That is good to know. Out of nowhere today I saw microcenter had a gigabyte oc 4090 so that's what I ended up buying. Hopefully it doesn't turn out bad like the gigabyte 1080ti I had years ago..but that's what the replacement warranty is for..barring it won't catch fire. It shouldn't since I got a PSU that has a native 16 pin connector rated at 600w.
My 3080 is a Gigabyte card, and I'll admit that my experience with it did not push me toward a Gigabyte model initially. The biggest thing is that my 3080 Aorus Master has a huge heatsink, so I expected decent temperatures and/or low noise levels. The temperatures were high (70+) and the noise was too much (to me). I was disappointed that a higher-end variant had such poor performance. Although, the 4090s are all fine in regard to temperatures and noise, but the big thing is that EK already had blocks announced and available for pre-order for the Gigabyte cards. (They have them up for MSI now too.)
Honestly, in the end, I wasn't too worried about which brand. I preferred the FE simply because it had good performance at the lowest cost. Only a few other models were priced at that amount, and some of those were not guaranteed blocks. (Gigabyte's cheapest model was not verified in EK's configurator last I checked.)
So apparently the Corsair cable I got is not the right one, and the 12-pin on it is only good for the 3000 cards. There is a new cable with the 16-pin connector, but it seems out of stock everywhere. If it's helpful for anyone else, the 12-pin cable is sleeved while the 16-pin has ribbon wires, it's the easiest way to tell them apart.
It's just as well that I cannot actually find a 4090 anywhere. To be honest I don't need it that urgently and will wait until they become more widely available. The Microcenter drops around here seem sporadic.
If you can poke around at Best Buy on the weekdays, you are probably better off just watching their site. That's how I got my Founder's Edition card. I do sometimes have a YouTube stock tracker open, but in general, I just save the items to my Saved List and refresh it. I actually thought I missed out when I got mine because they had started going on sale 20 minutes before I even noticed, but Best Buy tends to release cards in waves.
I got my CableMod cables in yesterday, but I haven't had a chance to hook anything up yet. It's a bit more effort since I need to remove my current water-cooled card to put the 4090 in. (I'd like to get EK's new block, but I'm waiting for Performance PCs to get them in rather than ordering from EK.)