itwbennett writes: When unknown television maker Seiki released the world’s cheapest 4K TV, many programmers jumped at the opportunity to gain a cheap 4K monitor. Early reports touted vast screen real estate and sharp picture as a massive productivity boost for developers. So when ITworld's Matt Mombrea saw a 50” Seiki 4K TV for $429, he had to give it a try. Consider this your chance to learn from his mistakes: Despite tweaking every possible thing there was to tweak, the TV still made for a sub-standard monitor — it was slow and laggy with a noticeable flickr. As a TV, though, it's just fine.