I confirm. I had a machine similar to that one up to 18 month ago. It was fast enough to develop web applications (Rails, JavaScript). The only problem was the RAM limit at 4 GB. I replaced it with a ZBook 15 with 16 GB RAM. It's faster, so doing the same kind of work becomes more convenient, but the main advantage is not to have to close some programs to start another one. That's particularly handy when working with virtual machines or multiple browsers.