We enjoy a very good lifestyle in North America and Europe, but most people around the world can't afford to shell out hundreds of dollars for a new video card. That's why the majority of ATI's video cards sales are less than $100.
ATI is launching the Radeon HD 5450 for those people. The card uses ATI's newest 40nm chip from TSMC, codenamed Cedar. The GPU is a mere 59mm2, enabling the Radeon 5450 to become the first DirectX 11 video card to sell for under $50. It will use DDR3 or DDR2, depending on the Add-In Board partner who sells the card. 512MB versions will sell for around $50, while 1GB versions will sell for around $60.
The new card also targets another important market. The Home Theatre PC segment is growing, and users there generally desire a passive cooling solution. The Radeon 5450 has a Thermal Design Power of only 19.1W, and an idle power usage of 6.4 watts. This enables the use of a passive cooling solution. The reference card shown uses a heatsink that occupies two slots, but AIBs will mostly be selling single slot solutions.
The Radeon 5450 has very similar specifications to the Radeon HD 4550, but adds support for ATI's Eyefinity multi-monitor support. 24 inch monitors are now available around the $200 mark, and smaller screen sizes can be had for even less. Other features of note to HTPC enthusiasts are 8-channel LPCM audio and bitstreaming audio support.
DirectX 11 is here to stay, and developers are working on the software to take advantage of it now that there is an established customer base.
ATI Radeon HD 5770
ATI Radeon HD 5750
ATI Radeon HD 5670
ATI Radeon HD 5450
1.2GHz (4.8GHz data
data rate) GDDR5
data rate) GDDR5
800MHz (1.6GHz data
Memory Bus Width
1GB / 512MB
$149 / $129
$119 / $99
$49 / $59
quote: If this manages to outperform my current slim 4650, I'll be upgrading my HTPC!
quote: Is there really much advantage to outputting Dolby TrueHD or DTS HD over 7.1 PCM?
quote: You can't think of DTS-HD and DDTrueHD like previous compressed codecs, they are essentially just containers (like a zip file) which contain uncompressed LPCM audio.
quote: In my opinion DTS-HD/DDTrueHD actually have a bigger disadvantage, and thats the ability to mix other tracks into the signal (for example for extra features or internet downloads), this is not possible with these codecs as the signal must be left untouched until it reaches the receiver.
quote: Thanks for the explanation. Let me ask a question to make sure I really understand this, so all the receiver does is pass DTS-HD and DDTrueHD audio to a DAC for analog output. If this is true then the real benefit is unmolested audio until the DAC stage?
quote: Would the mixing occur on the HTPC or the receiver? And if it's on the receiver can you prevent other data from mixing with this data? Sorry for the questions, I was obviously confused before on how this worked.
quote: In the end its up to personal opinion, go do some sound tests and figure out what sounds the best to you.
quote: Am I losing sound from the rear that should be mixed with my side channels?