掉驱动 可能是显卡有问题 也有可能内存不稳不过这个几率比较小 我只是在超内存的时候遇到过

记得在HWinfo里 A卡有一项是显存错误的 可以看一下是不是有报错

买回来的时候，开机有概率会黑屏不显示bios启动界面，进到window才显示，见没什么影响就没管了，用了4年，以前也有掉驱动但是不怎么频繁。

a卡祖传艺能掉驱动，反正一言不合就掉驱动

Video chipset
Video Chipset: AMD Radeon RX 480
Video Chipset Codename: Polaris 10/Ellesmere XT
Video Memory: 8192 MBytes of GDDR5 SDRAM [Samsung]
Video Card
Video Card: Sapphire RX 480 Nitro+
Video Bus: PCIe v3.0 x16 (8.0 GT/s) @ x16 (8.0 GT/s)
Video RAMDAC: Internal DAC(400MHz)
Video BIOS Version: 015.050.000.000
Performance
Graphics Processor Clock: 300.0 MHz
Graphics Memory Clock: 300.0 MHz (Effective 1200.0 MHz)
Graphics Memory Bus Width: 256-bit
Number Of ROPs: 32
Number Of Unified Shaders: 2304
Number Of TMUs (Texture Mapping Units): 144
ASIC Quality: 78.5 %
SMU Firmware Version: 0.23.26
Hardware ID: PCI\VEN_1002&DEV_67DF&SUBSYS_E347174B&REV_C7
PCI Location (Bus:Dev:Fnc): 1:00:0
Driver Information
Driver Manufacturer: Advanced Micro Devices, Inc.
Driver Description: Radeon (TM) RX 480 Graphics
Driver Provider: Advanced Micro Devices, Inc.
Driver Version: 26.20.15029.27016
AMD Driver Package Version: 19.50.29.27-200421a-354429E-ATI
AMD Crimson Driver Version: 20.4.2
Driver Date: 21-Apr-2020
DCH/UWD Driver: Capable
DeviceInstanceId PCI\VEN_1002&DEV_67DF&SUBSYS_E347174B&REV_C7\4&F5DCEB0&0&0008
Location Paths PCIROOT(0)#PCI(0100)#PCI(0000)