Judging by the results AMD’s Radeon HD 6670, 6570 and 6450 have produced in our tests, these Turks- and Caicos-based products are a good buy for the money.
The Turks-based Radeon HD 6670 and 6570 deliver good performance in games in the 720p mode even if you turn on FSAA, so such cards are going to be interesting for a casual gamer. Unfortunately, they are generally slow in the 1080p mode.
The cheap Radeon HD 6450 cannot be expected to be fast in today’s games but it is functional enough (DirectX 11, OpenCL 1.1, hardware HD video decoding, etc) to surpass a mainboard-integrated graphics core. By the way, the Radeon HD 6450 is considerably faster than its predecessor Radeon HD 5450, so we can observe some progress in this market sector with the release of the new GPUs. Perhaps entry-level cards of this type will be replaced by integrated graphics altogether in the next years, but so far the Radeon HD 6450 is quite a viable solution.
The Turks-based Radeon HD 6600/6500 and the Caicos-based Radeon HD 6400 series cards are roughly similar when it comes to playing DVD or Blu-ray video but AMD’s DVD upscaling quality is somewhat lower than what is offered by Nvidia products. This is not a serious shortcoming, though, as DVDs have been declining in popularity. As for the HD format, the HQV 2.0 tests suggest that AMD’s products provide a higher quality with it than their GeForce series counterparts.
Like for most other GPUs, decoding video isn’t a problem for the Turks and Caicos. The CPU load was low with either of them and every video was played smoothly.
Thus, the AMD Radeon HD 6450, 6570 and 6670 can be recommended for multimedia PCs, HTPCs and even inexpensive gaming systems as they provide rich SD and HD video playback options, an advanced display controller (DisplayPort 1.2, HDMI 1.4a, Eyefinity, dual-link DVI, etc), and a good video processor. All of this is combined with low power consumption.