ATi R8xx - informace, novinky, spekulace

[no-X]

...a zbytek je z Phenomu

The row of memory interface pads at the top is cropped from the Phenom die-shot, as well as the middle block thingy (which is from the HyperTransport hub).

[Krteq]

Heh, nice catch... ale kreativita se tvůrci upřít nedá

[Sobo]

K čemu jsou tyhle fejky vlastně dobré? To jen někdo neměl co dělat, nebo to má nějaký vyšší smysl?

[DEVastor]

Mě jen udivuje, že té mazanici někdo věřil.

[no-X]

Jsou dobré k tomu, že zvyšujou návštěvnost webu (reklama->příjmy), který je vytvořil/publikoval. A pak se samozřejmě objevují reakce na ně, které ale nejsou míněné vážně.

[no-X]

Chystá ATi kartu se třemi čipy, nebo se třemi výstupy?

ATI's Evergreen has six members
The last card is called...... Trillian

WORD IS HITTING the street about the last ATI Evergreen card. The top 5 were recently named, but there is a sixth lurking in the shadows.

The new card is called Trillian, and it is supposed to be at the top of the heap. It is a card name, not a new ASIC, so don't expect any new silicon. Just like Hemlock is two Cypresses on a board instead of a new chip, Trillian is also made up of existing silicon.

The name has some interesting connotations, the first three letters of which are 'tri'. That leaves two interpretations, the most obvious of which is a three GPU board. There have been a few demos here and there of three GPU boards, but nothing that ever made production.

Given that the interconnect on the 3870x2 and 4870x2 are simple PCIe-2 switches, it should be pretty easy to do a three-way board. A 16x PCIe-2 slot is more than capable of providing the needed bandwidth, even with Cypress's immense shader count. This scenario is pretty doubtful though, a 3x Cypress board would run into power limits unless ATI pulled off some serious magic that the TSMC 40nm process seems currently (pun intended) incapable of providing.

The more likely Trillian board is a multi-monitor card that has been spoken about as far back as Computex. Multiple outs fit into existing leaks quite well, but what chip it is based on is quite another question entirely.

http://www.semiaccurate.com/2009/08/11/ ... x-members/

[no-X]

10. září vždyzelenými konat Pre-Spustit Událost Evergreen párty

alespoň to na základě následujícího threadu tvrdí google translator

http://bbs.pczilla.net/thread-3685-1-1.html

[Syntex]

Tak v kolik pojedeme?

[no-X]

Má to smysl? Čekal bych vydání do týdne poté (±), takže by to stejně nemělo smysl. Určitě nebude pre-launch party měsíc předem, protože za tu dobu by se všechno rozkecalo a zájem by opadl.

[Krteq]

Bude mít RV870 384-bit sběrnici?

...This could indeed be possible, concerning that the RV770 is already quite dependent on bandwidth and the RV870 is expected to have twice the computing power. Also the recent information that the chip would be bigger than 300 mm², affirms the theory of 384 Bit memory interface, because already the dimensions of the RV770 would have made it impossible there...

...Because of the shortly upcoming launch it is hardly due that AMD will use GDDR5 memory on their top cards, which runs faster than 1.25 GHz. So it would be possible to reach a maximum of 240 GB/s memory bandwidth with the 384 Bit memory interface, more than twice as much as the HD 4870 would reach.

Více na Hardware-infos
_____________________________________________________________________________________________
RV8xx na Quakeconu, AMD rozesílá samply

...You might have heard rumors of some odd memory configurations going around and a source close to AMD has confirmed this. Numbers are pointing to something like 384-bit and GDDR5 with the high-end X2 part, 192-bit and GDDR5 with the performance part, and then scaled down to 96-bit and perhaps even 48-bit with lower-end parts. The numbers are still pending confirmation, but we are quite confident AMD will bring some odd memory configurations to the market with Evergreen.

Names and specifications are just waiting to be leaked, but so far they are still hard to confirm. It does however look like RV870, Cypress, will sport something in the range of 1600 shaders, 80 texture units and 32ROPs, with RV830, Redwood, at 800 shaders, 40 texture units and 32ROPs and Cedar at slightly less. These numbers are mainly speculation at this point.

However, we did learn at that AMD has a card with performance better than Radeon HD 4850 but consuming less than 75W. We would expect this to be a flavor of Redwood, RV830. Evidently, AMD has mastered the 40nm process and managed to reduce power consumption while maintaining good performance....

Více na NordicHardware

[fobos]

zdá sa to ako rozumný krok. 256bit by čip brzdilo

[no-X]

Nesouhlasím, současné modely GDDR5 jsou to nejpomalejší, co výrobci nabízejí, takže rezervy jsou slušné. Mimochodem, jak jde dohromady 32 ROPs s 384bit sběrnicí? Žádný z doposud používaných řadičů něco takového neumožňuje

[Krteq]

Taky by mi tam sedělo spíš 24 ROPs.

[blekota je boss]

treba tam ani zadny ROPs nejsou no ale ATi delala vetsinou cipy tak, aby se tam sbernice akorat vesla...
mesic pred vydanim a nic se poradne nevi... letos je to bida...

[beardie]

48 ROPs by tiez slo nie?

[Krteq]

Jop, to by šlo taky. Možná by to byl trochu overkill, ale kdo ví...

[no-X]

Jo. Jenže jednou zmiňuje 384bit sběrnici v souvislosti s čipem, a pak s X2 kartou. Mají v tom chaos.

Krom toho neliz na B3D mluví o tom, že 180mm² čip nebude mít 800SPs, ale 640. Mělo by smysl k čipu s 640SPs používat 192bit sběrnici? Taky se mluví o tom, že 300mm² čip bude větší, než 300mm². K tomu ten rozpor mezi 32 ROPs a 384bit sběnicí... některé z těch informací jsou špatné

Když bychom na teoretické úrovni mluvili o 384bit sběrnici, mnohem víc by se mi líbilo 48 ROPs než 24, ale to už by bylo opravdu dost. Nevím, no, ale já osobně bych byl nejspokojenější s 32 ROPs, 256bit sběrnicí a rychlejšími pamětmi. 48 ROPs a 384bit sběrnici dávám na druhé místo a 24 ROPs + 384bit na třetí...

Překvapuje mě ale, že se začalo mluvit o 192/384bit sběrnici, kterou jsem očekával, než se začalo mluvit o MCM...

[blekota je boss]

chran nas panbuh!

[no-X]

A stále žádný specifikace jednotlivých čipů? Zkusím uplácat alespoň nějaký odhad

RV810
~100mm²
96bit
64 5D ALUs (320 SPs)
16-32 TMUs
6-12 ROPs
512MB

RV830
180mm²
192bit
128 5D ALUs (640 SPs)
32 TMUs
24 ROPs
768MB

RV840
~235mm²
256bit
240 5D ALUs (1200 SPs)
60 TMUs
32 ROPs
1024MB

RV870
~340mm²
384bit
320 5D ALUs (1600 SPs) nebo 400 5D ALUs (2000 SPs)
80 TMUs nebo 100 TMUs
48 ROPs
1536MB

[Lukfi]

U RV810 máš chybu, sběrnice musí být buď 64 nebo 128 bitů, ne 96.