Ws2803 vs Ws2812b --

hello, I've been playing with leds ws2812b this chip controller is embedded with LED, but its speed is very slow, compared with ws2803, this has SPI.

is there any chip with the performance of Ws2803, but it is embedded in the led?

Not that I am aware of. Most LED strips for example use a chip to control 1,2,3 LEDs, and buffer the controls to pass on to the next chip in line. WS2812 is unique in that the control is integrated with the LED.