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Forums - Gaming - Xbox 720 Is Similar to PS4, Ubisoft Says

So...I guess everyone is just going to assume they mean that the 720 will be as powerful as the PS4? The rumored specs for the 720 are close enough to be called "similar" to the PS4.

Doesn't it sound more like he was talking about the "community" aspects of the new consoles? He said they would be similar and then started talking about them both being "immersible" and "social".



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gooch_destroyer said:
What if Microsoft just "leaked" some fake information just to throw us off. Then when they announce it they'll say no mandatory kinect. And then Pitbull comes out and dances.


Get out of here conspiracy theorist your crazy idea's will not be tolerated! lol joking by the way. 



tonymarraffa said:
Tabular said:
So... does 50% less GPU performance equal being aligned?


Where was I when the Specs were confirmed?


Interesting you should mention that.  Another poster actually posted something very interesting that about the leaked specs and if this data is correct puts a huge change to how that data was interpredit.  I am going to re-post what he posted changing a few things as his English is not so great.  I will say take this with a grain of salt but he do seem to back up his information 

Ok so here is the beak down

This is the VGLeaks diagram for Durango

http://www.vgleaks.com/dura... 

Now under the Compute paragraph here is what it states

"Each of the 12 Durango SCs has its own L1 cache,LSM(Local Shared Memory), and scheduler, and four simd units" . 

Ok we are talking about FOUR simds - I will not go into detail on what they do just know they perform operations or work to get you the nice graphics, physics, AI etc.

this is the PS4 leaked document which turned out to be true when Sony announce the PS4
http://www.vgleaks.com/worl... 

go to the update part and you will see this line 

"Each CU contains dedicated: 

- ALU (32 64-bit operations per cycle)" 

So what this is saying is that the PS4 GPU can execute 32 64bit threads per CPU cycle.

Now  go back to the Durango leaks and you will read: 

" A SIMD executes a vector instruction on 64 threads at once in lockstep " 

So within the Durango leak its stating that its CU unit will execute 64 threads at once.  Within the  ps4 we have 32 threads.

Within each SC (this is the name MS gives to their compute cores some call it shader cores some called it shared cores) there are 4 simd in every SC 

12 Shader cores each on 64 threads = 768 operations per CPU cycle on durango against 
14 CU each 32 threads = 448 If you add the other 4CU it's = 557 

If we are looking at comparative hardware out now and coming up there are some very interesting parallels between Durango and AMD 7970 GPU.
again on the 7970 we have 32 CU divided in groups and amd smartly call them 8 CU ARRAY...same thing happen in GTX 680 they call 8SMX a group of 32 CU. 

For comparison here is a link to the 7970 diagram

http://i.imgur.com/g61Dtdy.... 
(amd 7970) 

compared to the Nextbox (rumored) gpu 

http://i.imgur.com/sqkJUmO.... 

So here is the punch line.  Within the VGleak.com document, they call the SC one CU and this is where they are getting the difference in TFlops between the PS4 and Durango.  From the document though, it appears that the SC within Durango is actually an array of 4 CU units within one SC.   The reason I say this because one CU has 4 SIMD that do 32 threads per clock, while the Durango has 4 SIMD that do 64 threads per clock

If this is correct than instead of 12 CU cores averaging out to 1.2 TFlops, the Durango actually is 48CU which averages around 3.8TFlops

 



i was expecting it to be similar in a lot of ways..

...i just want to know if they are doing something sony isn't that i'll miss. xbl was no doubt a better overall services this gen. did sony close that gap or did ms find the next best thing.

the more similar they are the more confidently i can get a ps4 instead of an xbox without fear of not getting the games i want to play even if ps4 doesn't light the world of fire (wrt sales). ..and i want to play sony's first party games.



Thats what I expected from the durango.



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lol some guys are in denial here...

Durango GPU have 12 CUs compared to 18 CUs in PS4 GPU... Microsoft says the Durango will match the PS4 power in use efficiency... the 12 CUs will be always close to 100% use and PS4 maybe not... the Data Moves, eSRAM, and other fixed units will help in that fact.

But in raw power the PS4 will be ahead always.

And Specs didn't change in less than a year before the release... sorry.



ethomaz said:
lol some guys are in denial here...

Durango GPU have 12 CUs compared to 18 CUs in PS4 GPU... Microsoft says the Durango will match the PS4 power in use efficiency... the 12 CUs will be always close to 100% use and PS4 maybe not... the Data Moves, eSRAM, and other fixed units will help in that fact.

But in raw power the PS4 will be ahead always.

And Specs didn't change in less than a year before the release... sorry.


Read my post above.  It could be that those rumored specs were not read correctly.



As long as I get my Gears and Halo with some other decent exclusives I don't really care. It's not going to be night and day between PS4 and 720.



It's just that simple.

Machiavellian said:
tonymarraffa said:
Tabular said:
So... does 50% less GPU performance equal being aligned?


Where was I when the Specs were confirmed?


Interesting you should mention that.  Another poster actually posted something very interesting that about the leaked specs and if this data is correct puts a huge change to how that data was interpredit.  I am going to re-post what he posted changing a few things as his English is not so great.  I will say take this with a grain of salt but he do seem to back up his information 

 

Ok so here is the beak down

This is the VGLeaks diagram for Durango

http://www.vgleaks.com/dura... 

Now under the Compute paragraph here is what it states

"Each of the 12 Durango SCs has its own L1 cache,LSM(Local Shared Memory), and scheduler, and four simd units" . 

Ok we are talking about FOUR simds - I will not go into detail on what they do just know they perform operations or work to get you the nice graphics, physics, AI etc.

this is the PS4 leaked document which turned out to be true when Sony announce the PS4
http://www.vgleaks.com/worl... 

go to the update part and you will see this line 

"Each CU contains dedicated: 

- ALU (32 64-bit operations per cycle)" 

So what this is saying is that the PS4 GPU can execute 32 64bit threads per CPU cycle.

Now  go back to the Durango leaks and you will read: 

" A SIMD executes a vector instruction on 64 threads at once in lockstep " 

So within the Durango leak its stating that its CU unit will execute 64 threads at once.  Within the  ps4 we have 32 threads.

Within each SC (this is the name MS gives to their compute cores some call it shader cores some called it shared cores) there are 4 simd in every SC 

12 Shader cores each on 64 threads = 768 operations per CPU cycle on durango against 
14 CU each 32 threads = 448 If you add the other 4CU it's = 557 

If we are looking at comparative hardware out now and coming up there are some very interesting parallels between Durango and AMD 7970 GPU.
again on the 7970 we have 32 CU divided in groups and amd smartly call them 8 CU ARRAY...same thing happen in GTX 680 they call 8SMX a group of 32 CU. 

For comparison here is a link to the 7970 diagram

http://i.imgur.com/g61Dtdy.... 
(amd 7970) 

compared to the Nextbox (rumored) gpu 

http://i.imgur.com/sqkJUmO.... 

So here is the punch line.  Within the VGleak.com document, they call the SC one CU and this is where they are getting the difference in TFlops between the PS4 and Durango.  From the document though, it appears that the SC within Durango is actually an array of 4 CU units within one SC.   The reason I say this because one CU has 4 SIMD that do 32 threads per clock, while the Durango has 4 SIMD that do 64 threads per clock

If this is correct than instead of 12 CU cores averaging out to 1.2 TFlops, the Durango actually is 48CU which averages around 3.8TFlops

 

 


I really don't understand this stuff...so if what you say is true, how much better would the Durango be than the PS4?





Machiavellian said:

Read my post above.  It could be that those rumored specs were not read correctly.

Your post makes no sense because every AMD GCN GPU have 4 vector SIMD per CU (PS4 included).

The VGLeaks are saying the same thing for PS4 and Nextbox GPU... both are GCN based.

The diagram shows 4 SIMD per CU in GCN... 16SPs per SIMD... 64SPs per CU... 1152SPs for PS4 and 768SPs for Nextbox.