Ok so I already bought my rig, and got myself a nice quick BSOD relating to RAM - a memory management BSOD with parameter 1 of 0x41790 on this page: http://msdn.microsoft.com/en-us/library/ff557391 My RAM is G Skill F3-2400C10D-16GTX - and I got two of the kits making my RAM 32GB in total. Having received said BSOD (which clearly related to memory) I ran HCI Memtest Pro and have been greeted with quite a few errors. None when just one DIMM was installed (have tested all 4 sticks individually), one or two when I had two sticks in, and they're guaranteed when all 4 sticks are in. Now I didn't realise this RAM was only a 16GB kit, as in that there's no guarantee of full compatibility if you use 4 sticks of it to make 32GB. I checked out Gigabyte's memory compatibility list for this motherboard (aforementioned Z97X Gaming 3) and indeed this RAM is not listed as compatible at all, never mind in 4 sticks. However G Skill's configurator DID include this RAM under this motherboard. Which puts me in a conflicted mind. I am more inclined to trust Gigabyte's requirements than G Skill as it's G Skill trying to sell their RAM, and I have experienced errors in HCI Memtest with it and aforementioned BSOD. I am deciding between 16GB kit of G Skill that IS listed on Gigabyte's compatibility list for the board, and the 32GB kit they list, also G Skill. All 2400MHz. My question is this though: am I plain wrong? Should this RAM work happily as 32GB despite being designed as a 16GB kit? And who do I trust regarding potential replacement RAM? Gigabyte or G Skill? PS: Thanks for the help, and nice to join the board!