I recently got a nice deal on a pair of X9DR3-LN4F+ systems. I've been testing them out in my spare time over the last week and noticed some memory related issues. Before I contact the seller I got them from, I just want to verify that my troubleshooting is sound.
The system came populated with 8x 4GB DIMMs = 32GB total with 2x E5-2630v1. It was 4 DIMMs per CPU, each DIMM using the 1st slot of each channel. This configuration boots up just fine.
I then added more DIMMs to fill up all 24 slots and the system would not complete POST. It just showed a message "System initializing ... B7". From my searches, this indicates a RAM module related error. So, I removed everything and went down to a 4x DIMM per CPU (8x DIMM total) configuration again; this booted up fine. So I added another set of DIMMS for 8x DIMM per CPU (16x DIMM total) configuraiton, and this booted up fine. When I added a 3rd set for 12x DIMM per CPU (24x DIMM total), I get the POST stuck at "B7" again.
In case my DIMMs were bad, I carefully took out the last 8 DIMMs, confirmed it would complete POST again, and then swapped the 8 DIMMs from the last set, with the DIMMs in the 2nd set. This also completed POST just fine; so I don't suspect any of the 8 DIMMs from the 3rd set are obviously bad.
On the motherboard, the DIMM slots are labeled like this:
P1=processor 1, P2=processor 2
P1C1
P1C2
P1C3
P1D1
P1D2
P1D3
(CPU1 sits between)
P1B3
P1B2
P1B1
P1A3
P1A2
P1A1
P2E1
P2E2
P2E3
P2F1
P2F2
P2F3
(CPU2 sits between)
P2H3
P2H2
P2H1
P2G3
P2G2
P2G1
Basically, if I populate A3,B3,D3,C3,E3,F3,H3,G3, I get the stuck at "B7" problem.
Can I populate a subset of the A3-G3 slots to further narrow down which slot might be having the issue? Is it likely I have a bad DIMM slot on this motherboard? Or, is there something particular about populating A3-G3 that requires a certain RAM module configuration (rank x devices?) to work properly?
By the way, I'm using DDR3 PC3-10600 ECC Registered DIMMs... other than the spec just mentioned, they are not exactly all identical (mostly 2Rx, some 1Rx, varying between 2GB,4GB,8GB). But I've been able to swap them in several permutations without error as long as I don't touch A3-G3 slots.
Thoughts?
The system came populated with 8x 4GB DIMMs = 32GB total with 2x E5-2630v1. It was 4 DIMMs per CPU, each DIMM using the 1st slot of each channel. This configuration boots up just fine.
I then added more DIMMs to fill up all 24 slots and the system would not complete POST. It just showed a message "System initializing ... B7". From my searches, this indicates a RAM module related error. So, I removed everything and went down to a 4x DIMM per CPU (8x DIMM total) configuration again; this booted up fine. So I added another set of DIMMS for 8x DIMM per CPU (16x DIMM total) configuraiton, and this booted up fine. When I added a 3rd set for 12x DIMM per CPU (24x DIMM total), I get the POST stuck at "B7" again.
In case my DIMMs were bad, I carefully took out the last 8 DIMMs, confirmed it would complete POST again, and then swapped the 8 DIMMs from the last set, with the DIMMs in the 2nd set. This also completed POST just fine; so I don't suspect any of the 8 DIMMs from the 3rd set are obviously bad.
On the motherboard, the DIMM slots are labeled like this:
P1=processor 1, P2=processor 2
P1C1
P1C2
P1C3
P1D1
P1D2
P1D3
(CPU1 sits between)
P1B3
P1B2
P1B1
P1A3
P1A2
P1A1
P2E1
P2E2
P2E3
P2F1
P2F2
P2F3
(CPU2 sits between)
P2H3
P2H2
P2H1
P2G3
P2G2
P2G1
Basically, if I populate A3,B3,D3,C3,E3,F3,H3,G3, I get the stuck at "B7" problem.
Can I populate a subset of the A3-G3 slots to further narrow down which slot might be having the issue? Is it likely I have a bad DIMM slot on this motherboard? Or, is there something particular about populating A3-G3 that requires a certain RAM module configuration (rank x devices?) to work properly?
By the way, I'm using DDR3 PC3-10600 ECC Registered DIMMs... other than the spec just mentioned, they are not exactly all identical (mostly 2Rx, some 1Rx, varying between 2GB,4GB,8GB). But I've been able to swap them in several permutations without error as long as I don't touch A3-G3 slots.
Thoughts?