GPUBoss - Researching the perfect graphics card for your next gaming rig can be a time consuming process.
GSMArena - GSMArena is an online site that offers exhaustive and up and coming cell phone data.
Kimovil - Compare price, specs, reviews and benchmarks for smartphones and tablets.
Productz.com - Crowdsourced products database
Will my phone work - The site answers the question, will my mobile phone work with a certain mobile carrier?
Graphiq - Vivid, contextually-rich visualizations of the world's deepest knowledge graph.