Questions about GIGABYTE products > X99 Motherboards

X99-UD4 endless boot cycle, ram to blame?

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wobble64:
Hello.

Just put together a new server, specs are:

Board: X99-UD4 rev 1.0

CPU: Intel Xeon e5-2620v3

Graphics: Asus 1GB HD-6450

Ram: 2x8GB Crucial CT8G4RFS4213.18FA2

Power supply: Enermax xt-730


Problem is not unknown: it never shows the BIOS screen, instead rebooting endlessly, staying on 5-15 seconds at a time. I unplugged all unneeded connections (i.e. front panel USB, audio and hard drives).

I also tried unplugging the graphics card (currently in PCI slot 1), switching the two 8gb ram modules (ram is in slot 3) and using Q-Flash plus to install a new BIOS (I tried all versions) and checked if any CPU pins had been bent, also not the case.

I just noticed in the Gigabyte manual that when using RDIMM ram it should be "1Rx8" rank. I was unaware of this requirement at time of purchase and the label on my ram modules reads: "8bg DDR4 - 2133 1.2v SR x4 RDIMM" which I guess means it is x4 and not x8.

Is it reasonable to assume that the ram is to blame? I don't have another module to test with, so would have to send it back and get the recommended kind before I could know for sure.

Anybody have any experience with this?

EDIT: At first I also tried unplugging power, resetting CMOS and leaving it a few days which also did not help.

qwerty:
Going through the exact same thing with 2400 RAM (i checked the compatibility list, should be fine).

I installed using 1 DIMM, two DIMMS works although not 4 :(

Its hard for me to memtest/swap parts out as they're all brand new. I'm going to update BIOS this evening and tinker with RAM configurations, i'll let you know how it goes.

dmdilks:
This is what I used to get things running till I got the G Skill memory. Crucial 8GB (2 x 4GB) 288-Pin DDR4 2133 (PC4-17000) Model # CT2K4G4DFS8213

http://www.newegg.com/Product/Product.aspx?Item=N82E16820148858

I'm running the G.SKILL Ripjaws 4 series 16GB (4 x 4GB) 288-Pin DDR4 SDRAM DDR4 2133 Model # F4-2133C15Q-16GRR.

http://www.newegg.com/Product/Product.aspx?Item=N82E16820231784

dmdilks:
I was looking at you memory. You have the wrong memory you have ECC memory. You should be running Non-ECC memory

http://www.memorysolution.de/Produkte/Arbeitsspeicher/DDR4/DDR4-2133%20ECC%20REG/8GB%20Crucial%20DDR4-2133%20CL15%20(1Gx4)%20ECC%20reg.%20SR%7CD4B8GCR2133A15.pdf

wobble64:
I spoke to Gigabyte support and they stated the same, that x4 ram is not supported, they sent me the Intel-Table below. I believe x8 RDIMM would also be fine, but I am sticking with non-ECC UDIMM this time.

Thanks for your help.

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