* 1 Go de GDDR5
    * ATI Eyefinity : support de trois moniteurs
    * ATI Stream
    * Conçues pour DirectCompute 5.0 et OpenCL
    * Accelerated Video Transcoding (AVT)
    * Compatible avec DirectX® 11 et les versions précédentes
    * Supporte OpenGL 3.1
    * ATI CrossFireX™
    * ATI Avivo™ HD
    * Gestion dynamique de la consommation avec la technologie ATI PowerPlay™
    * Dual Link DVI, DisplayPort, HDMI
    * PCI Express® 2.0
 
Rumeur ou véritables informations ? On connaitra la réponse lors du lancement de ces nouvelles cartes graphiques...

Chiphell have got their hands on pictures of AMD/ATI's much anticipated next-generation DX11 cards, codenamed "Evergreen", releasing September 10th.
 
ATI have done away with the numerical RV***/R*** nomenclature and are only calling them by codenames now. There will be four classes of the Evergreen range - performance "Cypress", performance-mainstream "Juniper", mainstream "Redwood" and entry-level "Cedar". The flagship will be the dual-chip Cypress, codenamed "Hemlock". On a side note, all these codenames are derived from coniferous trees, which are incidentally 'evergreen', or have leaves all year round. It is clear that ATI have great confidence in the upcoming generation.
 
The first set of pictures are reportedly of "Juniper" or RV840, the successor to the Radeon HD 4770, in the mainstream segment. Indeed, the cooler is very reminiscent of the original dual-slot stock cooler on the 4770, this time with black outfitting, on the PCB as well. At the rear end is a host of output ports, what looks like 2x DVI ports, an HDMI and a Displayport. It is worth noting that the exhaust vent only takes half the space on one slot - which might indicate an efficient and cool (thermally as well as aesthetically) card. Juniper does, however, come with a 6-pin power connector, which would indicate a TDP above 75W, if barely so (like the 4770).
 
In the performance segment, ATI are offering "Cypress" or RV870, which will succeed RV770/790 (HD 4800 series), rumoured to be branded as ATI Radeon HD 5850 and 5870. The heatsink and top view pictures are available. It is unclear if this is the high-end Cypress XT, and of course, these pictures should be taken with a grain of salt. Unlike the Juniper cooler, which is similar to a design introduced for the 3870 - the Cypress cooler seems novel. The Cypress card does seem to be longer than the reference 4850/70/90, which were in the 9" range. It would appear as long as the 4870 X2 or the GTX 200 cards, which are in the 10.5" range. The die size does not appear to be as large, definitely much smaller than nVidia's GT200 chips, and around the same size as RV770, at first glance. Which would beg the question, did ATI really need a full length cooler? If so, what kind of cooling would the rumoured dual-chip "Hemlock" require? It is quite possible ATI is playing it safe, as one of the major criticisms of the 4800 series was the high temperatures. It requires 2 x 6-pin connectors, which would suggest a TDP of between 150-200W, much like the 4870/90. The rumoured system requirements suggest a 500W PSU, or 600W if running in dual-card CrossfireX mode. So, the power requirements seem reasonable and within the range of the 4800 series.
 
According to rumours, these could possibly be the specifications:
 
Cypress - 1600SP, 256-bit, 80 TMU, 32 ROP
Juniper - 800SP, 128-bit, 40 TMU, 16 ROP
 
These specifications do seem realistic. However, ATI have a history of spreading false rumours about their cards. (Remember RV770? They convinced the entire world the card had 480SP, when in fact they had 800SP!) A significant step forward for ATI would be the 32 ROPs (render output units) on the RV870, if indeed these rumours are accurate. All ATI high-end GPUs have sported 16 ROPs since the X800 series way back in 2004.
 
RV830's specifications are a dead match for the RV770 4800-series, except for the 128-bit. Considering the 4850 was largely bottlenecked by the slow GDDR3, and significantly outperformed by its GDDR5 siblings (4870/90) even adjusted to similar clock speeds, ATI must surely be using unprecedentedly high frequency GDDR5 memory for both GPUs - possibly reaching 5 Gbps. This would put the memory bandwidth in the region of 150 GB/s for RV870. For a 1600SP monster, there might still be a bottleneck. There have been rumours of a 384-bit memory bus in the past as well. No clock speeds have been revealed thus far, and all leaked speculations should only be considered as rumours.
 
At this stage, the Evergreen generation looks promising, and ATI have a good headstart over nVidia's rumoured GT300 series, which are taped out and will only be arriving mid Q4-09 at the earliest.

Suggested System Requirements for Radeon HD 5870
 
Seems like the power requirements for the upcoming DX11 aren't too demanding. You will just need a 500W PSU with two 75W 6-pin power connectors for a single card and a 600W PSU for Crossfire setup. The photo leaked out earlier on the web seems to be right. The requirements are similiar to that of the Radeon HD 4890 and HD 4870 cards so you need not change your parts if you are upgrading from those cards.
 
    * PCI Express® based PC is required with one X16 lane graphics slot available on the motherboard
    * 500 Watt or greater power supply with two 75W 6-pin PCI Express® power connectors recommended (600 Watt and four 6-pin Connectors for ATI CrossFireX™ technology in dual mode)
    * Certified power supplies are recommended
    * Minimum 1GB of system memory
    * Installation software requires CD-ROM drive
    * DVD playback requires DVD drive
    * Blu-ray™ playback requires Blu-ray drive
    * For an ATI CrossFireX™ system, a second ATI Radeon™ HD 5870 graphics card, an ATI CrossFireX Ready motherboard and one ATI CrossFireX Bridge Interconnect cable per graphics card (not included) are required

ATI are offering "Cypress" or RV870, which will succeed RV770/790 (HD 4800 series), rumoured to be branded as ATI Radeon HD 5850 and 5870 [...]

Cypress - 1600SP, 256-bit, 80 TMU, 32 ROP

Seems like the power requirements for the upcoming DX11 aren't too demanding. You will just need a 500W PSU with two 75W 6-pin power connectors for a single card and a 600W PSU for Crossfire setup. The photo leaked out earlier on the web seems to be right. The requirements are similiar to that of the Radeon HD 4890 and HD 4870 cards so you need not change your parts if you are upgrading from those cards.

HD5800-Serie offiziell am 22. September
 
Wie uns aus Unternehmenskreisen berichtet wurde, wird die HD5800-Serie oder auch als RV870 bekannt am 22. September erscheinen und auch verfügbar sein. Der 10. September, wie von vielen Seiten berichtet wurde, soll die Karte mehreren Interessensgruppen, wie der Presse, vorstellen, jedoch noch zu diesem Zeitpunkt nicht für die Öffentlichkeit zugänglich sein.
 
Wie sich diese Information als Wahr herausstellen wird, werden wir in den nächsten Wochen sehen.

La relève approche ! Alors que l'objet de  la conférence tant attendue du 10 septembre a finalement été démenti par AMD, de nombreuses informations ont filtré concernant la nouvelle génération de cartes graphiques DirectX 11 nom de code Evergreen.
 
ATI, la division carte graphique d'AMD, préparerait ainsi quatre nouvelles puces désormais baptisées d'un nom de code et non d'une simple référence du type RV870. On retrouverait la puce Cedar en entrée de gamme, la Redwood en milieu de gamme, la Juniper pour les joueurs du dimanche et la Cypress haute performance. Une carte graphique nom de code Hemlock combinant deux puces Cypress serait même prévue.
 
La puce Juniper, ou RV840, équiperait donc l'héritière de la Radeon HD 4770. Elle intègrerait 800 processeurs de flux, 40 unités dédiées aux textures et 16 unités de rendu sur une interface 128 bits. Les premières photographies révèlent par ailleurs un connecteur d'alimentation à 6 broches, pour une consommation dépassant vraisemblablement les 75 watts qu'un port PCI Express 2.0 peut fournir, bien que la grille d'aération de petite taille suggère une dissipation thermique et des nuisances sonores raisonnables. Cette puce prendrait enfin en charge deux sorties DVI Dual Link, une sortie HDMI et une sortie DisplayPort.
 
La puce haute performance Cypress autrefois baptisée RV870 serait quant à elle déclinée en deux modèles, qui pourraient être commercialisées sous l'appellation ATI Radeon HD 5850 et 5870. Elles intègreraient quant à elles 1600 processeurs de flux, 80 unités dédiées aux textures et 32 unités de rendu épaulés par 1 Go de mémoire GDDR5 sur une interface 256 bits. Bénéficiant d'un nouveau système de refroidissement encore plus imposant, ces cartes graphiques auraient recours à deux connecteurs d'alimentation, pour une consommation comprise entre 150 et 200 watts. On retrouverait la même gamme de sorties avec cette fois la prise en charge de trois écrans simultanés.
 
L'annonce de cette nouvelle génération de cartes graphiques nom de code Evergreen est désormais attendue aux alentours du 22 septembre, pour une commercialisation concordant avec le lancement de Windows 7, le 22 octobre.