ERROR: ILLEGAL SUMOUT on prime95 during overclocking

[MaxTehLegend]

i have a second PC build with an FX 8320 and ASUS Sabertooth 990FX R2. and ive been messing around with overclocking to compare with my other build. during overclocking i noticed after 23 minutes of prime95 i got an error on one of the cores saying "ERROR: ILLEGAL SUMOUT". my overclock settings are:
Core Speed: 4.8GHz
Multiplier: x 23.0 ( 7- 23 )
Bus Speed: 200MHz
PCIe Bus Frequency: 100MHz
HT Link: 2400MHz
Core Voltage: 1.464V (under load)
DRAM frequency: 1866MHz (Maxium Motherboard RAM Frequency)
NB Frequency: 2400MHz
Max CPU Temp under load on HWMonitor: 58c

AMD Turbo core: Disabled
CPU Spread Spectrum: Disabled
PCIe Spread Spectrum: Disabled
EPU Power Saving Mode: Disabled
CPU & NB voltage Mode: Manual
CPU Manual Voltage: 1.425V (boosts to 1.464V under load)
CPU NB Manual Voltage: 1.2V
CPU VDDA Voltage: 1.7V
DRAM Voltage: Auto (1.6V)
NB Voltage: Auto (1.1V)
NB HT Voltage: Auto (1.2V)
NB 1.8V Voltage: Auto (1.2V)
SB Voltage: Auto (1.1V)

DIGI+ Power Control all settings default

CPU Configuration

Cool'n'quiet: Disabled
C1E: Disabled
SVM: Disabled
Core C6 State: Disabled
HPC Mode: Enabled
AMP Master Mode: Disabled

PC Specs:

Motherboard: ASUS Sabertooth 990FX R2.0
CPU: FX 8320
CPU Cooler: BeQuiet! Dark Rock Pro 3 Twin Heatsink
GPU: EVGA GTX 980Ti SuperClocked+ ACX 2.0+
RAM: Hyper Savage DDR3 2400MHz RAM 4x4GB 16GB
Power Supply: Corsair Enthusiast RM750X

any help would be appreciated. thanks

 

[genthug]

Means you need to increase voltage if able to. If you are unable to further increase voltage due to either A) thermal constraints or B) voltage constraints, this means you need to back off the overclock of the chip to get it to be stable.

 

[MaxTehLegend]

Means you need to increase voltage if able to. If you are unable to further increase voltage due to either A) thermal constraints or B) voltage constraints, this means you need to back off the overclock of the chip to get it to be stable.

oh just increase the voltage? oh ok cool, thanks