This question first originated here: https://www.experts-exchange.com/questions/29053053/CPU-running-at-100-after-memory-upgrade.html
All the HW details can be found there.
I had used CL5 RAM on a motherboard that took CL6 RAM. We assumed the processor was doing 100% because of this, and that it couldn't handle the full 8 GB that the mainboard was supposed to be able to take.
So I bought new 8 G B of memory, this time CL6 from here: https://www.ebay.com/itm/For-Kingston-8GB-PC2-6400-4-x-2GB-Desktop-Memory-DDR2-800Mhz-240pin-CL6-DIMM-RAM/222696177816?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m2749.l2649
But I still have the same problem. When all 8GB are installed, the CPU goes up to 100%, when I remove one memory stick and am left with 6 GB the CPU operates normally. Suggestions?
Makes me wonder if something is broken in the motherboard.
With all together 8GB of CL5 ram (see the first link) + 2 x 1 GB of the same RAM from before and now 8 GB of CL 6 RAM (all together 18 GB), I wonder what I am going to do with all that RAM that I apparently can't use. I will have to look for motherboards that can take these memory specs. Any suggestions?