What feature of NVDIMMs differentiates them from other memory technologies?

The defining feature of NVDIMMs (Non-Volatile Dual In-line Memory Modules) that sets them apart from other memory technologies is their ability to retain data even after a power loss. This non-volatility is made possible by integrating flash memory or other non-volatile storage technology with traditional DRAM components.

When a system experiences unexpected power loss, standard memory technologies such as DRAM would lose all stored data, but NVDIMMs can maintain the information, allowing for a quicker recovery and continuation of processes without data loss. This characteristic is particularly advantageous in scenarios that demand high reliability and data integrity, such as in enterprise environments where data consistency is crucial.

The other features, such as power efficiency, cost, and cooling requirements, while important, do not distinctively define NVDIMMs in the same way that their non-volatile storage capability does.