Video Cards entry: the comparative 2008
The characteristics compared
To see more clearly between all these variations of graphics chips, we tried to regroup in the same table, the technical characteristics of each model to facilitate comparison.
At the Blu-ray back on the performance in video playback
It took time for the latest graphics chips of the two giants of 3D support, properly, the hardware decoding of high definition video streams from the Blu-ray among others. Usually encoded H.264, but also in MPEG2-HD or even VC-1, this type of film requires a certain physical power to be decoded so fluid in your system, a dual-core processor is a prerequisite minimum for the Full HD, so using the graphics card is not it frankly unnecessary.
To verify the proper functioning, but also the good performance of video decompression engines of our graphics card entry, we read each with the same scene from a Blu-ray. This is important because it provides the true performance of engines in question in a plausible scenario where the system must also manage the HDCP protocol, which is not valid when reading a rip from a Blu-ray. For this test we use the latest version of PowerDVD, PowerDVD 8 with the activation of course whenever the hardware acceleration for decoding video of the scene after Casino Royale.
| Occupation moyenne CPU |
|
| Radeon HD 3450 | 7.180 |
| Radeon HD 3650 | 6.004 |
| Radeon HD 4550 | 6.196 |
| Radeon HD 4670 | 6.633 |
| Radeon HD 4850 | 6.465 |
| GeForce 9400 GT | 6.76 |
| GeForce 9500 GT | 6.434 |
We see the processor remains very limited, just over 5% and no matter what the graphics card used. Acceleration NVIDIA PureVideo HD UVD and ATI / AMD is to operate once the first time, which is still appreciable.
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