Re: HDTV stuttering

Dave and Robert,

Is the data in the following article correct?

http://www.a1-electronics.net/Graphics_Cards/GeForce/2005/GeForce_6600_Apr.shtml

and if not why not?

"Pete Delgado" <Peter.Delgado@xxxxxxxxx> wrote in message
news:%23pg1yS1dFHA.720@xxxxxxxxxxxxxxxxxxxxxxx
>
> "Robert Schlabbach" <robert_s@xxxxxxx> wrote in message
> news:O$TtbpxdFHA.1384@xxxxxxxxxxxxxxxxxxxxxxx
>> "Pete Delgado" <Pete@xxxxxxxxx> wrote in message
>> news:Oh1ci3tdFHA.2520@xxxxxxxxxxxxxxxxxxxxxxx
>>> Unfortunately, the 6600 which he states that he bought, does not meet
>>> the minimum requirement for memory bandwidth as required by Microsoft.
>>> The base PCI-X 6600 has a memory bandwidth of 8.8GB/s
>>
>> Did you calculate that number as (buswidth/8 * memclk)? 128/8*550 would
>> be
>> 8.8GB/s, but the base PCIe 6600 memory clock is 500MHz, and the memory is
>> *DDR*, so it is (buswidth/8 * memclk*2) = 16GB/s memory bandwidth. The
>> AGP
>> version only has a memory clock of 450MHz, thus yielding 14.4GB/s.
>>
>> You'll find those numbers on the official NVIDIA website here:
>>
>> http://www.nvidia.com/page/geforce_6600.html
>
> Those numbers are for the 6600 GT model, not the *base* 6600 model. I
> took my numbers from one of the manufacturers web sites as many times
> Tom's hardware guide will show the theoretically possible numbers, but
> each manufacturer will achieve slightly varying results based upon their
> implementation of the reference design.
>
>>
>>> I'll be testing an XFX 128MB 6800 card soon that retails for just
>>> over $200. For the money, it appears to be a good multi-purpose
>>> card for MCE and gaming.
>>
>> Isn't the 6800 the chip with the broken video engine in which exactly the
>> HDTV acceleration doesn't work? According to NVIDIA, the 6600 has the
>> bugfixed video engine, so I'd say the 6600 is the better choice if you
>> want
>> both video acceleration as well as 3D gaming.
>
> I had understood that to be the case with the earlier 6800 boards. It
> seems that the on-board HDTV accelerator was disabled via software due to
> some problems. I'll contact XFX or NVIDIA just to make sure they are
> fixed.
>
> Do you have links to information about the bug in the 6800?
>
> -Pete
>


.

Relevant Pages

  • Re: HDTV stuttering
    ... What is on-board HDTV acceleration? ... >> Isn't the 6800 the chip with the broken video engine in which exactly the ... According to NVIDIA, the 6600 has the ...
    (microsoft.public.windows.mediacenter)
  • Re: HDTV stuttering
    ... | The Nvidia NV43 6600 is a native PCI Express video graphics processor ... For the AGP GeForce 6600 graphics card ... | versions Nvidia use a PCI Express to AGP bridge chip. ... Will it be the original AGP chip with the broken video engine, ...
    (microsoft.public.windows.mediacenter)
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