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HiDef mega CPU or mega graphics card?

rigman

Well-known Member
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
 

SLIM

Novice Member
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
 

rigman

Well-known Member
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
 
B

beeblebrox12

Guest
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.
 
B

beeblebrox12

Guest
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 :)
 

rigman

Well-known Member
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
 
K

Kramer

Guest
I'm running a XP2500 barton with 2 x 512meg ddr 2700 memory in a Nforce2 mobo (using the onboard gf4 equivilant graphics) and it's run every hi-def windows media player clip I've thrown at it...
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:
 

Iain Shields

Novice Member
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.
 
K

Kramer

Guest
Originally posted by Iain Shields
I'll download it and report back if it plays smoothly or not...
Not my type of movie either but it's one of the most demanding "HD" clips I've come across.

:smoke:
 

Iain Shields

Novice Member
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.
 

rigman

Well-known Member
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
 

Rob.Screene

Active Member
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.
 

Iain Shields

Novice Member

Rob.Screene

Active Member
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.
 

james.miller

Novice Member
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.
 

Rob.Screene

Active Member
Originally posted by james.miller
graphics cards are classed as 3d accelerators. The have very little influence on anything that isnt 3d - they just display the image.
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.
 

james.miller

Novice Member
Originally posted by Rob.Screene
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.
ah yes of course. i stand corrected on that point:) i dont know why i didnt say that lol.
 

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