Is it advisable to use x64 apps on an old x64 cpu?

[magmag]

I'm going to clean install Firefox 55 but I'm still deciding between the 64 or the 32 bit versions. I'm using a very old cpu that I bought in mid 2010 (Intel Core i5 750 Lynnfield) with Windows 7 x64 and 8 GB of DDR3.

I'm not sure if the recent 64 bit browsers nowadays are more optimized for recent 64 bit CPUs or I should stick with the 32 bit version?

 

[rvcjew]

I would use x64 then if you run into any issues get the 32, they use the same user folder regardless so you should not lose anything.