At least the article points out that this is a Wall Street valuation, meaning it's meaningless in reality, the company doesn't have that much money, nor is it actually worth that much. In reality, Nvidia's tangible book value (plant, equipment, brands, logos, patents, etc.) is $37,436,000,000.
$37,436,000,000 / 29,600 employees = $1,264,729.73 per employee
Which isn't bad considering the median salary at Nvidia is $266,939 (up 17% from last year).