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New EC2 instance types

Amazon just announced two new High-CPU instance types for EC2. Here’s a quick comparison of what you can now get compared to the previous offering:
2x Small ($0.20/hr)
RAM – 3.4GB
CPU – 2 Compute Units*
DISK – 320GB
High-CPU Medium ($0.20/hr)
RAM – 1.7GB
CPU – 5 Compute Units*
DISK – 350GB

Extra Large ($0.80/hr)
RAM – 15GB
CPU – 8 Compute Units*
DISK – 1690GB
High-CPU Extra Large ($0.80/hr)
CPU – 20 Compute Units*
DISK – 1690GB

So it really looks like a tradeoff between CPU and RAM. If you run more CPU intensive processes, then these new instance types may save you money.

*One EC2 Compute Unit (ECU) provides the equivalent CPU capacity of a 1.0-1.2 GHz 2007 Opteron or 2007 Xeon processor.