Citrix have released a Windows 8.1 Optimization Guide for VDI which is a very useful read. The savings encountered by performing these optimisations are considerable. In summary the savings vs a non optimised image are below. You can find a link to the download here – http://blogs.citrix.com/2014/03/03/new-windows-8-and-8-1-optimization-guide/?utm_source=feedburner&utm_medium=email&utm_campaign=Feed%3A+CitrixBlogs+%28Citrix+Blogs%29
| Metric | Default | Optimized | % Gain |
| Hypervisor Level Total CPU % Run Time | 55% | 42% | 24% |
| Context Switches | 201,000 | 177,000 | 12% |
| Disk MB Total/Sec | 9.6 | 8.4 | 13% |
| Disk Transfers/sec | 634 | 595 | 6% |
| VM Network Traffic (Mbps) | 120 | 92 | 23% |
| VN Level Available memory (MB( | 458 | 644 | 40% |
| Memory Pages/Sec | 19.4 | 15.2 | 22% |