Hi "Hello People", I suggest you do not celebrate too early... I have been battling with the same issues you have for the last 3 weeks with no joy
Like yourself I am a Cakewalk Sonar user and was intending to use this mother board for audio processing. I was also planning on NOT overclocking and running the memory at the default 1066 (as specified for the i7 950).
My system setup is as follows:
CPU - Intel i7 950
Mobo - Gigabyte GA-X58A-UDR3 rev2
RAM - Corsair 6 GB kit TR3X6G1600C9 (which is 3x CM3X2G1600C9)
System Hard Disk - Western Digital WD3000HLFS Veloraptor 300 GB
Data Hard Disk - 2x Western Digitial WD50000AAKS Caviar Blue 500 GB (configured as RAID 1 mirror to store audio data)
Graphics - 2x Gigabyte GV-R455D3-512I (ATI HD 4550 Silent)
Cooler - Noctua NH-U9B SE2
OS - Windows 7 Home Premium 64-bit
Here is the history of what I have done:
1. Built the system with shipped bios FA and default bios settings. This appeared to run fine for a week while I was sorting out the device drivers and installing all my software and testing out windows compatibility issues doing a dress rehearsal build. Did not have a single BSOD during this phase.
2. Started a completely new installation with all the right drivers and software apps. It was at this point in time I noticed that the use-able memory varied between 2, 4 or 6 GB. I then flashed the bios to FB. This is when my cold boot BSOD issues started.
I have tried all the things you have:
a. Ran Memtest86 on each DIMM separately and all together - have never had a single error reported. Last run of all three DIMMs in for 4 passes running for 3.5 hours - still no errors. The memory is on Corsair's recommended list for this motherboard.
b. Checked for bent pins on the LG1366 and found one. In the process of photographing it the fabric strap of my camera feel onto the socket and got snared on it. In the process of freeing it I bent another pin! WORD OF WARNING - if photographing the CPU socket make sure you remove your camera strap first and keep everything clear of the pins. I have managed to straighten both pins. There appear to be no issues with this now.
c. Tried using XMP profile1 - no success
d. manual settings at 1066 MHz, DRAM 1.65 v and QT/VTT voltages of 1.315v - no success
e. I have tried both optimised and fail-safe bios settings.
The symptoms are the same as yours: I always get a memory related BSOD on cold booting (if PC has been switched off for several hours/overnight). Once it has been running for about 15-30 mins the BSODs stop and the system stabilises and then runs fine for several hours OK. No manner of BIOS settings seems to make any difference.
3. I then tried flashing to the FC1 beta bios. This resulted in the graphics card in PCI-Express x16-2 going either blank or completely blue! Also the OS starting grinding to a halt and was useable. There were the odd BSODs.
4. I flashed the BIOS back to FA and retested. No BSODs, but useable RAM varies.
5. I then flashed the BIOS to FB and retested. The BSODs came back!! Tried all manner of settings with no joy.
I submitted a ticket to Gigabyte support on Thursday, but they have not even read the message yet!
I have been using Gigabyte products for over 15 years and am very disappointed by the quality of this motherboard.
I am convinced that this is an issue with the BIOS and not the memory. How can all three bios FA, FB and FC1 all behave so differently?
Dark Mantis do you have any further suggestions?