With Optoma's Extreme Black technology (which allows the laser to turn completely off with a full black image), rated contrast ratio is 300,000:1. The blue laser passes through a phosphor wheel and a 4-segment RGBY color wheel, then bounces off a single Texas Instruments 0.65-inch 1080p DMD chip. The laser produces a published light output of 4,200 ANSI lumens (400 more than the GT1080HDR), which is more than enough for use in a room that isn't fully light controlled. For end users that means minimal maintenance and no need to switch out a lamp every few thousand hours. It signifies a long-life light source (at least 20,000 hours in Normal and up to 30,000 hours in Eco) and at least an IPX5 rating, meaning the optics are protected from dust. DuraCore is the name Optoma has been using for its laser technology since 2017, originally for their professional line of projectors. Instead of a lamp, the GT1090HDR uses Optoma's DuraCore laser technology. The biggest change over the GT1080HDR is the light source. Add in higher light output while keeping 4K HDR capability, low input lag, and (with a firmware upgrade this past summer) 120Hz refresh rate at 1080p, and the GT1090HDR looks really good on paper for anyone in the market for a gaming projector. And while the GT1080HDR is almost half the price, when you figure in the cost of five $150 replacement lamps, it's basically a wash. That's five times the lamp life of the similarly featured GT1080HDR at full power. The light source has a minimum life of 20,000 hours in Bright mode. And that's what we get with the $1,399 GT1090HDR-one of Optoma's first laser light source projectors aimed at gamers. Unlike trickle-down economics, trickle-down technology actually happens. One of the great things about technology marching forward is that once out-of-reach tech makes it into products for the masses. The initial cost is higher, but in the long run it’s a better choice for many of the same features combined with a maintenance-free, long-life solid-state light source. One of Optoma’s first laser gaming projectors, the GT1090HDR is an improvement over the already good GT1080HDR.
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