Originally Posted by renethx
Finally I succeeded in getting perfectly smooth BD playback and multichannel lossless HDMI audio without resorting to a discrete graphics (so only a single HDMI cable for audio/video).
The point turned out to be using Phenom
(that's the reason why Bahn Yuki was successful; he uses Phenom X4 9550).Why Phenom?
Phenom (K10) processor is the successor to the Athlon (K8) processor. So far it has not been so successful for various reasons, but there are at least two great advantages from the viewpoint of HTPC (apart from the increased number of cores):
- K10 processor uses HyperTransport 3.0
which nearly doubles the bandwidth between IGP and system memory. Because of this the performance of IGP greatly increases.
- Split power planes for CPU cores and the on-die memory controller for more effective power management (Enhanced PowerNow!
), allowing the cores and the memory controller to scale power consumption up or down independently. That means no more stuttering when CPU clock changes.Confuguration
- Phenom X3 8450 2.1GHz
- GeForce 8200 (no discrete graphics unlike my previous attempt, Any GeForce graphics card + GeForce 8200 HDMI audio work together perfectly!
- PowerDVD 8 Ultra (build 1622)
- Vista SP1 (32-bit or 64-bit, it doesn't matter at all)
- Spider-Man 3, Dolby TrueHD sound trackResults
The processor is running only at 1.05GHz
and 1.04V (because Cool'n'Quiet or Enhanced PowerNow! works), the CPU utilization is 30-60%
, the picture quality is equivalent to GeForce 9600 GT. Hardware acceleration works fine and AnyDVD HD is unnecessary. The processor's TDP is 95W, but it runs very cool at BD playback (~55°C with room temperature 25°C, passively cooled
with Scythe Ninja Mini).
There are a couple of problems yet:
- Windows always sends 7.1 LPCM regardless of the source (the driver problem).
- Hybrid SLI (with my XFX GeForce 8500 GT card) does not work yet, at least in the abit board. Maybe I should try the ASUS board to see what's going on. But the main purpose of Hybrid SLI in HTPC is to get perfect post-processing
. Using Phenom may negate the necessity of Hybrid SLI, just like AMD 780G chipset (test is needed).