EC2 Instance Types

EC2 offers a variety of 32-bit and 64-bit instance types.  Be sure to choose a size that best meets your requirements:

• Standard Instances - Best if you are running an application on a server and will have more CPU Memory. Standard Instances are broken up into first generation (M1) and second generation (M3) instances. First generation instances come at a lower cost but also provide less processing performance. Second generation standard instances provide high CPU and memory performance and are best suited for high traffic content management systems, encoding, and memcaching.
• Micro Instances - Provides a small amount of consistent CPU resources that can increase CPU capacity in small burst. Best suited if you want lower throughput for applications and websites.
• High-Memory Instances - Best if you have memory-intensive, high throughput workloads like databases, memory caching, and rendering.
• High-CPU Instances - Best for your compute-level intense applications that will require more CPU resources than memory (RAM).
• Cluster Compute Instances - Provides increased network-performance for High Performance Compute (HPC) applications.
• Cluster GPU Instances - Through the use of parallel computing power, provides low latency and high throughput to increase application performance.
• High I/O Instances - Best for database workloads (provides high levels of CPU, memory, and network performance).
   

See Amazon's EC2 Instance Types for the current instance pricing structure. You can also use the Simple Monthly Calculator to estimate your usage costs.