Radeon HD 5670
Exceptional 1680x1050 performance in most games, 1920x1200 in most games with lowered detail
The Radeon HD 5670 offers best-in-class performance and DirectX 11
compatibility, along with all of the other Radeon HD 5000-series
features, such as multi-display support and high-def audio bitstreaming.
The problem is, this card becoming hard to find as it is being phased
out to make way for the similarly priced DDR3-equipped Radeon HD 6670.
While the newer model does have a slight advantage when it comes to raw
GPU capability, the memory bandwidth is much lower. As a result, we'll
recommend the Radeon HD 5670 as long as we can find it available.
Best PCIe Card For ~$95: None
Honorable Mention:
Radeon HD 6670 GDDR5
Exceptional 1680x1050 performance in most games, 1920x1200 in most games with lowered detail
The Radeon HD 6670 isn't really much of an upgrade over the Radeon HD
5670, and it's definitely slower than the similarly-priced Radeon HD
6750. However, we're going to give it an honorable mention for being the
fastest card (at least compared to reference versions from AMD and
Nvidia) that doesn't require an auxiliary PCIe power cable. That is to
say its power requirements are entirely satisfied by a second-generation
PCI Express x16 slot.
Graphics Card Hierarchy Chart January 2012
Graphics Card Hierarchy Chart January 2012