EC2 Instance Types (table format)

It's little hard to compare instance type with the original page. I format as to be comparable using table. This information is quoted based on the page at 2012/09/07.

Standard Instances

Small Instance – default++	Medium Instance	Large Instance	Extra Large Instance
1.7 GB memory 1 EC2 Compute Unit (1 virtual core with 1 EC2 Compute Unit) 160 GB instance storage 32-bit or 64-bit platform I/O Performance: Moderate EBS-Optimized Available: No API name: m1.small	3.75 GB memory 2 EC2 Compute Unit (1 virtual core with 2 EC2 Compute Unit) 410 GB instance storage 32-bit or 64-bit platform I/O Performance: Moderate EBS-Optimized Available: No API name: m1.medium	7.5 GB memory 4 EC2 Compute Units (2 virtual cores with 2 EC2 Compute Units each) 850 GB instance storage 64-bit platform I/O Performance: High EBS-Optimized Available: 500 Mbps API name: m1.large	15 GB memory 8 EC2 Compute Units (4 virtual cores with 2 EC2 Compute Units each) 1,690 GB instance storage 64-bit platform I/O Performance: High EBS-Optimized Available: 1000 Mbps API name: m1.xlarge

Micro Instances

Micro Instance
613 MB memory Up to 2 EC2 Compute Units (for short periodic bursts) EBS storage only 32-bit or 64-bit platform I/O Performance: Low EBS-Optimized Available: No API name: t1.micro

High-Memory Instances

High-Memory Extra Large Instance	High-Memory Double Extra Large Instance	High-Memory Quadruple Extra Large Instance
17.1 GB of memory 6.5 EC2 Compute Units (2 virtual cores with 3.25 EC2 Compute Units each) 420 GB of instance storage 64-bit platform I/O Performance: Moderate EBS-Optimized Available: No API name: m2.xlarge	34.2 GB of memory 13 EC2 Compute Units (4 virtual cores with 3.25 EC2 Compute Units each) 850 GB of instance storage 64-bit platform I/O Performance: High EBS-Optimized Available: No API name: m2.2xlarge	68.4 GB of memory 26 EC2 Compute Units (8 virtual cores with 3.25 EC2 Compute Units each) 1690 GB of instance storage 64-bit platform I/O Performance: High EBS-Optimized Available: 1000 Mbps API name: m2.4xlarge

High-CPU Instances

High-CPU Medium Instanc	High-CPU Extra Large Instance
1.7 GB of memory 5 EC2 Compute Units (2 virtual cores with 2.5 EC2 Compute Units each) 350 GB of instance storage 32-bit or 64-bit platform I/O Performance: Moderate EBS-Optimized Available: No API name: c1.medium	7 GB of memory 20 EC2 Compute Units (8 virtual cores with 2.5 EC2 Compute Units each) 1690 GB of instance storage 64-bit platform I/O Performance: High EBS-Optimized Available: No API name: c1.xlarge

Cluster Compute Instances

Cluster Compute Quadruple Extra Large Instance	Cluster Compute Eight Extra Large Instance
23 GB of memory 33.5 EC2 Compute Units (2 x Intel Xeon X5570, quad-core “Nehalem” architecture) 1690 GB of instance storage 64-bit platform I/O Performance: Very High (10 Gigabit Ethernet) EBS-Optimized Available: No API name: cc1.4xlarge	60.5 GB of memory 88 EC2 Compute Units (2 x Intel Xeon E5-2670, eight-core "Sandy Bridge" architecture) 3370 GB of instance storage 64-bit platform I/O Performance: Very High (10 Gigabit Ethernet) EBS-Optimized Available: No API name: cc2.8xlarge

Cluster GPU Instances

Cluster GPU Quadruple Extra Large Instance
22 GB of memory 33.5 EC2 Compute Units (2 x Intel Xeon X5570, quad-core “Nehalem” architecture) 2 x NVIDIA Tesla “Fermi” M2050 GPUs 1690 GB of instance storage 64-bit platform I/O Performance: Very High (10 Gigabit Ethernet) EBS-Optimized Available: No API name: cg1.4xlarge

High I/O Instances

High I/O Quadruple Extra Large Instance
60.5 GB of memory 35 EC2 Compute Units (16 virtual cores) 2 SSD-based volumes each with 1024 GB of instance storage 64-bit platform I/O Performance: Very High (10 Gigabit Ethernet) Storage I/O Performance: Very High EBS-Optimized Available: No API name: hi1.4xlarge