Whereas older GPUs were fed data by the way of a 384-bit wide memory bus, the 380X is limited to a 256-bit bus, as was the case with the Radeon R9 285 and R9 380 before it.
ໃນຂະນະທີ່ GPUs ເກົ່າແມ່ນເກັບຂໍ້ມູນຜ່ານທາງລົດເມ ຫນ່ວຍ ຄວາມ ຈໍາ ຂະ ຫນາດ 384 ບິດ, 380X ແມ່ນ ຈໍາ ກັດຕໍ່ລົດເມ 256 ບິດ, ເຊັ່ນວ່າ Radeon R9 285 ແລະ R9 380.