Expanding the M4 Instance Type – New M4.16xlarge

EC2's M4 instances offer a balance of compute, memory, and networking resources and are a good choice for many different types of applications.

We launched the M4 instances last year (read The New M4 Instance Type to learn more) and gave you a choice of five sizes, from large up to 10xlarge. Today we are expanding the range with the introduction of a new m4.16xlarge with 64 vCPUs and 256 GiB of RAM. Here's the complete set of specs:

Instance Name	vCPU Count	RAM	Instance Storage	Network Performance	EBS-Optimized
m4.large	2	8 GiB	EBS Only	Moderate	450 Mbps
m4.xlarge	4	16 GiB	EBS Only	High	750 Mbps
m4.2xlarge	8	32 GiB	EBS Only	High	1,000 Mbps
m4.4xlarge	16	64 GiB	EBS Only	High	2,000 Mbps
m4.10xlarge	40	160 GiB	EBS Only	10 Gbps	4,000 Mbps
m4.16xlarge	64	256 GiB	EBS Only	20 Gbps	10,000 Mbps

The new instances are based on Intel Xeon E5-2686 v4 (Broadwell) processors that are optimized specifically for EC2. When used with Elastic Network Adapter (ENA) inside of a placement group, the instances can deliver up to 20 Gbps of low-latency network bandwidth. To learn more about the ENA, read my post, Elastic Network Adapter – High Performance Network Interface for Amazon EC2.

Like the m4.10xlarge, the m4.x16large allows you to control the C states to enable higher turbo frequencies when you using just a few cores. You can also control the P states to lower performance variability (read my extended description in New C4 Instances to learn more about both of these features).

You can purchase On-Demand Instances, Spot Instances, and Reserved Instances; visit the EC2 Pricing page for more information.

Available Now
As part of today's launch we are also making the M4 instances available in the China (Beijing), South America (Brazil), and AWS GovCloud (US) regions.

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Jeff;