General Knoppix support for those who've read the FAQ at the Wiki
A-Tech 8GB DDR3 1600 PC3-12800 Laptop SODIMM 204-Pin Memory RAM PC3L DDR3L 1x 8G
$13.99
Crucial DDR3L 16GB 1600 2x 8GB PC3-12800 Laptop SODIMM Memory RAM PC3 16G DDR3
$22.50
Crucial DDR3L 16GB 1600 2x 8GB PC3-12800 Laptop SODIMM Memory RAM PC3 16G DDR3
$13.50
HyperX FURY DDR3 8GB 16GB 32GB 1600 MHz PC3-12800 Desktop RAM Memory DIMM 240pin
$16.50
A-Tech 8GB PC3-12800 Desktop DDR3 1600 MHz Non ECC 240-Pin DIMM Memory RAM 1x 8G
$13.99
16GB (2x8GB) SK Hynix 03A08-00022000 8GB DDR4 PC4-3200AA Desktop Memory RAM
$24.95
8gb DDR4 2400MHz Sodimms (kingston, SK Hynix, Samsung) Laptop/USFF Memory
$11.99
HyperX FURY RAM DDR4 16GB 8GB 32GB 4GB 3200 2666 2400 2133 Desktop Memory DIMM
$9.64
A-Tech 128GB 4x 32GB 2Rx4 PC4-21300R DDR4 2666 ECC REG RDIMM Server Memory RAM
$199.96
A-Tech 64GB 4x 16GB 2Rx4 PC4-17000R DDR4 2133MHz ECC REG RDIMM Server Memory RAM
$87.96