Borland C++ is a 32-bit compiler, I believe the latest version is 5.5 and it came out in about 2000.
There is a newer version from Embarcadero, 7.20 from 2016[1].
The compiler in C++Builder is more modern and it will target 64-bit for Windows at least.[0]
[0]: https://docwiki.embarcadero.com/RADStudio/Alexandria/en/C%2B...