AMD volcanic islands specifications leak? (rumor)

[blackened23]

From chiphell:

Leak states the following:
20nm
16X SPU
4X ACE
4096SP
256TMU
64ROPs
512Bit

Source: chiphell http://www.chiphell.com/thread-743744-1-1.html

Those specs are insane if true, jeez.

 

[Attic]

Would love if this gets confirmed.

 

[VulgarDisplay]

They said they wanted to start an all out brawl with Nvidia. Those specs like a good way to start it. Way more ROPs then I was expecting.

 

[Borealis7]

that's a 7990-amount of shaders that is. plausible at the very least.
but it doesn't take a crystal ball to assume we will see a 7990-in-one-chip card in the next generation especially since there is a process shrink involved.

 

[boxleitnerb]

That would be quite a big GPU. 450mm2 or possibly more. I don't think that is feasible so early in the 20nm game.

 

[Silverforce11]

That would be quite a big GPU. 450mm2 or possibly more. I don't think that is feasible so early in the 20nm game.

Why would it be that big? Tahiti on 28nm is only 365mm2.

 

[boxleitnerb]

Tahiti is about as big as Cayman with the same amount of ROPs and 33% more SP and TMUs and a 50% larger memory interface.
Now this Hawaii (?) chip has 100% more SPs, TMUs and ROPs, these additional SPMs and a 33% wider memory interface (memory interfaces do not scale since a certain size is required for all the lanes to the VRAM). If they put all that into 400mm2 or less, hell freezes over
I think we're talking 10 bn transistors here.

Cayman: 389mm2 and 2.64bn transistors -> 6.79m/mm2
Tahiti: 365mm2 and 4.3bn transistors -> 11.78m/mm2

That's an increase in density of about 74%. If we assume the same is true for 20nm, we'll have about 20.5m/mm2. 10bn/20.5m/mm2 = 488mm2

 

[Silverforce11]

Please don't compare Cayman to Tahiti like that. VLIW4 vs GCN is apples vs oranges.

Compare GCN 1 vs 2, doubling everything with a node shrink = ??

 

[boxleitnerb]

Then look at 5870 vs 4890 (both VLIW5). 282mm2 vs 336mm2 -> 20% increase with doubling everything - except the memory interface and none of these SPMs that take up space, too. No matter how you look at it: That's going to be one big chip.

 

[Silverforce11]

I believe they added dx11 support and as well as the tessellator with the 5870.

Regardless, I think its about time AMD went with a big die approach for the high end and give up the non-sense idea of CF two small dies to seal the top dog, its just not working out for them.

 

[Fx1]

20nm uses larger wafers i think so maybe AMD plans to get bigger chips on the bigger wafer to reduce the cost rather than big chips on a smaller wafer

 

[boxleitnerb]

Wafer sizes are the same, next step is 450mm in like 5-10 years at the earliest.

 

[BrightCandle]

28nm to 20nm is a full node jump, it should almost double the number of transistors available. The specs show only some components are going to double in size, many like the memory wont have to as they are already at 384 bits.

It looks plausible.

 

[PingviN]

Regardless, I think its about time AMD went with a big die approach for the high end and give up the non-sense idea of CF two small dies to seal the top dog, its just not working out for them.

To be fair, HD7970 is 365mm^2, quite a bit larger than the 294mm^2 GTX680. If "small" die isn't working for AMD, then massive chip strategy isn't working for Nvidia as they abandoned it when GTX580 EoL:d. Excluding the Titan, but that is such a niche product.

 

[3DVagabond]

If that's correct I'll be very surprised. Impressed, too. That chip is heavy artillery.

 

[boxleitnerb]

In the XS forum they found a eerily similar picture in a post in the SA forum from September 2012:


http://www.semiaccurate.com/forums/showpost.php?p=168728&postcount=7

So probably fake or something else entirely. If you look closely, the memory controllers on both pictures say 72-bit (ECC) DDR3.
My guess would be it's an Opteron APU.

 

[lagokc]

That's over 1000 more SPs than I would guess for their $500 card. If this is true then I'm guessing it's going to be an attempt to take back part of the HPC/Professional market and this isn't going to be their gaming card unless they release a $1000 Titan competitor. The 512-bit memory bus alone means this is going to be one big expensive chip.

Maybe we'll see a cut down 3072 SP version at $500-600

 

[Olikan]

the image is an Opteron chip, or a HPC layout...

have 16 "bulldozer like" cores (or 8 modules if you like)
1024 shaders
ARM-A5 security chip
Trinity like UNB

strange things: (GCN 2.0 features?)
4 ACEs
UVD 3.2
VCE 2.0

 

[Will Robinson]

20 nm
If it's big die and 20 nano its gonna be a planet buster!

"They might be Titans...but WE ARE GODS."

 

[Rvenger]

AMD is building there own version of the Titan Probably will be a mining beast too.

 

[SlowSpyder]

Then look at 5870 vs 4890 (both VLIW4). 282mm2 vs 336mm2 -> 20% increase with doubling everything - except the memory interface and none of these SPMs that take up space, too. No matter how you look at it: That's going to be one big chip.

I don't know how much it matters for the point you're trying to make, but for whatever it is worth, the 5870 was VLIW5, not VLIW4 like the 69xx cards.

 

[lagokc]

AMD is building there own version of the Titan Probably will be a mining beast too.

2.5x the mining performance of a 7950 for 3.3x the money sounds fast but not cost effective.

 

[AtenRa]

In the XS forum they found a eerily similar picture in a post in the SA forum from September 2012:


http://www.semiaccurate.com/forums/showpost.php?p=168728&postcount=7

So probably fake or something else entirely. If you look closely, the memory controllers on both pictures say 72-bit (ECC) DDR3.

My guess would be it's an Opteron APU.

Or PS4

It has 8 CPUs and 16x 64 = 1024 Radeon cores (like HD7850) but double the front end (ACEs and Tessellation) and double the Memory Controllers.

The only part I find peculiar for the PS4 is the ECC memory.

 

[Smoblikat]

If this is true I am in for at least 2.........any idea on VRAM?

 

[Olikan]

Or PS4

probably no...

zoom in, in one cpu core...

it have 2 cores with 1 fpu and shared L2 cache... smells like a CMT design
and they are linked to a shared L3 cache, so it's expected a heavy duty here

with leads to...16 cores and truck loads of L3 cache

it is overkill cpu power for a gaming machine....