What? No. That's a terrible approach. You compare the first two first, to hash out your impressions and thoughts, identify points of comparison, qualities of each, etc. Then you bring that knowledge to the third, and let that inform the final comparison (including any entirely new findings). Waiting until you've had all three - unless they're right after each other with no gaps - muddies your recollection of the two first ones, making the final comparison more difficult and less accurate.
And, once again, by that logic you would literally never be able to compare anything, as there's always something new coming. Always.
@ARF: the reason I
hope you're joking: Not only are you portraying a fantasy-land idea of how people get access to pre-release hardware ("If they cared, they could find a way" - tell me, do you have a 13th gen CPU? Could you get one if you
cared enough?), but you must understand that prematurely leaking something like this, before the product is even announced (unlike Zen4, which is launching in three days) would
seriously jeopardize the very same relationship they might have with Intel that might grant them access to such hardware for development purposes.