Pretty much any platform with a hardware jpeg encoder beats libjpegturbo. So probably all smart phones, large scale CPUs, even tiny few $ microcontrollers like ESP32's have hardware encode/decode that outperforms libjpegturbo.
Not that libjpeg-turbo is pinnacle of quality but hardware encoders, seriously?
Then, if you care to learn, there are extremely high quality, lkely far beyond old software like libjpeg-turbo, use in DoD projects, satellites, medical imaging systems, commercial cameras systems, and plenty of companies that sell such chips and IP to embed in ones own ASIC. There is zero technical problem taking an opensource project, turning that exact code into an ASIC or VHDL one can put into any ASIC, an so the best ideas are reused in hardware all the time.
Alma Technologies, CAST, intoPIX all sell such cores that are integrated throughout the industry, embedded everywhere, and can be bought with an ever improving host of features.