2 elements are fuzzy:
- clock speed is way different from 3.5GHz to 2.6. This can lead to huge differences in some computations and no new instruction set can compete against brute force.
- changing between those 2 cpus is not just a socket swap but a full platform change: can we get the other details of the 2 platforms ?
There is pithos [1] from the Exoscale [2] and powers the production system. A new version of the open source project with API signature v4 and other updates is due out soon.
To address your partiality to Swiss products, check out Exoscale for a similar (5$) simple experience with advanced features in Datacenters in Geneva, Zurich, Vienna and Frankfurt. https://www.exoscale.com
Snapshots and copy of those snapshots which are often offered are not true backup solutions. Then most providers tend to offer an integrated or not panel to have traditional backup agent alongside external storage capacity to copy those backups too.
Almost everyone here suggest Object Storage which I too think is the best option for your case. Then you can modulate computing power or even technology (VPS, cloud instance, PaaS, or containers) as you will.
Some providers like us (I am CEO at Exoscale) bill the compute by the minute and allow to resize the direct attached disk even on small 5$/mo 512mb instances.
You also have http://rancher.com/ which makes it pretty easy and has deployment options on local hosts, bare metal or cloud providers (AWS, DO, Exoscale,...)
There are offerings that are less complex than AWS but still offer nice features like an object storage for example. This can come in handy with tools like S3MD or else.
Nice table, it provides a good overview of what is available. I would suggest also to add the protocol (S3, Swift,...) used and coverage by libs/languages.
[1] https://community.exoscale.com/api/sos/#s3-incompatibilities
disclaimer: co-founder at Exoscale