GeForce 6800 onboard video processor functionality

[dreden]

Reader Question: I've read at a number of sites that the video processor on the 6 series GPUs was "somewhat broken," but I've never heard any specifics. If you're willing to, could you share with us exactly how this processor was broken? I just picked up a 6800 GT, so this would be very nice to know.—felraiser

 

David Kirk: Well, the first thing that I would say about "I've read at a number of sites..." is that you shouldn't believe everything that you read! The video processor of the series 6 GPUs is just that—a processor—and it runs software for video encoding, decoding, and image processing and enhancement. The GeForce 6 series video processor is a new processor, the first of its kind, and there was no legacy (pre-GeForce 6) code to run on it. At the time the original GeForce 6800 shipped, very little new code had been written for the new processor. So, for early GeForce 6800 customers, there was little or no improvement in video quality, performance, or reduction of CPU usage.

 

As time goes on, more and more software is written and optimized, so that more and more video functions are enabled (turned on). Newer drivers show better performance and quality on video encoding and decoding tasks. In fact, recent reviews show the video quality of the GeForce 6 video processor to be comparable to the quality of consumer electronics video devices. That's a first for a PC video product. Also, each successive product in the GeForce 6 family has the benefit of more learning and more development time, so that we can continue to improve the processor design, instruction set, and performance. So, you can expect to see continued improvements. As to the GeForce 6800 video processor being "broken," I wouldn't say that. Continued . . .

[Lch]

Pfft. Et typisk svadasvar. Ro, ro til fiskeskjær.

[dreden]

Men uansett HVIS det virker så MÅ det jo finnes software som kan utnytte video prosessoren.

[PapstSkalle]

Er denne David Kirk en som jobber for nvidia? At han ikke direkte blånekter for at 6800 videoprosessoren er "broken" tyder jo på at den ikke er helt optimal...oh well...jeg har da opp til 3 andre dvd spillere så det er strengt tatt ikke så nøye foreløpig, men når hdtv gjør seg mer gjeldende hadde det vært gjevt å kunne nyte godt av 6800 kortet for å se ting i high def på monitorn...

[Lch]

Men uansett HVIS det virker så MÅ det jo finnes software som kan utnytte video prosessoren.

Det er jo det. MPEG-2-avspilling funker knallbra i alle avspillere med DxVA-støtte (PowerDVD, WinDVD, FusionHD, nVidia DVD-dekoder etc). Men det er det eneste vi får også, sannsynligvis. Bla litt bakover i tråden og kikk på resultatene jeg postet ved avspilling av HD-kilder.

[Ravn]

Lurer på om en ny offisiell driver vil gjøre susen? Iom. at den siste driveren ble gitt ut for over 3 måneder siden... (der har de mye å lære av ATI...1 i måneden... det er service...)

[svalbard]

Lurer på om en ny offisiell driver vil gjøre susen? Iom. at den siste driveren ble gitt ut for over 3 måneder siden... (der har de mye å lære av ATI...1 i måneden... det er service...)

Hjelper ikke med en ny driver en gang i måneden hvis ikke det er noe nytt. Føler litt at ati bare gir ut driver for å gi ut en i måneden. Men jeg kan godt ta feil.

[ExcaliBuR]

Hjelper ikke med en ny driver en gang i måneden hvis ikke det er noe nytt. Føler litt at ati bare gir ut driver for å gi ut en i måneden. Men jeg kan godt ta feil.

Nja, å beskylde ATi for "bedrageri" ("tomme" drivere) er vel å gå litt langt, men virker som om enkelte aldri blir fornøyde. ATi fikk enorme klager først på driveroppdateringer og at det var lenge mellom hver gang og at de var dårlige.

 

Nå når de gir ut en gang i måneden så begynner folk å klage på at det blir for mye.

Det blir fiksa bugs til hver enkelt oppdatering, eller hastighetsøkninger, eller tilogmed begge deler mellom hver driver. Baserer seg vel på "naturlig utvalg", de pøser ut drivere og folk velger den driveren som passer seg selv best

[dreden]

"PureVideo Technology Is

Programmable to Adapt to New

Standards

The heart of the GeForce 6 Series video improvement is a powerful 16-way SIMD

vector processor optimized for macroblock-oriented video processing algorithms

and YUV video data formats. This video processor builds upon the dedicated hardwired

circuits of earlier NVIDIA GPUs for MPEG-2 decode, color space

conversion, video overlay, and high-quality video scaler (Figure 1). It accomplishes

this by adding programmability that addresses new video formats (such as WMV9),

and future formats such as MPEG-4, plus H.264 for high definition.

Video shaders are programmable arithmetic processors that are typically used for

performing 3D graphics operations at the pixel level. GeForce 6 Series

programmable pixel pipes are perfectly suited for performing various video

improvements in post-processing video operations in RGB color space. The

resulting implementation offers enhanced video quality and video functionality. The

more functions implemented on-chip as programmed video processor functions, the

better the overall system performance during video operations."

 

"The GeForce 6 Series of GPUs is capable of hardware video encode acceleration.

Video encode is a difficult and time-consuming process. The power of the GeForce

6 Series of GPUs greatly reduces the time involved, and ensures the quality of the

compressed video is top-notch."

 

Dette står faktisk i ett PDF på nvidia.com http://nvidia.com/object/IO_16213.html

 

-------------------------------------------------------------------------------

 

Adaptable Programmable Video Processor

PureVideo’s programmable technology adapts to new video encoding formats as they are developed to provide a future-proof video solution.

 

High-Quality Real-Time Video Recording

Get full digital video recording functionality without losing data. With NVIDIA PureVideo technology, high-quality recording preserves picture detail while also using minimal space to store videos on the hard drive.

 

http://nvidia.com/page/pg_20041215177473.html

Endret 11. februar 2005 av dreden

[dreden]

Er denne David Kirk en som jobber for nvidia?

 

Ja

Endret 11. februar 2005 av dreden