https://creativemarket.com/miim/1475223-Color-Cubes-3D-Lettering

Hi-res 3D letter renders from small colorful cubes (3000x3000 - but letter size is around 1500x2000). Great for your headers, posters, advertisments - any web or print projects. You'll find here also layered PSD file with 10 effets (shadows, effects...) - just replace letter in smart object and you'll see letter in all 10 effects.