Dive Computer Discrepancies {[Don’t Be Afraid Of Decompression]} 

Another reason for differences is the electronic components. Different computers will use different capacitors (either different brands or just a different batch from the same brand), that alone would introduce 1-2% difference, multiply that by 20-30 other components. Although some differences will cancel out, overall, it's basically impossible to have 2 different electronic devices match perfectly.

As always another great video with on point analysis and information. Thanks

My right wrist is half a degree warmer than my left wrist and my computers often register different depths, especially if I'm on my side or reaching for something. But about decompression, agreed: don't be scared. It happens. The important thing is to know what that new display on your computer means and to know what to do next. ie, don't panic, and don't rush for the surface. I've heard people do. Your computer telling you you're in deco is not by itself an emergency.