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HiDef mega CPU or mega graphics card?

Discussion in 'Computer Components' started by rigman, May 6, 2004.

  1. rigman

    rigman
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    To play Hidef on a PC where would be the money be better spent?


    a high end CPU P4 3gig+, Athlon 64 and a cheaper graphics card

    or a cheaper CPU P4 2.6 gig, Athlon XP2500 and a high end graphic card 9800 pro or whatever is the flavour of the month.

    or do you have to go high end for both :thumbsdow

    thanks
    Darren
     
  2. SLIM

    SLIM
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    Hi m8 if you can hold up for a week are two you should beable to get both for the same price of say a Athlon 64
    so i would go with 9800 pro and say a P4 2.8
     
  3. rigman

    rigman
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    Why is that then? Is it because the next generation of graphics card will be released and so the 9800s will drop in price?

    I can wait a week

    thanks
    Darren
     
  4. beeblebrox12

    beeblebrox12
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    Even if it's not for hi-def, put as powerful processor in your HTPC as you can. Video card comes second, but you shouldn't compromise much either.
     
  5. beeblebrox12

    beeblebrox12
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    If you intend to use FFDShow, DScaler, VMR9 with most recommended settings for higher quality DVD playback, you will soon find out that no processor on this earth is fast enough for everything your heart desires :)
    WMV9 HDTV is easy compared to what people may want to do with FFDShow :)
     
  6. rigman

    rigman
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    mmm... looks like I need to do some more homework.

    The PC is only for HiDef material downloaded from the net and maybe the odd game although I will probably buy another hi end PC later in the year when half lifee 2 and doom 3 are released.

    I have a Rock pro video processor for DVD, sky etc.

    I am not sure what FFDShow or VMR9 does but I will do a search and read up on them.

    What is the benefit of a prescott processor?

    Does anyone else have a similar spec to Iain and also have no problems with hidef?

    thanks guys
    Darren
     
  7. Kramer

    Kramer
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    Even the 1080i clip/trailer of Scooby Doo 2? I find this very demending while all other WMVHD/.ts d/loads are OK.

    720p WMVHD stuff should be OK but beyond that, serious horsepower required.

    :smoke:
     
  8. Iain Shields

    Iain Shields
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    To be honest, I havn't tried the Scooby Doo 2 clip for the reason that it's not my kind of movie :p

    I'll download it and report back if it plays smoothly or not...

    Regards,
    Iain.
     
  9. Kramer

    Kramer
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    Not my type of movie either but it's one of the most demanding "HD" clips I've come across.

    :smoke:
     
  10. Iain Shields

    Iain Shields
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    You were right there Kramer, it played but with several jumps and missed frames, audio was fine though...

    So it looks like you will need a bigger CPU, I'd say at least a XP3000+ if my experience is anything to go by.

    Regards,
    Iain.
     
  11. rigman

    rigman
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    Why do you need such fast processors? I thought the graphics card would be doing all of the work. What does the processor have to do to justify 3 gigs?

    thanks
    Darren
     
  12. Rob.Screene

    Rob.Screene
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    It depends on how the clip was encoded.

    I don't think current graphics cards/drivers accelerate WMV playback much if at all.

    I'm not sure how much assistance current cards/drivers give for high-def off-air MPEG2 transport stream (.ts) playback though.

    regards,
    Rob.
     
  13. Iain Shields

    Iain Shields
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  14. Rob.Screene

    Rob.Screene
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    Good link Iain.

    Hmm. They also recommend 1920 x 1440 screen resolution as optimum for 1080p!

    Anyone even heard of a display capable of that?

    cheers,
    Rob.
     
  15. james.miller

    james.miller
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    graphics cards are classed as 3d accelerators. The have very little influence on anything that isnt 3d - they just display the image. Ok, that's over-simplification, but that should make it clearer.

    newer graphics cards have hardware mpeg2 decoding which takes the work of decoding dvd material from the cpu, but over than that they do very little. For that very reason, you need a very fast cpu for hi-def material, but you can use just about any graphics card you want.
     
  16. Rob.Screene

    Rob.Screene
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    Hi James,
    May I disagree.

    For any DirectShow overlay or VMR7/VMR9 video modes, the graphics card GPU/driver does colour space conversion and scaling. Both of which are very important to image quality.

    I compared an NVIDIA GeForce 2 to an ATI Radeon. It's a shocking difference, even on a 17-inch monitor let alone a big screen. The GeForce 2 clearly doing lower bit-depth and poorer scaling.
    i.e. gradient solarisation and pixel aliasing are very noticeable on DVD's.

    regards,
    Rob.
     
  17. james.miller

    james.miller
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    ah yes of course. i stand corrected on that point:) i dont know why i didnt say that lol.
     

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