I understand as much, the problem is not with the memory configuration. We're using 4GB in each of the 6 DIMM slots which is a supported configuration and was completely functional at one point.
All of the RAM has been tested, and we've even replaced some of the motherboards. Somehow, putting the machine back in a box and leaving it on a shelf for a few weeks made the issue go away. I don't think I can recommend that step to my customer though. :emotion-1:
Memory Type: DDR3 PC3-12800 Maximum Memory: 24GB Slots: 6
T3500 memory configurator SR=Single Rank DR = Dual Rank
You cannot mix and match
It is important to ensure that DIMMs with appropriate number of ranks are populated in each channel for optimal performance. Whenever possible, it is recommended to use dual-rank DIMMs in the system. Dual-rank DIMMs offer better interleaving and hence better performance than single-rank DIMMs.
For instance, a system populated with six 2GB dual-rank DIMMs outperforms a system populated with six 2GB single-rank DIMMs by 7% for SPECjbb2005. Dual-rank DIMMs are also better than quad-rank DIMMs because quad-rank DIMMs will cause the memory speed to be down-clocked.
Another important guideline is to populate equivalent ranks per channel. For instance, mixing one single-rank DIMM and one dual-rank DIMM in a channel is not recommended.
I honestly don't know, I am sorry. I provided the instructions to my customer but never received feedback on the outcome and my contract expired soon afterward.
You cant mix and match multiple vendors and toss in joes crab shack ram and expect that it works fine. The voltage and cas speed and vendor must be Tri channel compatible aka sets of 3 not sets of 2.
lbarraugh
4 Posts
0
July 25th, 2014 13:00
I understand as much, the problem is not with the memory configuration. We're using 4GB in each of the 6 DIMM slots which is a supported configuration and was completely functional at one point.
All of the RAM has been tested, and we've even replaced some of the motherboards. Somehow, putting the machine back in a box and leaving it on a shelf for a few weeks made the issue go away. I don't think I can recommend that step to my customer though. :emotion-1:
speedstep
9 Legend
•
47K Posts
0
July 25th, 2014 13:00
Memory Should be Tri Channel compatible and matched sets and Rank. 24 Gigs is max with 6 dimms of 4gigs each.
Recommended Upgrade
DDR3 PC3-12800 • CL=11 • Unbuffered • NON-ECC • DDR3-1600 • 1.5V • 512Meg x 64 • • Part #: CT1418494
Maximum Memory: 24GB
Slots: 6
(GB)
Ranks
Mode
RoHe
10 Elder
•
45.2K Posts
0
July 25th, 2014 18:00
If sitting on the shelf for a few weeks fixed it, I wonder if the motherboard battery died during that time and BIOS got reset to factory defaults.
Try clearing BIOS on one of the other systems and see if that fixes the problem:
lbarraugh
4 Posts
0
July 29th, 2014 07:00
Thanks for the suggestion RoHe, I'll have my customer give it a whirl and will keep you posted on the results.
Cheers!
RoHe
10 Elder
•
45.2K Posts
0
July 29th, 2014 11:00
BTW: What version(s) of BIOS is installed on all these systems? Same version, different...? And what version(s) of Windows?
Let's hope clearing BIOS fixes this!
Mpmoraes
2 Posts
0
November 18th, 2015 05:00
Hi guys, I'm having the same problems with my machine. Did this reset procedure work?
lbarraugh
4 Posts
0
November 18th, 2015 12:00
I honestly don't know, I am sorry. I provided the instructions to my customer but never received feedback on the outcome and my contract expired soon afterward.
speedstep
9 Legend
•
47K Posts
1
November 20th, 2015 10:00
You cant mix and match multiple vendors and toss in joes crab shack ram and expect that it works fine. The voltage and cas speed and vendor must be Tri channel compatible aka sets of 3 not sets of 2.
You also cannot mix ranks.
http://www.ebay.com/itm/6GB-Patriot-Memory-PC3-12800-3-X-2GB-DIMM-DDR3-1600-MHz-CL-8-PX736G1600LLK-/171121340371