oh, leave dram vref at its default value
Darn, sometimes that works.
Seems the two are not meshing well. Those modules were not tested by Gigabyte, so they are not guaranteed to be compatible by Gigabyte. You would have to call Corsair and ask if they should be compatible. If so, it is possible the RAM you received was defective or had an ESD attack.
You may find Avoid Static Damage to Your PC | PCWorld
interesting further reading as to why RAM problems can occur. It basically says that ~400 Volts of electrostatic discharge (ESD) can ruin RAM, but you will not feel the discharge until it reaches ~1400-3500 Volts (that link says 3500-4000 Volts, but it varies based on the climate and how dry it is). When RAM receives a shock that we cannot feel, it can work for a while, and then slowly fail over time until symptoms become noticeable. That is one of the many reasons why so many users end up on these forums wondering why their systems are suddenly not working.
So for future reference, make sure you practice good electrostatic discharge (ESD) habbits and keep yourself grounded when touching PC components.
For ESD Safety, follow these steps:
- Shut down and turn off your computer.
- Unplug all power supplies to the computer (AC Power then battery for laptops, AC power for desktops)
- Hold down the power button for 30 seconds to close the circuit and ensure all power drains from components.
- Make sure you are grounded by using proper grounding techniques, i.e. work on an anti-static workbench, anti-static desk, or an anti-static pad. Hold something metallic while touching it to the anti-static surface, or use an anti-static wristband to attach to the anti-static material while working.
Once these steps have been followed, it is safe to remove and replace components within your computer.