Name any major tech brand - from Google to Amazon to Tesla to ChatGPT - and the chances are Nvidia is involved in some way.The company - which makes computer chips - may not be a household name in the UK, but it has just leapfrogged Microsoft and Apple to become the most valuable public company in the world. It is now worth more than $3.3tn (£2.6tn) - with its share price up by almost 600,000$10,000 (£7,850) in the firm back ...