ASUS DUAL-RTX4070-O12GAmazonで購入GIGABYTEGeForce RTX 4070 WINDFORCE OC 12GAmazonで購入MSI GeForce RTX 4070 VENTUS 2X 12G OCAmazonで購入Palit GeForce RTX4070 Dual 12GBAmazonで購入玄人志向 GG-RTX4070-E12GB/DFAmazonで購入