Forums mIRC Help 32 or 64 bits?

I tend to run a lot of mircs doing a lot of things a lot of the time. Knowing mirc will never be 64 bit and that equally all of what i do is 32 bit is there any advantage from mirc's point of view to being on a 64 bit os? Passmark tends to rank my 64bit cpu score 20% higher than my 32-bit score, but does a 32 bit program like mirc enjoy this bump in performance or does this 64 bit boost only serve 64 bit programs?

Will mirc run faster on 32 or 64 bits?