Mine does not seem to a GTX1070 8GB shows only 4GB usage. A 1060 6GB runs fine, as does a 1050TI 4GB. Its more about the level of detail as to what card you need it seems.
Oculus Rift S - Oculus Quest 128GB MSI trident 3 7RB-200UK Intel Core i5-7400 3 Ghz x2 MSI GTX 1050 Ti (4GB) & MSI Aero GTX 1060 OC (6GB) & MSI Aero GTX 1070 OC 8GB 16 GB RAM x2, 1TB HDD x2, 1TB SSD x2 Windows 10 Home Edition Version 10.0.18363 Build 18363, Oculus version 17, Quest Version 17
Fan Cooling by Zotac FireStorm - AfterBurner cause me problems.