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Slow POST/Windows boot with 12GB upgrade on DX58SO (IOH/QPI voltages)

I recently upgraded my DX58SO to 12GB RAM from 6GB. Once installed, it took upwards of 30+ seconds to POST and then another 20+ to boot Windows 7.

It wasn't until I upped my IOH Core and QPI/Uncore voltage that things seemed to return to normal (quick POST, fast Windows 7 boot time).

 

Can anyone confirm that my voltage and timing settings are appropriate for my system? Everything appears to be in order and the system seems stable, but I wanted to be certain I wasn't setting something incorrectly.

 

Thank for your help!

Memory:

 

Corsair Vengeance CMZ12GX3M3A1600C9 12GB (3x4GB) 1600MHz, 9-9-9-24, 1.5V XMP

Motherboard:

 

Product Name DX58SO

 

Version AAE29331-702

 

BIOS Version SOX5810J.86A.5561.2011.0516.2023

Images of my current BIOS settings:

 

http://imgur.com/a/cMK73# 0 http://imgur.com/a/cMK73# 0

The two settings I had to modify for stability:

 

IOH Core Voltage Override: 1.250

 

QPI/Uncore Voltage: 1.350
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