Aren't all chips for the OC cards Binned as A chips at Nvidia?
No. Well they might bin chips for their own FE cards and Ampere is reported to have three bins - 0,1 and 2 with 2 being the best chip. But apparently Nvidia doesnt send the chips to the AIBS as pre binned. Thats up to the AIB to do any binning if they want to.
Maybe Asus are bin testing the chips and keeping the 10% bin 2 chips back for their even higher flagship cards later on.
But it it would be much cheaper and especially since the boards are identical between oc and none oc boards, to just put the gpu chip in the board with the OC bios and test it is okay. If it is, then it sells as a OC board. Even bin 0 should pass to go into a strix oc board although they wont have much headroom for overclocking much further.
After all the minimum boost criteria for the OC strix isnt that high and i have yet to see any 3080 card from any manufacturer not hit the Strix OC boost level. So you will get poor OC strix cards and good ones. Look at the guy on here who got a cheap nasty none oc Palit card. Clearly it was a bin 2 chip as he is running at a close constant 2100Mhz and low temps in a reference board with only 2 power pins. Its reported that 30% of chips are bin 0, 60% are bin 1 (good) and 10% are bin 2 (exceptional). If Asus needed bin 2 chips for their strix oc card they would 6 times more none oc cards to every oc they made. Since they sell more oc than none oc cards that would cause them big issues.
Now cards like the MSI lightening and EVGA Kingpin obviously do require a chip from the 10% bin 2. But as production continues the percentage of chips hitting bin 2 will increase as well so it makes sense to not bother testing atm and keeping any bin 2 chips back until the boards have finished being made and designed.
Especially when you have 1000s of pre oders to fulfil.
So for now, i would say whatever card you buy you have 30% chance its a lemon (even buying an oc strix) and 60% chance its good and 10% chance you win the silicon lottery.
I have two plain standard inno3d 2080ti that both clock to 2100 core and 4000 memory purely from winning the lottery last time.