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January 19th, 2022 14:00
PCIe Lane Issue?
Hello all,
I have an Optiplex 5060 with two PCIe slots. I have 16 gig(2x8) of memory installed, in dual channel mode. If I install two 4 port PCIe NIC cards the system only reports 8 gig of memory. In order to have the system see the 16 gig of memory I have to install the memory in single channel mode.
My question is could I be running out of PCIe lanes to handle all of this? If I swap one of the 4 port NIC cards with a 2 port NIC card the system does see the 16 gig of memory in dual channel mode. This is what is leading me to running out of PCIe lanes. Dell tech support is not helpful, as they say it’s a mboard problem.
Thanks,
Steve
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tibi500cid
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January 19th, 2022 22:00
It's a longshot, I don't know if this is the cause for You, but once I had a problem with my Optiplex 7070MT. The system did not see two identical rams as dual channel, only single channel.
After a lot of troubleshooting it turned out that 3 of the CPU pins were bent. A local professional guy swapped the 3 CPU pins to new ones for "peanuts" and the system turned back to working perfectly ever since. This was almost 2 years ago and the PC is still running 24/7 flawlessly...
In Your case it might be something different though...