Question Asus ROG RTX 2070 Question

[clutchc]

Asus has at least three variation on this ROG Strix RTX 2070 card with varying clock speeds.
The ROG-STRIX-RTX2070-8G-GAMING (the one I'm considering)
The ROG-STRIX-RTX2070-O8G-GAMING
The ROG-STRIX-RTX2070-A8G-GAMING

All the reviews I've managed to find were on the O8G. The 8G appears to be identical but based on the reference clock speed and is of course the best priced of the three. Has anyone seen any bad points regarding the ROG Strix RTX 2070 line of cards? Should I assume the 8G will have a lower binned GPU than its OC'ed brethren?
I'm also considering the Evga RTX 2070 Black Gaming

 

[ElectrO_90]

I'd guess you are right, but it's not really about the chip itself, it's probably different memory modules.