因該如何選購顯示卡呢?謝謝幫忙解答

當初買套裝電腦~最近才知道其實它的顯示卡好像挺爛的
如果想要升級的話~因該買哪個顯示卡好呢(預算5000上)?
(希望跑D3可以達到中上以上的程度)
另外有沒有其他需要升級的配備?
感謝回答喔~!!


Operating System
MS Windows 7 Home Premium 64-bit SP1
CPU
AMD Phenom II X6 1035T 27 °C
Thuban 45nm Technology
RAM
4.00 GB Dual-Channel DDR3 @ 669MHz (9-9-9-24)
Motherboard
ASUSTeK Computer INC. CM1530 (AM3) 47 °C
Graphics
BenQ GL2030A (1600x900@75Hz)
ATI Radeon 3000 Graphics (ASUStek Computer Inc)
ATI Radeon HD 4300/4500 Series (ASUStek Computer Inc) 70 °C
CrossFire Disabled
Hard Drives
977GB Seagate ST31000528AS ATA Device (SATA) 44 °C
Optical Drives
ATAPI DVD A DH16AAS ATA Device
Audio
VIA High Definition Audio

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