Hello,
I've got an RIVBE with an Intel i7-4920K and a single 4x8 kit of Kingston Hyper-X Beast 2400 CL11 DDR3 (on the QVL, KHX24C11T3K4/32X). I've got the system on Bench now with a Corsair H100. I've had some trouble getting this far into the build, but I'll put that down to being rusty; its my first build in about 5 years. I've got an OCZ 600SXS2 PSU (600W).
Everything is hooked up and seems to test and work fine. I've gone through each DIMM in Slot D1 and they all test ok individually. I've then gone to add a DIMM into B1 and only 8GB is detected. If I add a stick to C1, it detects fine. I can fully populate D1/2 and C1/2 and all 32GB shows up and gets through a full memtest pass fine. If I put anything in A or B, they don't detect.
Now these two pairs of channels are powered separately; I can see this in ROG Connect/TweakIT. Could the issue be PSU related? I'm on my second RIVBE for different reasons, but the first had the same symptoms also, I just didn't get as far testing it. I've re-seated the CPU, installed slowly, levelled the screws carefully on the H100 in the recommend pattern (cross shape, 1/2 turn each screw, only finger tight) I've been over the socket; I can't see any bent pins and couldn't previously on the first board either.
All of the above is done at BIOS defaults. After reading a lot of these forums, I'm probably being paranoid building this system. What I would really like to know, is anyone's opinion on the possible next step. I think I have two options:
1. PSU is under spec. Its close to calculator limits and is a few years old; Its running ok, the voltage seems fine in ROG Connect and I'm not overclocking or loading it; Its running with an AMD 5850 as a pure bench/testing card for now.
2. CPU problem. I would personally expect a CPU issue to be a bit more general; unsure why, but I guess it could be a duff controller?
Thoughts? Advice? Its about 8 weeks into me first receiving some of these bits, several replacements and lots of working away have gone on so its dragging on; I'd really like to get using instead of trying to build this thing...
#Edit. Despite checking, I still managed to misreport. Channels A and B are not detecting. C and D work fine.