| From: Lennart Sorensen via talk <talk@gtalug.org> | https://www.crucial.com/compatible-upgrade-for/lenovo/thinkcentre-m75s-gen-2... | would certainly work. It is listed as compatible, it is 3200 DDR4, | it is 1.2V. No silly XMP profiles involved. So such memory does exist, | but it is not very common. Most ram just ups the voltage using XMP | profiles to get the higher speeds. You need really good chips to run | 3200 at 1.2V. Thanks. I wandered around from there. Next stop ca.pcpartpicker.com I cranked various parameters. The key ones: - speed: at least 2300 - voltage, min and max: 1.2 I got to <https://ca.pcpartpicker.com/products/memory/#ff=ddr4&b=ddr4&S=3200,8000&Z=8192001&E=0&sort=price&B=1200000000> I ignored the entries without prices -- I assumed that they would be hard to finde. The latencies were all the same. I chose <https://ca.pcpartpicker.com/product/Pkyqqs/crucial-64-gb-2-x-32-gb-ddr4-3200-memory-ct2k32g4dfd832a> That was the second cheapest but it was the cheapest from a vendor I have experience with -- in this case Amazon.ca. Amazon.ca would sell me one that had been returned for $10 less but I would always wonder why it had been returned. PCPartPicker.com might well have missed some options but I am really weary of the hunt.