Does 32/64-bit, Home/Pro Windows 7 (10) run better on older machines?

As titles cannot be longer than 70 characters (I don't know why), here is the long form, proper title, longer than 70 chars:

Please help me to determine whether 32 or 64-bit, Home or Premium variants of Windows 7 and 10 runs better on some older machines!

Both Windows 7 and 10 is interesting. I can provide 32 and 64-bit, Home and Premium versions for both. I have these two older ThinkPads, both with 64-bit Core 2 Duo processors, one with 2 GB of RAM, the other with 4 GB. The 2 GB one came with XP Professional 32-bit preinstalled, the 4 GB came with Vista Business 32-bit preinstalled. Let's forget both XP and Vista (once, and for all). As you can see, both machines, regardless sporting 64-bit CPUs, came with the 32-bit Windows. Both had the Pro category of the older OS.

I don't need any premium OS features, net, media, light office, nothing special. I noticed the Windows 7 install ISO is larger for the Pro version, while the Windows 10 ISO is the same size for both Home and Pro. I heard it 10 Pro gives you more tweaking power, so while you might be better off with the Pro version for the 10 for performance, while, my hunch is (though I have no evidence), you might be better off with the Home version for the 7, for performance. 32 or 64-bit? I have no idea for this.

To sum it up, I'm asking for your recommendation, BOTH for 7 and 10 for both machines. That is, best Windows 7 version (32/64-bit, Home/Pro) AND best Windows 10 version (32/64-bit, Home/Pro) for the 2 machine with 2 GB of RAM, then best Windows 7 version (32/64-bit, Home/Pro) AND best Windows 10 version (32/64-bit, Home/Pro) for the 2 machine with 4 GB of RAM, respectively.

All in all, that would be 4 recommendations. :) I can furnish a valid license for all these Windows versions, for the sake of this experiment. Thank you!

AddRAM said:

I have always felt that Home Premium ran a bit faster then Pro, but that could have all been in my head

And there are people who believe the opposite.

Subjective performance evaluations of an individual are highly subject to their own biases, preconceived ideas, and other factors. Minor performance differences must be considered as highly questionable and of little value. From a theoretical standpoint I would consider any difference to be too small to be noticed. Performance measurements are very difficult to do right and often aren't.

Base your decision between Home and Pro editions on factors other than performance.

Thanks for your insights. To add a little perspective: no way I'm gonna add more (old, overpriced) RAM onto these old machines. What for? For my use cases described above (net, media, light office, nothing special) it doesn't make sense to me. Rather I buy a brand new machine, but that's a different story. Still, I want to figure out the best version of Windows for the given configurations (both 7 and 10, and either 32 or 64-bit, Home or Pro), thank you!

I have to add, I also felt 32-bit Home was the fastest, at least for Windows 7, not only with the 2 GB, but with the 4 GB machine as well. No other considerations here for Home or Pro, besides performance. I have SSD for what it's worth, that's always a reasonable upgrade!