Hi Andy, I am not aware of any specifications, but as an example on a slow machine I can tell you that a 650 MHz Pentium 3 is adequate to run a rtl-sdr in SSB mode at a sampling rate of 1 MHz in Linrad. The CPU load is then 46% with a sine window and it is clear one could sample quite a bit faster. The dominating load on the CPU in Linrad is the overlapping first fft that is used for spectral display as well as for filtering and decimation. In case you do not need real-time spectra you can run the dongle with something like three times smaller cpu load.
I do not know how your 800MHz VIA compares to a 650 MHz Pentium 3 but I do not think you will have any problem reading the data from the dongle. Then, if there is cpu power enough tu use the data as you want is another story. The Pentium 3 is definitely too slow for wideband FM with Linrad. Cheers Leif SM5BSZ > > Is there specs anywhere on minimum CPU for RTL-SDR on Linux? > > I'm (trying to ) build a Linux-based HP5530 thin client (800MHz VIA CPU, > 128Mb RAM) to use with an RTL-SDR dongle. Is this viable, or am I wasting my > time? > > Cheers, > > Andy > ZL3AG > > On 10/04/2014, at 1:24 PM, Leif Asbrink wrote: > > > Hi All, > > > > The video is intended to give an idea about how to try different > > processing parameters to optimise performance of a RTL-SDR dongle > > in Linrad on a slow computer. > > > > 73 > > > > Leif / SM5BSZ > > > >
