Continuing the EC2 instance evolution from my last article about expansion of T2 instance size let’s discuss about newly memory optimized EC2 instances. In-memory processing is a demand of these days computing. With workloads growing larger and larger and CPUs gaining power with every successive generation, the ability to fit complete datasets into memory is becoming a prerequisite for high-quality analytics, data mining, Business Intelligence and other real-time applications that require very low latency.

AWS has launched the next generation of memory-optimized EC2 instances. These instances improve upon the popular R3 instances with a larger L3 cache and faster memory. When we talk about network optimization, they support up to 20 Gbps of ENA-powered network bandwidth when used within a Placement Group in combination with 12 Gbps of dedicated throughput to EBS.

The R4 instances include the following features:

  • Dual socket Intel Xeon E5 Broadwell Processors (2.3 GHz)
  • DDR4 memory
  • Hardware Virtualization (HVM) only

Here’s the lineup:

Model vCPUs Memory (GiB) Networking Performance
r4.large 2 15.25 Up to 10 Gigabit
r4.xlarge 4 30.5 Up to 10 Gigabit
r4.2xlarge 8 61 Up to 10 Gigabit
r4.4xlarge 16 122 Up to 10 Gigabit
r4.8xlarge 32 244 10 Gigabit
r4.16xlarge 64 488 20 Gigabit


Currently the R4 instances are available in On-Demand and Reserved Instance form in the US East (Northern Virginia),US East (Ohio), US West (Oregon), US West (Northern California), EU (Ireland), EU (Frankfurt), Asia Pacific (Sydney), China (Beijing), and AWS GovCloud (US) Regions. AWS will add support for regions with time and make resources available all over the globe.

There are many new improvements AWS is innovating with EC2 instances. In my next blog, I will try to cover up most of them, Till that time keep innovating…!!!


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