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FX-8120 ILLEGAL SUMOUT, help please?

post #1 of 24
Thread Starter 
Hi guys, I have been playing with my shiny new 8120 at the moment and I have run into a problem. I have been able to get it to a nice healthy 4.8 testing with IBT. However, at any speed above 4.4 I get the error "ILLEGAL SUMOUT" on 2 threads. Does anyone know what this may mean and how best to fix it? Your help is appreciated!
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post #2 of 24
Instability.

If its giving the incorrect answer to a sum, then its not stable.
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post #3 of 24
Thread Starter 
I am aware of that, it's just that it is only presented as an error and I more wanted to know if it indicates any part of the system in particular.
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My System
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i7 3770K 4.7GHz @ 1.27v ASRock Z77E-I Gigabyte GTX 780 8GB G.Skill Ares (2x4GB @ 1866MHz OC'd to 2133) 
Hard DriveHard DriveCoolingOS
Crucial M4 128GB WD Black 2.5" 750GB Custom Water Windows 8 x64 Pro 
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post #4 of 24
Quote:
Originally Posted by DirektEffekt;15484646 
I am aware of that, it's just that it is only presented as an error and I more wanted to know if it indicates any part of the system in particular.

Your CPU mate.
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post #5 of 24
If its consistently doing it on the same two threads, then is possibly because they dont clock as well as the others. If bulldozer chips let you, you could disable them or clock them lower than the others.
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none Xonar DG and logitech X-540 Beyer DT770 PRO 
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post #6 of 24
Quote:
Originally Posted by alltoasters;15484672 
If its consistently doing it on the same two threads, then is possibly because they dont clock as well as the others. If bulldozer chips let you, you could disable them or clock them lower than the others.

That or add moar volts.

Also sometimes CPU's just hit a brick wall and won't O'C past.
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post #7 of 24
How much vcore at 4.4GHz 8-core load with out getting one or two "errored" cores while stressing?

Try bumping multi by .5 or bumping up the cpu bus by ~ 2/3 with slight increase(s) to vcore to find 8 core stress stability again.
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post #8 of 24
Thread Starter 
Quote:
Originally Posted by PolRoger;15485466 
How much vcore at 4.4GHz 8-core load with out getting one or two "errored" cores while stressing?

Try bumping multi by .5 or bumping up the cpu bus by ~ 2/3 with slight increase(s) to vcore to find 8 core stress stability again.

The most annoying thing for me is that the "ILLEGAL SUMOUT"'s are just technically "warnings" but they occur repeatedly causing to to fail. I have to push about 1.4v at load to avoid the errors, but I can go to higher clocks with those same voltages and run LinX for hours without any errors which is really annoying. I'd hate to have a bad module on the chip and honestly I'm feeling like just calling LinX stable and putting the p95 results down as "odd". Also, I have heard that F@H can be used as a stress test and is much more sensitive. How? If that is true I think I would feel safe being F@H stable.
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i7 3770K 4.7GHz @ 1.27v ASRock Z77E-I Gigabyte GTX 780 8GB G.Skill Ares (2x4GB @ 1866MHz OC'd to 2133) 
Hard DriveHard DriveCoolingOS
Crucial M4 128GB WD Black 2.5" 750GB Custom Water Windows 8 x64 Pro 
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My System
(14 items)
 
  
CPUMotherboardGraphicsRAM
i7 3770K 4.7GHz @ 1.27v ASRock Z77E-I Gigabyte GTX 780 8GB G.Skill Ares (2x4GB @ 1866MHz OC'd to 2133) 
Hard DriveHard DriveCoolingOS
Crucial M4 128GB WD Black 2.5" 750GB Custom Water Windows 8 x64 Pro 
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post #9 of 24
same thing here.

4.6GHz needs ......1.3375V(LinX)......1.38125V(Prime95)
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FX-8320 Gigabyte 990FXA-UD7 Sapphire HD6970 1600 11-11-11-28 
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OCZ Vertex3 120Gb Heatkiller 3.0, GTX140 + GTX120 Seasonic Gold X650 Lian Li PC-7FN 
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post #10 of 24
Thread Starter 
Quote:
Originally Posted by IOSEFINI;15485921 
same thing here.

4.6GHz needs ......1.3375V(LinX)......1.38125V(Prime95)

What board is that on? I need way more voltage than you, I either got a dud chip or you got a good one!
My System
(14 items)
 
  
CPUMotherboardGraphicsRAM
i7 3770K 4.7GHz @ 1.27v ASRock Z77E-I Gigabyte GTX 780 8GB G.Skill Ares (2x4GB @ 1866MHz OC'd to 2133) 
Hard DriveHard DriveCoolingOS
Crucial M4 128GB WD Black 2.5" 750GB Custom Water Windows 8 x64 Pro 
MonitorPowerCase
Dell U2711 (2560*1440) SilverStone 550W Bitfenix Prodigy 
  hide details  
Reply
My System
(14 items)
 
  
CPUMotherboardGraphicsRAM
i7 3770K 4.7GHz @ 1.27v ASRock Z77E-I Gigabyte GTX 780 8GB G.Skill Ares (2x4GB @ 1866MHz OC'd to 2133) 
Hard DriveHard DriveCoolingOS
Crucial M4 128GB WD Black 2.5" 750GB Custom Water Windows 8 x64 Pro 
MonitorPowerCase
Dell U2711 (2560*1440) SilverStone 550W Bitfenix Prodigy 
  hide details  
Reply
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