Cloud Mercato tested CPU performance using a range of encryption speed tests:
Cloud Mercato's tested the I/O performance of this instance using a 100GB General Purpose SSD. Below are the results:
I/O rate testing is conducted with local and block storages attached to the instance. Cloud Mercato uses the well-known open-source tool FIO. To express IOPS the following parametersare used: 4K block, random access, no filesystem (except for write access with root volume and avoidance of cache and buffer.
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Amazon EC2 M5 instances are the latest generation of General Purpose Instances powered by Intel Xeon® Platinum 8175M processors. This family provides a balance of compute, memory, and network resources, and is a good choice for many applications.

The M7 instances have a slight speed advantage even though the overall specification is the same with 2vCPU and 8GB of memory.

The m5 instance type is similar, but for more consistent workloads. It has a nice balance of CPU, memory, and disk.

The m5 instance type is similar, but for more consistent workloads. It has a nice balance of CPU, memory, and disk. It’s not hard to see why almost half of EC2 workloads [are on “m” instances].