AnandTech took a look at the new Radeon HD 4350 and Radeon HD 4550 graphics cards. These are cheap RV710 cards that might be a great fit for HTPC solutions, check it out over here.
The Radeon HD 4350 and 4550 are slotted in between integrated graphics and the set of hardware we took a look at recently in our Radeon 4670 review. The Radeon HD 4550 will run you around $45 - $55, while the Radeon HD 4350 will be priced at $39. Generally speaking, if you're a gamer you're not spending any less than $150 for a graphics card - so these GPUs are mostly for enabling hardware Blu-ray acceleration or providing a boost in performance over games running on integrated graphics.
The reviewer concludes both cards are very silent and are excellent for HTPC systems.