The Processing Power of an Elektronika 60

Hi all,

This is for an essay and I need to know the processing power of an Elektronika 60 (the machine used to make the very first Tetris - according to my research).

It doesn't list its CPU... instead, it has these specs wherever I look:

* Word length: 16 bit
* Address space: 32K-words (64KB)
* RAM size: 4K-words (8KB)
* Number of instructions: 81
* Performance speed: 250,000 operations per second
* Floating point capacity: 32 bit
* Number of VLSI chips: 5
* Board dimensions: 240 × 280mm

Is there even a way to know its processing power?

Thanks