Bars, atmospheres and home machines

Hi! I'm looking to buy a new espresso machine for home and am having a hard time finding the psi (bars, atmospheres?) info for different machines. I've got a Starbucks "Barista" machine and was thinking about replacing it with a "Rancilio Silvia". From what I understand, a commercial machine does about 10 bars (130 psi). Anybody know what my STBX Barista psi is? Or the Rancilio Sivlia"? Thanks

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