AMD HD7970 specs - Early Predictions

a guess by someone i think. not sure.

Stream Processors 3048
Texture Units 128
ROPs 64
Core Clock 1020MHz
Memory Clock 1.7GHz (6.8GHz effective) GDDR5
Memory Bus Width 256-bit
Frame Buffer 2GB
FP64 1/4
Transistor Count 3.2B
Manufacturing Process TSMC 28nm
1x6,1x8 pin power, TDP 250W
Price Point $369US

AMD Radeon HD 7970 (28nm) Southern Islands - Overclockers Australia Forums

re: AMD HD7970 specs - Eraly Predictions

Just a wild guess.

re: AMD HD7970 specs - Eraly Predictions

SP no is almost doubled. but if you keep the die size at 380mm (HD6970), it looks possible.

re: AMD HD7970 specs - Eraly Predictions

Only things that look certain are the RAM, memory bus width and manufacturing process and may be the PCI-e power connectors.

re: AMD HD7970 specs - Eraly Predictions

Isn't that a 6990? Interesting.

re: AMD HD7970 specs - Eraly Predictions

My guess is shader count will be 2000 or a little higher. We will know in another 6 months.

re: AMD HD7970 specs - Eraly Predictions

Skud said:
My guess is shader count will be 2000 or a little higher. We will know in another 6 months.

Yeah, I think that will be 2048 around, temps will be lesser, production should start on 1H 2012, so like first quarter or 2nd quarter of 2012. Should we survive that :grin:

Re: AMD HD7970 specs - Eraly Predictions

^^ with 28nm fab they may OC even better ;-)

Re: AMD HD7970 specs - Eraly Predictions

With 28nm fab, shouldn't TDP be lower? It is 250 W here which looks dubious.

But as per the xbitlab, AMD 7 series is gonna have same VLIW4 design, not the architecture they have showcased. Their 8000 series is gonna have the (scalar+Vector) architecture.

something looks fishy here

Specs for AMD Radeon HD 7990 disclosed? Â» hw-lab.com

:shock:

Jaskanwar Singh said:
Specs for AMD Radeon HD 7990 disclosed? Â» hw-lab.com

You all know this means nothing right? Everyone(I do mean everyone) thought 6970 would have 2048 shaders or similar, remember how much it got in the end?

tkin 6970 had less shader count than expected because Cayman was originally designed for 32nm fab. but due to probs or whatever amd had to move to 40nm and thus had to give up on SIMDs and pcie 3.0 support etc etc.

you may read detail here -
AnandTech - AMD's Radeon HD 6970 & Radeon HD 6950: Paving The Future For AMD

I wouldn't be surprised when the 3048 SPs gget magically converted to

some xx CUs (compute units, to the guys who don't read much)

Jaskanwar Singh said:
tkin 6970 had less shader count than expected because Cayman was originally designed for 32nm fab. but due to probs or whatever amd had to move to 40nm and thus had to give up on SIMDs and pcie 3.0 support etc etc.

you may read detail here -
AnandTech - AMD's Radeon HD 6970 & Radeon HD 6950: Paving The Future For AMD

If TSMC screwed with the 40nm fab, ditched the 32nm fab, what makes you sure they will deliver 28nm just perfectly in time, afaik intel has still not gone to 22nm mass production, I'd say 2H 2012 before any high end 28nm gpus come to market, amd and nvidia will start off with lower ends first, to test the viability of the process.

WAIT. if HD7990 = HD7970X2 = 6098SP. how is it 6400SP? lets wait for some slides to leak.

tkin said:
If TSMC screwed with the 40nm fab, ditched the 32nm fab, what makes you sure they will deliver 28nm just perfectly in time

arre, AMD has designed it like this. how many of these cluster function well is something we'll see later. surely there will be manufacturing defects, harvesting & the usual fab keywords here.

R

whats the ETA on this? any guess?

Sam said:
WAIT. if HD7990 = HD7970X2 = 6098SP. how is it 6400SP? lets wait for some slides to leak.

arre, AMD has designed it like this. how many of these cluster function well is something we'll see later. surely there will be manufacturing defects, harvesting & the usual fab keywords here.

I'm not talking about AMD, I'm talking about TSMC, they screwed up the entire plans for AMD, so I am not so much hopeful for 28nm from them, unless glofo steps in.

rajan1311 said:
whats the ETA on this? any guess?

Dec 2011 for low end 28nm(atleast), the high end will come around 2nd quarter 2012 or later.

R

aww dude....you ruined it....I was really hoping it would come by Oct so I can finally grab one on my Bday..
You sure on the 2012 launch (going all out this time

) ?

rajan1311 said:
aww dude....you ruined it....I was really hoping it would come by Oct so I can finally grab one on my Bday..
You sure on the 2012 launch (going all out this time ) ?

Pretty much, low ends will come around december, remember AMD tested 40 nm with 4770 and nvidia did that with some low end GT240 or something, after test runs with 28nm completes and it matures, the proper mid/high ends will launch. You'll not want to buy the first 28nm gpus, the mature ones only.

I will upgrade this time..!

asingh said:
I will upgrade this time..!

Your 4890CF will go strong another year easily, one of the many perks of investing in high end gpus, the GTX295 or GTX285 SLIs still hold their own in games.

Cr@p Xbox and PS3 is holding graphics back.

tkin said:
If TSMC screwed with the 40nm fab, ditched the 32nm fab, what makes you sure they will deliver 28nm just perfectly in time, afaik intel has still not gone to 22nm mass production, I'd say 2H 2012 before any high end 28nm gpus come to market, amd and nvidia will start off with lower ends first, to test the viability of the process.

Google Translate

Jaskanwar Singh said:
Google Translate

Yeah, it says one year from now, that's what I said, the last paragraph says they have started installing the machines, next is the risk phase, which will be used to evaluate the process by producing low/mid range gpus, high range will come next year, 2H.