hydramd.exe is a MultiDesk
from ATI Technologies Inc.
belonging to ATI Technologies Inc. HydraVision Viewport
. It uses multiple desktops to let you work with multiple documents without cluttering your desktop. Disabling or enabling it is down to user preference.
Non-system processes like hydramd.exe originate from software you installed on your system. Since most applications store data in your system's registry, it is likely that your registry has suffered fragmentation and accumulated invalid entries which can affect your PC's performance. It is recommended that you check your registry to identify slowdown issues