Upscaling is decent thanks to Vizio’s IQ Ultra+ Processor and motion really wasn’t an issue. In Bright SDR mode, basically what you’d see out of the box if you didn’t change any of the other settings besides the picture mode, you’ll get around 500 nits of peak brightness. We tested the set using an X-Rite i1 Pro spectrophotometer, a SpectraCal VideoForge Pro pattern generator, and Portrait Displays’ Calman calibration software and encountered some strong results for a TV in this price range. The design might be a bit of a letdown, but the performance is every bit of what we’d expect from a mid-range 4K HDR TV and then some. Vizio M-Series Quantum X 50-inch Class review: Performance

One port with 4K/120Hz support is better than none, but we wish there were more ports with that spec. If you choose something bigger, you’ll lose out there - but don’t worry, there are some benefits that we’ll cover in the next section. That said, the 240Hz mode is limited to the 50-inch model. The true saving grace for the TV’s design, however, is the integration of HDMI 2.1 ports with one that can hit 4K/120Hz gaming and up to 240Hz when paired with a PC. It’s going to look better on a shelf than on your wall, because from the front there’s nothing to complain about. It’s a shame that this TV is so heavy for its size and bulky in the back.

Vizio m series rtings