The is a mainstream x86 thin client designed for task workers, virtual desktop environments (VDI), and cloud-based computing. Released as a successor to the popular t630 and a contemporary to the more powerful t740, the t640 strikes a balance between performance, power efficiency, and cost. It is aimed at sectors like healthcare, finance, education, and call centers where centralized management, security, and hardware longevity are critical.

However, HP has layered additional protections onto the hardware. The t640 includes HP’s proprietary technology, a self-healing BIOS. If the BIOS is corrupted by a malware attack (such as a rootkit), Sure Start detects the change and automatically restores the last known good version of the BIOS during the boot process. This hardware-level protection operates independently of the operating system, providing a foundational layer of security that software-only solutions cannot match. Additionally, the device supports Trusted Platform Module (TPM) 2.0, ensuring secure encryption of keys and certificates, which is essential for securing remote connections.

Furthermore, the device is constructed with sustainability in mind. It utilizes post-consumer recycled plastics and is EPEAT Gold registered and ENERGY STAR certified. Its durability also contributes to a longer lifecycle; with no moving fans in some configurations (though the t640 does utilize a fan for the Ryzen processor), the wear and tear on components is minimized, reducing electronic waste.