AMD: R8xx Speculation

[leoneazzurro]

Who said its exactly 2TFLOPs? Maybe HD5850 ist 1600SPa@675MHz and HD5870 is at 850MHz+.

In fact, I wrote it in the following of my previous post.

 

[leoneazzurro]

170% of RV770 sounds about right.. as a start.

1360 SP for 5850 and 1600 for the 5870?
Hmm... so it will be 750 MHz for the 5850 and same or more for the 5870.

 

[Power_man]

 

[SimBy]

Is this presentation real? So thats 1600.

 

[neliz]

They couldn't keep the background black?

 

[w0mbat]

Haha, u see that writing down there? I think its saying "ComputerBase" and that means its old. It was "Smarter Choice" under the AMD Logo but it was chopped with "The Future is Fusion" as u can see with the BG color.

http://www.computerbase.de/

 

[Kaotik]

http://www.pikipimp.com/pp/pimped_photo/s/image/46/792/613/cp09.JPG?ts=1251127838792

So 1600 SPs it is, then?

edit:
Oh, might be fake then, after all?

 

[sc3252]

Is this presentation real? So thats 1600.

If it is true it does seem to have 1600. Only thing that gets me is that it doesn't seem color full enough for an AMD slide. Kinda reminds me of graphs and such from Chinese sites.

 

[SimBy]

Yeah it does look kinda fake.

 

[no-X]

It can always surprise me, when a person, who can draw such a nice diagram, is unable to remove a logo and use correct colours...

 

[wishiknew]

Even if its fake, where's uvd. Is it that top red box?

 

[rpg.314]

All those gotchas not withstanding, I blew up the image and I saw these unique things (not in rv7xx),

-Parallel DMA engine
-Memory Read/Write cache
-Stream output reduction buffers
-Video controller
-1 less display controller
-no sideport
-no uvd
-Programmable tessellator cache
-Something that looks like Isaard controller. I have no idea what exactly it is?

 

[Kaotik]

The "video controller" would no doubt be or include UVD, if it was real

 

[mczak]

Rumour-ish:
• ATI Eyefinity technology with support for up to three displays

Oh, so 3 independent display controllers? Would be very nice.
Every radeon (except the very first one, r100, so only since rv100) had two display controllers. (And it's a very similar story on the green side, every card since GeForce 2 MX / GeForce 4 (not GeForce 3) had two display controllers.)
That's 8 years now we've been stuck with 2 display controllers (ok there was an even longer time graphic cards only had 1...)

 

[sc3252]

Ok, lets play along and say its real. Did the rv770 have so many different caches? That digram says it has L2 cache, L1 texture cache, z stencile cache, and color cache. Does that sound right?

Whenever I read discussions on the different caches on the rv770 I always got the impression they were all read only(true?). Would all these caches still be read only, or is there something in there that says OMG this is totally BS for a gpu?

 

[rpg.314]

There's nothing out of the ordinary. But considering this (rv8xx) is supposed to be a radical change, it seems downright tepid.

 

[mczak]

Ok, lets play along and say its real. Did the rv770 have so many different caches? That digram says it has L2 cache, L1 texture cache, z stencil cache, and color cache. Does that sound right?

Sounds quite right. I wonder though, apart from 1600SP it would also say 4 quad-rops. I thought "everybody" agreed rops would probably be doubled to 32.

 

[Kaotik]

There's nothing out of the ordinary. But considering this (rv8xx) is supposed to be a radical change, it seems downright tepid.

Based on the interview it's not necessarily "radical change", the "RV770" was mentioned as good starting point, and only one part of the core was specified to be over twice as complex as RV770's, the (main(?)) scheduler.

 

[no-X]

It has to be the most radical change since R600. But I'm not sure, who said it - Eric Demers?

 

[rpg.314]

Based on the interview it's not necessarily "radical change", the "RV770" was mentioned as good starting point, and only one part of the core was specified to be over twice as complex as RV770's, the (main(?)) scheduler.

The scheduler could conceptually be in that scheduler block. They are not to scale after all....