https://noctua.at/en/noctua-standardised-performance-rating
That 88 is NSPR(The Noctua Standardised Performance Rating) value. Not actual TDP in watts. Noctua put down a formula to calculate NSPR in the same page.
L12S supports medium OC/turbo headroom for i7 12700/13700 and i5 13400/13500 and...