You might be right, but I haven't found any difference.
We are talking about the 6150, as you know, not 6100 - which is missing several things....
Could you be more spesific? I belive that the 6150 is ideal for HTPC, du to no noise, little heat, low power cons., and no need for a riser card. Besides; its cheap and the mobo deliveres high-def. sound.
This chart have been continually changed, perhaps as they are tweaking their drivers. But currently:
The 6800 series (some members) lack all wmv9 features due to hw bug.
The regular 6600 and onwards feature all purevideo features
The 6600LE miss "Spatial-temporal de-interlacing of hd content"
The 6500 and 6200TC miss "inverse telecine" and "bad edit correction" for SD and "Spatial-temporal de-interlacing of hd content". The 6200TC 128MB miss ALL hd features
The 6150 miss "Spatial-temporal de-interlacing of hd content"
the 6100 have only basic mpeg2 and wmv9 decode accel of SD content.
The 6500 and 6200TC miss "inverse telecine" and "bad edit correction" for SD and "Spatial-temporal de-interlacing of hd content". The 6200TC 128MB miss ALL hd features
Im confused now because the manufacture Prolink states that GF6200TC supports HDTV Encoding, even the 128mb model, but the NVIDIA reference chart states that it does not!
Having hdtv out does not necessarily imply that the chip does any hdtv processing.
Purevideo is a marketing label from nvidia combining the DVD playback codec with hardware (graphics card) acceleration for all kinds of video processing.
Hdtv out is usually 3x rca plugs that can output composite analog video at 720p or 1080i.