VPS 4 has KVM virtualization with 50GB disk space and 1GB memory and 1TB monthly traffic on a 1GB/s connection and one IPv4 and no IPv6
The specs are rather good for my uses, I use around ~700 MB of ram usually which is I limit by controlling software, The Disk I/O could be better but It's acceptable by me.
ALL TESTS DONE ON A FRESH DEBIAN (8) OS
For some reason, the network speed appears to be worse than a mobile while the server has a 1GB/s connection
The Disk speed obviously could be better but it hasn't caused any major problems... yet.
The speed test from Paris shows good results:
I hosted an apache web server temporarily on my VPS although the RAM usage went through the roof, The web site loaded pretty quickly (even better with mod_pagespeed).
Performance-wise it was OK since I could add/remove SWAP at any time.
The HOST4Fun control panel was a bit bugged (it refused to log in on mobile) but apart from that it was rather easy to set the thing up, they still lack the ubuntu 16.04 x86_64 ISO at the time of writing, however.
Reliability wise, I think that this VPS is best used with a CDN and a cache for web hosting otherwise it's pretty reliable.
I currently use my VPS for docker projects and docker OSes and docker in dockers
The hard drive space is very good for normal usage and I have never had a problem with it (as in storage space).
I feel that the Disk I/O could be better but I assume that would be very hard for the providers to do.
I think that this a great VPS and I would definitely recommend this VPS to all users.
I am not going to give a rating but the reader summarise by this post.
Thanks for reading.