Just want to double check if your CPU and it's socket are fine... - are they?
OK, so the 1.5V is the memory voltage, the 9-9-9-24 are the memory timings.
In the GPU DIMM POST says only that the base frequency of the RAM is 1333MHz, but your is running at 1600MHz (as it should).
Here is what I would suggest you:
Set the Ai Tweaker at "Manual" instead of "XMP" as it is now.
Double check the Memory Frequency to be at "DDR3-1600MHz"
Go lower and set the VDIMM (memory voltage) to "1.5V" (it's below the CPU voltage or Vcore)
The go to memory timings and manually introduce those numbers from your modules 9-9-9-24, let everything else on "Auto"
Hit F10 and Enter, and see if it gives you the same error code (don't worry at this point, it should)
If it gives you the same error 55, go back to BIOS and start increasing the memory voltage (VDIMM) by one notch and try booting. I believe, you should be fine before or when you hit 1.65V...
Let us know, how it goes...