The G-Series, now available in the West Europe region, provides more memory and more local solid-state drive (SSD) storage than other Azure virtual machines (VMs). In addition, the G-Series delivers unparalleled computational performance by using the Intel Xeon processor E5 v3 family, which is ideal for your most demanding applications.
A G-Series variant, the GS-Series now supports Premium storage across the East US 2, West US, and West Europe regions. GS-Series VMs enable resource-intensive applications with the fastest processors, the most memory, and the highest input/output operations per second (IOPS) (for storage disk performance compared to any other series). For more information, please visit the Azure Virtual Machines