Sysmetrix can pull almost everything it needs to work from your operating system or from the internet. The things that it can not pull from the OS are fan speeds and temperatures, because Windows provides no way to measure or fetch that data. Therefore, you need a software interface (in this case, MotherBoard Monitor) to measure and report the fan rpm's and temp's as well as the CPU temp. If you are not going to use themes with displays for the speeds and temps, then you won't need Mother Board Monitor. DesktopX has absolutely nothing to do with Sysmetrix.