Computing Power required to play HD-DVD/BD - Page 2 - Canadian TV, Computing and Home Theatre Forums
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post #16 of 22 (permalink) Old 2006-12-12, 09:52 AM
 
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diogen ... finally read the article

I am still sticking with my upgrade plan ...
CPU ----- Intel E6400 oc'ed to 3.2gHz
Memory - 1G min/ 2G with Vista
Video ---- Nvidia 7950GT (GPU prower, HDCP compatiablity, and will have sound integerated HDMI)

According to Anandtech, an x6800 with the 7950GT hit an average of 43.5% with a max of 68.8%. At 3.2ghz I will have almost 10% more CPU available.
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post #17 of 22 (permalink) Old 2006-12-12, 11:31 AM
 
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I don't share Anand's fear that future H.264 encodes might need more CPU/GPU power.
The algorithms do get more complex, but the bitrate will go down fast (just like VC-1: from ~20Mbps in "The Last Samurai" to ~10Mbps today).
And I believe that new video drivers will take care of most of the decoding so that what today barely does it will do it easy (just like WMV-HD).

Diogen.
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post #18 of 22 (permalink) Old 2006-12-16, 05:33 PM
 
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Anand posted an update on hidef playback including different formats using different video cards.
As can be seen on the 4th page, the 7600GT beats some of the 7950GTX reinforcing the argument that pure Hz is all that's needed and fancy 3D abilities of the later cards go unused in hidef playback.
It also points out that not that much of the GPU assistance is needed when using modern CPUs.

Diogen.
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post #19 of 22 (permalink) Old 2006-12-16, 06:45 PM Thread Starter
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Interesting commentary on that followup.

Unfortunately, unless the ATI cards are miracle workers or there are some serious driver improvements, I am really looking at having to upgrade the crap out of at least one of my HTPC systems. Either to an E6400/6600 or to a X2 at the least.

Part of my future watching will, of course, include the continuing saga of HDCP, Vista and whether or not XP will be allowed to play HD-DVD/BD.

Boy, I hate loving technology. Although I suppose it is better than being addicted to crack.
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post #20 of 22 (permalink) Old 2006-12-22, 03:09 PM Thread Starter
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Well, with the now available PDVD Ultra, the specs for HD/BD are out...

For Video:

Quote:
nVidia: GeForce 6600 GT, GeForce 7600 GT, GeForce 7800 GTX 512, GeForce 7900 GX2, GeForce 7900 GTX, GeForce 7950 GX2

ATI: X1600 series, X1800 series, X1900 series

Video RAM: Graphics card memory requires 256 MB or above
For CPU:

Quote:
  • Intel (Minimum):
  • Pentium 4 541 3.2 GHz, Pentium D 840 3.2 GHz, Pentium D 930 3.0 GHz or 940 3.2 GHz, Core Duo T2400 1.83 GHz, Pentium M 755 2.0 GHz

    Intel (Recommended):
  • Pentium EE 840 3.2 GHz or 955 3.4 GHz, Pentium D 945 3.4 GHz, 950 3.4 GHz or 960 3.6 GHz, Core Duo T2500 2.0 GHz, T2600 2.16 GHz or T2700 2.33 GHz, Core 2 Duo E6300 1.8 GHz, E6400 2.13 GHz, E6600 2.4 GHz, E6700 2.66 GHZ or X6800 2.93 GHz

    AMD (Minimum):
  • Athlon 64 X2 3800+ 2.0 GHz or 4000+ 2.0 GHz, Turion 64 X2 TL-50 1.6 GHz, TL-52 1.6 GHz or TL-56 1.8 GHz

    AMD (Recommended):
  • Athlon 64 FX FX-60 2.6 GHz or FX-62 2.8 GHz, Athlon 64 X2 4200+ 2.2 GHz, 4400+ 2.2 GHz, 4600+ 2.4 GHz, 4800+ 2.4 GHz or 5000+ 2.6 GHz, Turion 64 X2 TL-60 2.0 GHz
So it looks like one of my systems is out for graphics and both are appearently out for CPU.

Good thing that new X1950 Pro AGP has an MSRP of only $210 USD.
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post #21 of 22 (permalink) Old 2007-01-09, 07:46 PM
 
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I don't know. Once there is a standard (lol) won't the graphics card be able to decode stuff in hardware?? basicallly negating the need to have a thermal nuclear reactor on your desktop?
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post #22 of 22 (permalink) Old 2007-01-09, 10:38 PM
 
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kremb

You do need a powerful video card to translate the digital signal to a usable signal for the HDMI TV. But first you have to de-encrypt the information on the HD DVD/Blu Ray discs. This encrption, called AACS, is very CPU intensive. The method of encoding also has a bearing of the CPU power. MPEG-2 and VC1 both use the CPU for decoding the info. H264 uses the GPU.

Without the hardware of the GPU, only the most powerful overclocked CPU could handle full load of 1080P signal.
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