CHAOS-THEORY:
emmm CMOS so that's where the bios is stored, useless to me.
but useful to other mobos
It's a 'generic' memory chip. There's nothing 'bios-specific' about it. The datasheet says 'CMOS and TTL Compatible Inputs and Outputs.'
I said CMOS because it came from a MB and in consumer-speak is typically called 'the CMOS' regardless of what the actual technology is.
It's probably obsolete - Digikey offers 25 items of various speeds and packages, but none of any type in stock. The 9738 is probably a date code (week 38 of 1997.)
It's useful in any memory application. If it was removed carefully from the MB it maybe-to-probably still works. You can plug it into any Arduino and have 128kx8 of local volatile memory. That's 128K not M so no it can't hold more than a fraction of a second of audio or -one- color pic larger than about 1"x1". 
128K is 4x standard Uno so for other kinds of data processing that's a -lot- of space. But uses up a lot of Uno pins. It would increase a Mega2560 by 50%, useful if you need it, and 2560 has lots more IO pins.