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OC problem with GA-990FX UD5

post #1 of 8
Thread Starter 
Hello,

I just got my 8350 and got it to boot into windows by multiplier and 1.55 volts ( roughly, dont remember exact volts ). However when I hit LOAD under prime, volts drop like woah! maybe to 1.4v something then PC freezes.

I know it's called vdrop, but how do I stable out the cpu now with that vdrop?


I actually used up to 1.6v to try and compensate for vdrop under load. but computer still freezes instantly when i hit start on prime95.

Do I need to try something else to try get it stable now ?
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
AMD PHENOM 1090T @ 4.2ghz GA-990FXA UD5 2X SAPHIRE 6990 G.SKILL 16GB 1600 
Hard DriveOptical DriveOSMonitor
CRUCIAL M4 256GB SSD DVD/BURNER WINDOWS 7 64BIT ASUS LCD 23" 
KeyboardPowerCaseMouse
LG BRAND , CHEAPY CORSAIR AX1200 ROSEWILL MODIFIED LOGITEC MX518 
Mouse Pad
ICEMAT 
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My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
AMD PHENOM 1090T @ 4.2ghz GA-990FXA UD5 2X SAPHIRE 6990 G.SKILL 16GB 1600 
Hard DriveOptical DriveOSMonitor
CRUCIAL M4 256GB SSD DVD/BURNER WINDOWS 7 64BIT ASUS LCD 23" 
KeyboardPowerCaseMouse
LG BRAND , CHEAPY CORSAIR AX1200 ROSEWILL MODIFIED LOGITEC MX518 
Mouse Pad
ICEMAT 
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post #2 of 8
Quote:
Originally Posted by yappy View Post

Hello,
I just got my 8350 and got it to boot into windows by multiplier and 1.55 volts ( roughly, dont remember exact volts ). However when I hit LOAD under prime, volts drop like woah! maybe to 1.4v something then PC freezes.
I know it's called vdrop, but how do I stable out the cpu now with that vdrop?
I actually used up to 1.6v to try and compensate for vdrop under load. but computer still freezes instantly when i hit start on prime95.
Do I need to try something else to try get it stable now ?
What rev is your ud5? If it's not 1.0 then use LLC at like high. Also you might want to try intelburntest instead of prime95, some people are saying there may be incompatibilities with piledriver and prime95.

And maybe try cpu pll voltage at 2.695v, it helped me get my cpu voltage down a bit.
post #3 of 8
Thread Starter 
It's rev 1.0 , no LLC .
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
AMD PHENOM 1090T @ 4.2ghz GA-990FXA UD5 2X SAPHIRE 6990 G.SKILL 16GB 1600 
Hard DriveOptical DriveOSMonitor
CRUCIAL M4 256GB SSD DVD/BURNER WINDOWS 7 64BIT ASUS LCD 23" 
KeyboardPowerCaseMouse
LG BRAND , CHEAPY CORSAIR AX1200 ROSEWILL MODIFIED LOGITEC MX518 
Mouse Pad
ICEMAT 
  hide details  
Reply
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
AMD PHENOM 1090T @ 4.2ghz GA-990FXA UD5 2X SAPHIRE 6990 G.SKILL 16GB 1600 
Hard DriveOptical DriveOSMonitor
CRUCIAL M4 256GB SSD DVD/BURNER WINDOWS 7 64BIT ASUS LCD 23" 
KeyboardPowerCaseMouse
LG BRAND , CHEAPY CORSAIR AX1200 ROSEWILL MODIFIED LOGITEC MX518 
Mouse Pad
ICEMAT 
  hide details  
Reply
post #4 of 8
Quote:
Originally Posted by yappy View Post

It's rev 1.0 , no LLC .
That sucks, you'll have to deal with the vdroop then sadly, meaning you'll have to set insanely high voltages. And try the above suggestion still.

Oh and try upping the nb and cpu/nb volts a couple notches or so.
post #5 of 8
Thread Starter 
Ok thanks, will try
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
AMD PHENOM 1090T @ 4.2ghz GA-990FXA UD5 2X SAPHIRE 6990 G.SKILL 16GB 1600 
Hard DriveOptical DriveOSMonitor
CRUCIAL M4 256GB SSD DVD/BURNER WINDOWS 7 64BIT ASUS LCD 23" 
KeyboardPowerCaseMouse
LG BRAND , CHEAPY CORSAIR AX1200 ROSEWILL MODIFIED LOGITEC MX518 
Mouse Pad
ICEMAT 
  hide details  
Reply
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
AMD PHENOM 1090T @ 4.2ghz GA-990FXA UD5 2X SAPHIRE 6990 G.SKILL 16GB 1600 
Hard DriveOptical DriveOSMonitor
CRUCIAL M4 256GB SSD DVD/BURNER WINDOWS 7 64BIT ASUS LCD 23" 
KeyboardPowerCaseMouse
LG BRAND , CHEAPY CORSAIR AX1200 ROSEWILL MODIFIED LOGITEC MX518 
Mouse Pad
ICEMAT 
  hide details  
Reply
post #6 of 8
Thread Starter 
increasing the cpu pll voltage is no good.
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
AMD PHENOM 1090T @ 4.2ghz GA-990FXA UD5 2X SAPHIRE 6990 G.SKILL 16GB 1600 
Hard DriveOptical DriveOSMonitor
CRUCIAL M4 256GB SSD DVD/BURNER WINDOWS 7 64BIT ASUS LCD 23" 
KeyboardPowerCaseMouse
LG BRAND , CHEAPY CORSAIR AX1200 ROSEWILL MODIFIED LOGITEC MX518 
Mouse Pad
ICEMAT 
  hide details  
Reply
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
AMD PHENOM 1090T @ 4.2ghz GA-990FXA UD5 2X SAPHIRE 6990 G.SKILL 16GB 1600 
Hard DriveOptical DriveOSMonitor
CRUCIAL M4 256GB SSD DVD/BURNER WINDOWS 7 64BIT ASUS LCD 23" 
KeyboardPowerCaseMouse
LG BRAND , CHEAPY CORSAIR AX1200 ROSEWILL MODIFIED LOGITEC MX518 
Mouse Pad
ICEMAT 
  hide details  
Reply
post #7 of 8
Thread Starter 
After increasing CPU VOLTS to 1.66v. to help compensate voltage drop ( should be around 1.56-1.60v on drop during prime95 ). computer still freezes instantly when opening prime95. So I am guessing, it may not be that i need more voltage but something else to help stable it?

I tried increasing the CPU PLL all the way up to 2.695v , no change at all.

I tried increasing CPU NB volt up to 1.4750v , no luck either.

does NB frequency and HT frequency affect it?


What else should I try?

Also just in case if anyone needed to know, I have good cooling. (1) 3fan radiator , (1) 2 fan radiator , (1) passive radiator (4 tube cape cora ).
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
AMD PHENOM 1090T @ 4.2ghz GA-990FXA UD5 2X SAPHIRE 6990 G.SKILL 16GB 1600 
Hard DriveOptical DriveOSMonitor
CRUCIAL M4 256GB SSD DVD/BURNER WINDOWS 7 64BIT ASUS LCD 23" 
KeyboardPowerCaseMouse
LG BRAND , CHEAPY CORSAIR AX1200 ROSEWILL MODIFIED LOGITEC MX518 
Mouse Pad
ICEMAT 
  hide details  
Reply
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
AMD PHENOM 1090T @ 4.2ghz GA-990FXA UD5 2X SAPHIRE 6990 G.SKILL 16GB 1600 
Hard DriveOptical DriveOSMonitor
CRUCIAL M4 256GB SSD DVD/BURNER WINDOWS 7 64BIT ASUS LCD 23" 
KeyboardPowerCaseMouse
LG BRAND , CHEAPY CORSAIR AX1200 ROSEWILL MODIFIED LOGITEC MX518 
Mouse Pad
ICEMAT 
  hide details  
Reply
post #8 of 8
Quote:
Originally Posted by yappy View Post

After increasing CPU VOLTS to 1.66v. to help compensate voltage drop ( should be around 1.56-1.60v on drop during prime95 ). computer still freezes instantly when opening prime95. So I am guessing, it may not be that i need more voltage but something else to help stable it?
I tried increasing the CPU PLL all the way up to 2.695v , no change at all.
I tried increasing CPU NB volt up to 1.4750v , no luck either.
does NB frequency and HT frequency affect it?
What else should I try?
Also just in case if anyone needed to know, I have good cooling. (1) 3fan radiator , (1) 2 fan radiator , (1) passive radiator (4 tube cape cora ).
Like I said, try intelburntest as there may be incompatibilities with piledriver cpus and prime95.
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