I submit for your favorable consideration two vdpau benchmark using qvdpautest :

https://github.com/robertmassaioli/qvdpautest

number one
Intel(R) Core(TM)2 Quad CPU Q9550 @ 2.83GHz
NVIDIA GPU GeForce 210 (GT218) at PCI:1:0:0 (GPU-0)

VDPAU API version : 1
VDPAU implementation : NVIDIA VDPAU Driver Shared Library 285.05.09 Fri Sep 23 17:55:14 PDT 2011

SURFACE GET BITS: 1011.3 M/s
SURFACE PUT BITS: 1072.98 M/s

MPEG DECODING (1920x1080): 68 frames/s
MPEG DECODING (1280x720): 162 frames/s
H264 DECODING (1920x1080): 61 frames/s
H264 DECODING (1280x720): 130 frames/s
VC1 DECODING (1440x1080): 83 frames/s
MPEG4 DECODING (1920x1080): 68 frames/s

MIXER WEAVE (1920x1080): 280 frames/s
MIXER BOB (1920x1080): 466 fields/s
MIXER TEMPORAL (1920x1080): 131 fields/s
MIXER TEMPORAL + IVTC (1920x1080): 86 fields/s
MIXER TEMPORAL + SKIP_CHROMA (1920x1080): 175 fields/s
MIXER TEMPORAL_SPATIAL (1920x1080): 57 fields/s
MIXER TEMPORAL_SPATIAL + IVTC (1920x1080): 45 fields/s
MIXER TEMPORAL_SPATIAL + SKIP_CHROMA (1920x1080): 65 fields/s
MIXER TEMPORAL_SPATIAL (720x576 video to 1920x1080 display): 205 fields/s
MIXER TEMPORAL_SPATIAL + HQSCALING (720x576 video to 1920x1080 display): 123 fields/s

MULTITHREADED MPEG DECODING (1920x1080): 61 frames/s
MULTITHREADED MIXER TEMPORAL (1920x1080): 89 fields/s

number two
qvdpautest 0.5.1
Intel(R) Core(TM)2 Quad CPU Q9550 @ 2.83GHz
NVIDIA GPU Quadro 600 (GF108GL) at PCI:1:0:0 (GPU-0)

VDPAU API version : 1
VDPAU implementation : NVIDIA VDPAU Driver Shared Library 285.05.09 Fri Sep 23 17:55:14 PDT 2011

SURFACE GET BITS: 1042.14 M/s
SURFACE PUT BITS: 1163.91 M/s

MPEG DECODING (1920x1080): 82 frames/s
MPEG DECODING (1280x720): 239 frames/s
H264 DECODING (1920x1080): 65 frames/s
H264 DECODING (1280x720): 101 frames/s
VC1 DECODING (1440x1080): 83 frames/s
MPEG4 DECODING (1920x1080): 72 frames/s

MIXER WEAVE (1920x1080): 217 frames/s
MIXER BOB (1920x1080): 306 fields/s
MIXER TEMPORAL (1920x1080): 138 fields/s
MIXER TEMPORAL + IVTC (1920x1080): 118 fields/s
MIXER TEMPORAL + SKIP_CHROMA (1920x1080): 173 fields/s
MIXER TEMPORAL_SPATIAL (1920x1080): 70 fields/s
MIXER TEMPORAL_SPATIAL + IVTC (1920x1080): 63 fields/s
MIXER TEMPORAL_SPATIAL + SKIP_CHROMA (1920x1080): 78 fields/s
MIXER TEMPORAL_SPATIAL (720x576 video to 1920x1080 display): 205 fields/s
MIXER TEMPORAL_SPATIAL + HQSCALING (720x576 video to 1920x1080 display): 134 fields/s

MULTITHREADED MPEG DECODING (1920x1080): 107 frames/s
MULTITHREADED MIXER TEMPORAL (1920x1080): 129 fields/s

conclusion :
quadro 600 : H264 DECODING (1920x1080): 65 frames/s
geforce 210: H264 DECODING (1920x1080): 61 frames/s