Today Microsoft announced it added two new virtual machine sizes to Microsoft Azure. Those are available both in the Azure IaaS and PaaS offering (web and worker roles).
These two sizes name A8 and A9 provide faster processors, faster interconnect, more virtual cores for higher compute power, larger amounts of memory. These instances include an additional 40Gbit/s InfiniBand network that provides remote direct memory access (RDMA) technology for maximum efficiency of parallel MPI applications. This combination of features make these instances optimal for running compute and network intensive applications such as high performance cluster applications, applications using modeling, simulation and analysis, video encoding etc. Detailed configurations of these instances are available.
A8 has 8 virtual cores and 56 GB of virtual memory
A9 has 16 virtual cores and 112 GB of virtual memory.
Both are available immediately. However A8 and A9 Vm’s can only be created using PowerShell at the moment. Creation using the Azure Management Portal will be available in the coming weeks.
More info here.