Looking for GPU upgrade from a Dell HD5670 clone - possibly silent. - Is a 6450 faster at all?

nostob

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Nov 1, 2009
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I have a Dell XPS 9100 with some kind of Dell HD5670 clone. Unfortunately, I can't upgrade to the latest AMD drivers. Never seems to work. The only driver that seems to work is from 2010 (avail. from Dell download).

I would like to upgrade the card. It is a non-gaming PC. Silent might be nice.
I have a PCI Express x16 2.0 slot.

I found a couple of 6450's without a fan. But I am not sure if the 6450 is actually faster than the 5670?
Any other recommendations?
 
No the 5670 is slower.
Code:
5                     6                                             7                                 0
^                    ^                                             ^                                 ^
generation     family/course performance         specific model               normally zero but some cards it is a 5

The 5670 is slightly slower than a 6670
A 6450 is equivalent to a 5450