4.51 The life of IT PFI contracts is typically shorter than that of PFI projects in other sectors, with IT projects typically lasting ten years, and other PFI projects lasting 15 to 30 years. The expected life of an IT project's assets is typically even shorter than the contract duration, with the consequence that the contractor is expected to undertake significant asset refresh during the course of the project. For example, in a desktop outsourcing IT PFI project, the outsourcer will typically replace a procuring authority's PCs and servers more than once over a ten-year contract. In non-IT PFI projects, most assets typically will be useful for the whole life of the contract.