Just wanted to show a simple table comparison regarding CPU, memory, storage, I/O and cost for each Windows Azure VMs (Compute Instances).

Compute Instance Size

CPU

Memory

Instance Storage

I/O Performance

Cost per hour

Extra Small

1.0 GHz

768 MB

20 GB

Low

$0.05

Small

1.6 GHz

1.75 GB

225 GB

Moderate

$0.12

Medium

2 x 1.6 GHz

3.5 GB

490 GB

High

$0.24

Large

4 x 1.6 GHz

7 GB

1,000 GB

High

$0.48

Extra large

8 x 1.6 GHz

14 GB

2,040 GB

High

$0.96