[mythtv-users] Best VDPAU card for under $50

[Raymond Wagner]

On 5/24/2011 09:36, Mark Lord wrote:
> On 11-05-24 03:49 AM, Terjesen Jens Peder wrote:
> ..
>> NVIDIA GPU GeForce G210 (GT218) at PCI:1:0:0 (GPU-0)
>> MIXER TEMPORAL_SPATIAL (1920x1080): 67 fields/s
>> MIXER TEMPORAL_SPATIAL + IVTC (1920x1080): 53 fields/s
>> MIXER TEMPORAL_SPATIAL + SKIP_CHROMA (1920x1080): 75 fields/s
>>
>> NVIDIA GPU GeForce GT 220 (GT216) at PCI:1:0:0 (GPU-0)
>> MIXER TEMPORAL_SPATIAL (1920x1080): 203 fields/s
>> MIXER TEMPORAL_SPATIAL + IVTC (1920x1080): 169 fields/s
>> MIXER TEMPORAL_SPATIAL + SKIP_CHROMA (1920x1080): 224 fields/s
>>
>> NVIDIA GPU GeForce GT 430 (GF108) at PCI:1:0:0 (GPU-0)
>> MIXER TEMPORAL_SPATIAL (1920x1080): 76 fields/s
>> MIXER TEMPORAL_SPATIAL + IVTC (1920x1080): 68 fields/s
>> MIXER TEMPORAL_SPATIAL + SKIP_CHROMA (1920x1080): 85 fields/s
>>
>> NVIDIA GPU GeForce GT 520 (GF119) at PCI:1:0:0 (GPU-0)
>> MIXER TEMPORAL_SPATIAL (1920x1080): 67 fields/s
>> MIXER TEMPORAL_SPATIAL + IVTC (1920x1080): 55 fields/s
>> MIXER TEMPORAL_SPATIAL + SKIP_CHROMA (1920x1080): 75 fields/s
> Wow.. even an Ion2/Atom box is better than the 520.

The ION2 runs off the mobile version of the GT210, at a marginally 
higher (35MHz) clock rate.  According to those benchmarks, that would 
put the ION2 and GT520 about par.

The GT220 operates at similar frequency to the GT210, but with triple 
the shader units.  Coincidentally, the benchmarks show it to have 
roughly triple the performance.  Following that logic, it would stand 
that the GT520 should be comparable to the GT220, and the GT430 would be 
about twice the performance.  Prevailing theory is that the shader-code 
deinterlacers were heavily optimized for the older shader architecture, 
and don't run as well on the new Fermi architecture, a deficiency that 
should be improved by a future driver release.

I still don't undestand what that "TEMPORAL_SPATIAL + IVTC" test is.  
You can't run IVTC and deinterlacing at the same time.  They're mutually 
exclusive by very definition.