Yes, they are the same GPU. Keep in mind that in SLI, both cards will run at the slowest speed of the two at default clocks.
You can always overclock the non OC card to match the OC edition, but there's no guarantee it can overclock that high.
Intel i9 10850K@ 5.3GHz
ASUS ROG Strix Z490-E
Corsair H115i Pro XT
G.Skill TridentZ@ 3600MHz CL14 2x16GB
EVGA RTX 3090 Ti FWT3 Ultra
OS: WD Black SN850 1TB NVMe M.2
Storage: WD Blue SN550 2TB NVMe M.2
EVGA SuperNova 1200 P2
ASUS ROG Strix Helios GX601
