F5F Stay Refreshed Power Users Overclocking Needs ongoing adjustment of VCCIO or system agent voltage to successfully complete POST with XMP memory configurations

Needs ongoing adjustment of VCCIO or system agent voltage to successfully complete POST with XMP memory configurations

Needs ongoing adjustment of VCCIO or system agent voltage to successfully complete POST with XMP memory configurations

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Scra3mITout
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04-06-2025, 02:23 AM
#1
To achieve the rated performance of my memory through XMP configurations, adjustments to the "system agent voltage" and "VCCIO voltage" were necessary. The issue I’m facing appears to be that raising these voltages allows the system to pass the initial POST, but later attempts fail, requiring further increases. I’m worried this could indicate damage that needs resolution by boosting the voltage during a subsequent boot. Is this a recognized problem?

Currently, XMP is turned off, which keeps my memory underclocked. Previously, I successfully posted at VCCIO/SA 1.12 V and 1.16 V, but later encountered failures even at 1.16 V/1.18 V. The BIOS displays a red warning for VCCIO voltages exceeding 1.09 V, which makes me cautious about continuing to raise the voltage.

Operating system: Windows 10 Pro 64-bit
Mainboard: ASUS Z170 Pro Gaming, board revision 1.04, BIOS v3501
CPU: Intel i7 6700, Stock HSF, Undervolt Offset -0.075 V, VCCIO 1.16 V, System Agent 1.15 V, LLC 4 (all core enhancement DISABLED)
RAM: Corsair LPX Vengeance 2x8GB DDR4-3000 (CMK16GX4M2B3000C15), XMP
Graphics: Gigabyte NVIDIA GeForce GTX 950 w/ 2 GB
Sys Drive: Samsung Evo 750 SSD, 250 GB
Data Drives: OCZ Vertex 2 SSD, 60 GB; WDC WD1002FAEX-00Y9A0, ~1 TB; WDC WD2003FZEX-00Z4SA0, ~2 TB; WDC WD2002FAEX-00MJRA0, ~2 TB; RAID 0, ~300 GB [Maxtor 6B160MO x 2]
PCI-E SATA expansion: IOCREST SATA III 4-port PCI-e (SI-PEX40064)
Power supply: XFX TS 750W (P1-750S-NLB9)
Bluetooth: Parani UD100 Bluetooth USB Adapter
Display: LG 21.5" W2246S-BF 16:9 Wide LCD Monitor 1920x1080 5ms
Mouse: Logitech G500, Keyboard: K120
UEFI BIOS differs from the optimised defaults
AI Overclock Tuner [Auto]->[XMP]
DRAM Frequency [Auto]->[DDR4-3000 MHz]
Min. CPU Cache Ratio [Auto]->[40]
Max CPU Cache Ratio [Auto]->[40]
CPU Core/Cache Voltage [Auto]->[Offset Mode] (-0.075)
CPU VCCIO Voltage [Auto]->[1.09 V]
CPU System Agent Voltage [Auto]->[1.05 V]
DRAM Voltage [Auto]->[1.350]
DRAM CAS# Latency [Auto]->[15]
DRAM RAS# to CAS# Delay [Auto]->[17]
DRAM RAS# Act Time [Auto]->[35]
CPU Load-line Calibration [Auto]->[Level 4]
SATA Mode Selection [AHCI]->[RAID]
Model Name LED Lighting [Breathing Mode]->[Disabled]
SupremeFX LED Lighting [Breathing Mode]->[Disabled]
CPU Q-Fan Control [Auto]->[PWM Mode]
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S
Scra3mITout
04-06-2025, 02:23 AM #1

To achieve the rated performance of my memory through XMP configurations, adjustments to the "system agent voltage" and "VCCIO voltage" were necessary. The issue I’m facing appears to be that raising these voltages allows the system to pass the initial POST, but later attempts fail, requiring further increases. I’m worried this could indicate damage that needs resolution by boosting the voltage during a subsequent boot. Is this a recognized problem?

Currently, XMP is turned off, which keeps my memory underclocked. Previously, I successfully posted at VCCIO/SA 1.12 V and 1.16 V, but later encountered failures even at 1.16 V/1.18 V. The BIOS displays a red warning for VCCIO voltages exceeding 1.09 V, which makes me cautious about continuing to raise the voltage.

Operating system: Windows 10 Pro 64-bit
Mainboard: ASUS Z170 Pro Gaming, board revision 1.04, BIOS v3501
CPU: Intel i7 6700, Stock HSF, Undervolt Offset -0.075 V, VCCIO 1.16 V, System Agent 1.15 V, LLC 4 (all core enhancement DISABLED)
RAM: Corsair LPX Vengeance 2x8GB DDR4-3000 (CMK16GX4M2B3000C15), XMP
Graphics: Gigabyte NVIDIA GeForce GTX 950 w/ 2 GB
Sys Drive: Samsung Evo 750 SSD, 250 GB
Data Drives: OCZ Vertex 2 SSD, 60 GB; WDC WD1002FAEX-00Y9A0, ~1 TB; WDC WD2003FZEX-00Z4SA0, ~2 TB; WDC WD2002FAEX-00MJRA0, ~2 TB; RAID 0, ~300 GB [Maxtor 6B160MO x 2]
PCI-E SATA expansion: IOCREST SATA III 4-port PCI-e (SI-PEX40064)
Power supply: XFX TS 750W (P1-750S-NLB9)
Bluetooth: Parani UD100 Bluetooth USB Adapter
Display: LG 21.5" W2246S-BF 16:9 Wide LCD Monitor 1920x1080 5ms
Mouse: Logitech G500, Keyboard: K120
UEFI BIOS differs from the optimised defaults
AI Overclock Tuner [Auto]->[XMP]
DRAM Frequency [Auto]->[DDR4-3000 MHz]
Min. CPU Cache Ratio [Auto]->[40]
Max CPU Cache Ratio [Auto]->[40]
CPU Core/Cache Voltage [Auto]->[Offset Mode] (-0.075)
CPU VCCIO Voltage [Auto]->[1.09 V]
CPU System Agent Voltage [Auto]->[1.05 V]
DRAM Voltage [Auto]->[1.350]
DRAM CAS# Latency [Auto]->[15]
DRAM RAS# to CAS# Delay [Auto]->[17]
DRAM RAS# Act Time [Auto]->[35]
CPU Load-line Calibration [Auto]->[Level 4]
SATA Mode Selection [AHCI]->[RAID]
Model Name LED Lighting [Breathing Mode]->[Disabled]
SupremeFX LED Lighting [Breathing Mode]->[Disabled]
CPU Q-Fan Control [Auto]->[PWM Mode]

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xAndersalsdux
Member
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184
04-06-2025, 02:23 AM
#2
Hey there, Seanspotatobusiness. I faced a problem with XMP after updating my BIOS. The method I tried might be useful: Unknowns. HTH
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xAndersalsdux
04-06-2025, 02:23 AM #2

Hey there, Seanspotatobusiness. I faced a problem with XMP after updating my BIOS. The method I tried might be useful: Unknowns. HTH

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