. try lowering your clock a bit if you can't get it stable at 4ghz

also i assume you have an asus board? LLC is probably what is causing the voltage difference. also try reading it with cpu z 1.56. might show a difference.

good luck!
post #3 of 6
just read where you said it tested fine with prime for 24 hours.

the top rated voltage for the b55 be is 1.55v. see if a little extra power will make it happy
post #4 of 6
YES, too much voltage can even kill your processor, so be carefull
Edited by saw4974 - 1/23/11 at 8:31pm
post #5 of 6
Thread Starter 
it's kind of weird, I had it running at 4ghz for last 2 months or so with voltage of 1.53 and I fold too and lately it's been crashing.

CPU-z reads same as the hardware monitor in bios.

eek, didn't know more voltage could make things unstable
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Phenom II x4 955BE C3 4.0ghz ASUS CrossHair IV Formula Zotac GTX 570 940/1880/4300 G.Skill Ripjaw8gb ddr3-1333 
Hard DriveOSMonitorKeyboard
WDl Caviar Black 500GB 7200RPM Win 7 Home premium 64bit Asus ML238H 1920 x 1080 Logitec G110 
PowerCaseMouseMouse Pad
XFX 850W Black Edition Corsair Graphite 600T Razer Deathadder razer goliathus fragged 
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My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Phenom II x4 955BE C3 4.0ghz ASUS CrossHair IV Formula Zotac GTX 570 940/1880/4300 G.Skill Ripjaw8gb ddr3-1333 
Hard DriveOSMonitorKeyboard
WDl Caviar Black 500GB 7200RPM Win 7 Home premium 64bit Asus ML238H 1920 x 1080 Logitec G110 
PowerCaseMouseMouse Pad
XFX 850W Black Edition Corsair Graphite 600T Razer Deathadder razer goliathus fragged 
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post #6 of 6
1. make sure you have all latest drivers (check manufacturer sites)
2. DO NOT EXCEED 1.55V, you could kill your chip.
3. turn off LLC
4. test different voltages with your clocks to see what gets the card stable.

it will be time consuming but you will be rewarded in the end
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