TESTED - good. pulled from working desktop.The Crucial 8GB DDR4 2133MHz PC4-17000 2Rx8 DIMM Desktop Memory RAM (CT8G4DFD8213) is a high-quality memory module designed for desktop computers. With a total capacity of 32GB spread across four modules, each module is 8GB in size and has a frequency of 2133MHz. The memory is non-ECC unbuffered and has a voltage of 1.2V. It is manufactured by Crucial, a reputable brand known for reliable memory products, and comes with a lifetime warranty. The memory module is compatible with desktop machines and has a form factor of DIMM, with 288 pins for easy installation.