Question: Can I tell by looking through the viewfinder? Well, funnily enough, not necessarily! In theory a pentamirror is darker but design improve all the time and a good pentamirror may out perform a bad pentaprism.
Dell Unveils its Lightest, Smallest and Most Power-Efficient Entry-level Thin Client - Wyse 3040 -- Industry's first entry-level Intel x86 quad-core thin client designed for light multitasking in virtual desktop environments -- Designed for efficiency with 30 percent better performance than previous generations -- Robust connectivity options with superb performance and dual high-definition DisplayPort interfaces PR Newswire ROUND ROCK, Texas, March 29, 2017 ROUND ROCK, Texas ...
Also, though Norton's detection rate is very good, it isn't the best: Avira's Premium Security Suite took top honors again this year in identifying both known and unknown malware. What's more, you'll have to pay for the best. At $70 for three PCs, Norton was the second-most-costly suite we tested; only Kaspersky Internet Security 2009 cost more, at $80 for three users. If you want the best all-around security, buy the Norton suite.