GeForce 6800 Ultra

GeForce 6800 Ultra



Jen-Hsun?s comments at the start of the recent NVIDIA Editors Day suggested that they had taken onboard the principals that ATI set forth with R300 of going for a very parallel architecture. As you look beyond the wide pipelined nature of NV40 and begin to look at little more at the pixel shader composition and the various quality options available you begin to see that this is not all NVIDIA have adopted. NV40 is not a particularly revolutionary architecture, but very evolutionary from many of the principals ATI delivered on some 20 months ago, combined with some of the better elements of NVIDIA?s previous architectures.

Such an approach is no bad thing as we can see it has delivered for ATI. However, NVIDIA have taken many of these principals to the next step and evolved them further. The ?Superscalar? nature of the pixel shaders should provide an extra level of flexibility that NVIDIA?s driver compiler should be able to take hold of and increase the shader performance. Although NVIDIA have opted to stick with an ALU that?s also used for texture address processing, this is probably no bad thing either because as shader lengths increase the ration of texture accessed to ALU use will drop, reducing the need for a dedicated texture address processing unit. 
 
Of course, not only do we have the evolutionary steps, we also have some great introductions as well. Higher speed FP32 rendering throughout the pipeline, the introduction of Shader Model 3.0 in hardware and the Higher Dynamic Range Rendering being key highlights that NV4x brings for the first time. As ever, the likelihood of many of these being adopted on a wide scale basis in games in the NV4x lifetime are unlikely, its good to have the options there for those that do and it also puts the capabilities in the hands of developers for the future.


With regards the the performance of GeForce 6800 Ultra we can see that there are massively impressive gains over the FX boards in many cases. We really have reached the point where far too many titles are completely CPU bound, and now high quality options such as FSAA and Anisotropic filtering come for free at much higher levels. However, given this it's still odd that NVIDIA haven't implemented a more effective mode of FSAA beyond 4X FSAA - the rotated grid sampling pattern for 4X FSAA is a welcome addition to NVIDIA's parts though.

Thanks to the new shader pipelines, and the sheer number of them, the shader performance takes a very large performance leap over the FX series. The new Pixel Shader pipelines see very large gains in performance with short length shaders; however, do note that while the performance of longer shaders is still much greater on the 6800 Ultra it does appear that the register space issues aren't entirely removed as witnessed by the performance increases in FP16 performance on longer shaders over FP32.

Naturally, performance will come at a cost and in the case of NV40 one of the main costs is power. While NVIDIA recommends a 480W PSU the test rig here ran fine with GeForce 6800 Ultra on a 450W power supply, though this isn't exactly overburdened with extra components - regardless, it looks like many that wish to run a 6800 Ultra will require a new PSU as well. Heat may be another factor - the test system used here is an open system, so cooling is an issue, yet for those with a closed box may wish to ensure there is plenty of air circulation in there as well.

NV40 appears to be a hugely ambitious piece of engineering and it has certainly seen the benefits in terms of performance in relation to its predecessors. The new technology implementations of Shader Model 3.0 and Higher Dynamic Range rendering are also welcome additions to the technology available to developers, giving them a wider range of flexibilities for next generation gaming titles. When all is said and done, this is a very impressive, and welcome, leap over the FX series.

Link: beyond3d.com

Skrevet af Lasse den 16. Apr 2004. Nyheden er læst 713 gang(e).

Del med dine venner

     

0 kommentarer
Skriv kommentar til nyheden Kommentarer til nyheden fra Facebook

 

EVGA GTX 1080 Ti Super Clocked 2

Alt imens Computex 2017 er igang, producerer vi naturligvis stadig reviews i stride strømme, og i dag skal vi kaste

Læs Mere

Cooler Master Cosmos II 25th Anniversary Edition

Cooler Master fejrer sig 25 års jubilærum med et brag af et kabinet. De fleste af Jer husker sikkert deres Cos

Læs Mere

Netgear Nighthawk X10

Netgear sparker døren ind med den nye 802.11ad Wi-Fi standard, der på papiret giver mulighed for hastigheder

Læs Mere

Blue Ella med indbygget hi-fi forstærker

Dagens test er en vi har set frem til at præsentere for Jer længe. I dag har vi fået lov til at se p&ari

Læs Mere

Corsair GLAIVE RGB Gaming Mus

Når du spiller computer er komforten mindst lige så vigtigt, som et præcist aim i FPS spil. Gutterne hos

Læs Mere

Cooler Master MasterPulse PRO

Der er efterhånden ikke den produkt gruppe hvor Cooler Master ikke har produkter at tilbyde. I denne test dykker vi

Læs Mere

MSI GS73 7RF Stealth Pro

For kort tid siden testede Tweak.dk MSI GT83VR Titan SLI, som inden for det mobile område, er et monster af en

Læs Mere

GUNNAR RPG designed by Razer gaming EyeWear

Det er igen blevet tid til at se på et par gamerbriller fra GUNNAR. I dag skal vi se på en gamingbrille som GU

Læs Mere

 

Nyeste Videoer og Trailers

Seneste nyheder

ZOTAC GeForce GTX 1080 Ti Mini fremvist på billeder

ZOTAC GeForce GTX 1080 Ti Mini fremvist på billeder, og det kunne meget vel være den retning du skal kigge, hv
Læs Mere

Maryville University løb med sejren

League of Legends går en lys fremtid i møde. I weekenden kæmpede nogle af de største talenter om en fornem tit
Læs Mere

Hitman-serien fortsætter måske alligevel

Mange frygter, at det sidste Hitman-spil er blevet udgivet. Sådan kommer det kun til at gå, hvis man ikke find
Læs Mere

ASUS teaser for fremtidigt ROG Strix X299-E bundkort!

ASUS teaser for fremtidigt ROG Strix X299-E bundkort!
Læs Mere

Alliance signer "Pablo"

Axel ”Pablo” Källman er blevet hentet til Alliance. Han skal forsøge at løfte Dota 2-holdet til nye højder.
Læs Mere

Acer lancerer imponerende gaming-skærm

Acer har nyt guf til gaming-gutterne. Denne gang er det i form af en ny avanceret gaming-skærm.
Læs Mere

MSI løfter sløret for ny gaming-computer

MSI har før været garante for gode gaming-produkter. Nu er man klar med endnu et i form af en ny computer.
Læs Mere

Andy Rubin og Essentiel har ny smartphone på vej

Det går ganske godt for Andy Rubin og Essentiel, der arbejder på at have en ny smartphone klar i slutningen af
Læs Mere
Partner sider
Indsend nyhed
Har du fundet en fed nyhed så indsend den så alle andre på Tweak.dk kan få glæde af den.