Perbedaan ESP-01 vs ESP-01S

DIFFERENCES BETWEEN ESP-01 AND ESP-01S

Hi there,

I wish to ask, what is the difference between ESP-01 and ESP-01S modules (except one LED diode and the corresponding resistor)?

Thank you! 

The changes I've come across so far are:

ESP-01 (blue PCB) vs ESP-01S (black PCB)
- 512kB flash vs 1MB flash 
- Red power LED vs -No- power LED
- Blue LED on TX vs Blue LED on GPIO2 (low = on)