Can I use a new videocard with previously installed drivers?

Hi, I have a RadeonHD5450 1GB with the latest drivers(ATI catalyst control center) I'm gonna buy a 4670 or a 5670 within this week. When I install my new graphics card, do I have to install the drivers for it since I already have the latest drivers from my 5450. Do I plug it right away?. Any advice?
If I do get a 5670, it's DDR5 so is it compatible with my motherboard? Here's my specs:

Operating System
MS Windows 7 Ultimate 64-bit
CPU
AMD Athlon II X3 440 27 °C
Rana 45nm Technology
RAM
4.00 GB Single-Channel DDR3 @ 669MHz (9-9-9-24)
Motherboard
Emaxx Technologies, Inc EMX-MCP61D3-iCafe (CPU 1) 30 °C
Graphics
1619w (1366x768@60Hz)
ATI Radeon HD 5400 Series (Sapphire/PCPartner) 50 °C

Thanks!
3 answers Last reply
More about videocard previously installed drivers
  1. Yes you can, but it's always better to re-install the drivers.

    Also I would get the HD 5670 since it is roughly 30% faster than the HD 4670.
  2. jaguarskx said:
    Yes you can, but it's always better to re-install the drivers.

    Also I would get the HD 5670 since it is roughly 30% faster than the HD 4670.

    Nice, can my motherboard support a DDR5 videocard? I'm clueless... thank you
  3. bayonet14 said:
    Nice, can my motherboard support a DDR5 videocard? I'm clueless... thank you

    Yes it can.. The DDR5 is the memory only used by the video card, and has no relationship with the memory located on your motherboard.
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