The modular design of the HP Z640 allows the user to configure the workstation as a single or dual processor system. Adding a second processor module allows for a second CPU, as well as four additional memory slots (for a total of eight DIMM slots). This is pretty impressive for such a compact workstation.

One of the most important features of the Z640 workstation is its compatibility with HP's Z Turbo Drive G2 (256GB, 512GB and 1TB capacities), as the NVMe drives provide some pretty significant performance gains over standard high-performing SSDs. This includes: faster boot up, calculation, and graphics response times. It also allows for ideal work conditions under resource-heavy applications, adding a ton of versatility and power to the Z640. HP has also upgraded the storage offering in the Z640, with the new Z Turbo Drive G2 offering maximum sequential read and write throughput up to 2.5GB/s and 1.55GB/s. Moreover, the HP Z640 supports up to 8 memory DIMMs with a maximum 256GB of DDR4 RAM, and can be equipped with two next generation Intel Xeon processors for up to 44 total processor cores in one system.