32-bit Java is not "slower." In fact, for apps with small memory needs (< 2GB), it is often faster because it uses less RAM and has smaller pointers. The Catch: Installation Pain Here is where most users get tripped up. You can have both 32-bit and 64-bit Java installed on the same machine.
But every so often, you hit that error: "This application requires a 32-bit Java Runtime Environment." 32 bit java runtime environment
When was the last time you actively searched for a 32-bit Java Runtime Environment? If you’re like most developers today, the answer is probably "not recently." We live in a 64-bit world. Our operating systems, our browsers, and our IDEs have all made the jump. 32-bit Java is not "slower
However, Windows often gets confused. If you install the 32-bit JRE after the 64-bit version, it may overwrite your file associations or add the wrong path to your PATH variable. But every so often, you hit that error:
Just don't expect to run a massive microservices cluster on it. For that, you definitely want 64-bit.