English 
The NVIDIA® Quadro® K620 graphics card with 2 GB of dedicated memory allows you to achieve impressive performance when working with 3D modeling and resource-intensive data sets.
Functions
Easy to support professional software applications through comprehensive certification of independent software vendors. DDR3 memory of 2 GB provides smooth operation with 3D-modeling and operations with data packets.
A high-performance, low-profile 3D graphics solution that does not require additional power, takes only one slot and is installed in most workstation enclosures (including the entire HP Z line).
NVIDIA® Mosaic and NVIDIA® nView® technologies allow ultra-high resolution monitors (for example, 4096 x 2160 with 60 GHz frequency and 30-bit color depth) to be used and easily managed.
The NVIDIA Quadro K620 graphics card (2 GB) is supported on the following HP Z: Z230 CMT, Z440, Z640, Z840 workstations