The sentence 'He has speed' is a correct and usable in written English. You could use this sentence when describing someone's skills or qualities, for example: "He has speed, agility and power, which makes him a formidable opponent on the track".
But he has speed.
He has speed and power.
He has speed for hydro generators.
He has speed, and he has heart.
He has speed, power and agility.
He has speed, athleticism and game-breaking abilities.
He has speed-climbed back into the top four in the world, and is the No. 3 seed here after the withdrawal of Andy Murray because of a back injury.
He has speeded inventory turnover.
He had speed, power and style.
If only he had "speed and technique" too.
"I drafted him because he had speed, quickness, body strength and had a chance to be an excellent defender.
I love the desktop app, it’s always running on my Mac. Ludwig is the best English buddy, it answers my 100 queries per day and stays cool.
Cristina Valenza
Retail Lead Linguist @ Apple Inc.