Radeon HD 7000 Revealed: AMD to Mix GCN with VLIW4 & VLIW5 Architectures

[-Boris-]

Depends on what your definition of excellent yields are... AMD's 28nm yields are better than early 40nm ramp yields which weren't as bad as everybody thinks.
28nm is going very well atm. As long as TSMC keeps increasing capacity like they promised this will be much more smooth than 40nm.


78x0, aka Pitcairn, should be 24CUs on a 256bit bus. Probably around ~3bil trannies and ~240-250mm2.
77x0, aka Cape Verde, should be ~12CUs on a 128bit bus. Probably around ~1.5b trannies and looks like ~130mm2.

Can you really talk about CUs on VLIW4? Pitcairn will most likely be around 2.6B trannie just like Cayman. And i Doubt Pitcairn will be half a Cape Verde.

[The|Hunter]

Can you really talk about CUs on VLIW4? Pitcairn will most likely be around 2.6B trannie just like Cayman. And i Doubt Pitcairn will be half a Cape Verde.

Sorry if i misunderstood your answer but 7700 and 7800 ain't gonna be VLIW anymore, they're apparently GCN too.. So those Compute units are real".

Remember that we previously reported the latest low-end discrete GPU offerings from AMD will be re-brands? Well, it looks like the low-end desktop offerings will get the same treatment. In a series of documents detailing the next low-end discrete GPU offerings from AMD, all of them indicate that AMD will not make a low-end part based on the Graphics Core Next (GCN) architecture, but instead they are all re-brands of the legacy VLIW5 products, and are targeted, at the time of publication, to OEMs only.

ok yea i know its semiaccurate, but still info is info

http://semiaccurate.com/2011/12/16/l...ries-rebrands/


Some more leaks

[-Boris-]

Sorry if i misunderstood your answer but 7700 and 7800 ain't gonna be VLIW anymore, they're apparently GCN too.. So those Compute units are real".

Really? If that is the case then it gets Interresting. But I don't know if it's good or bad. It depends on if GCN has higher performance per unit and Hz compared to VLIW4 in games as well. If it's just in GPGPU applications it's faster then I think VLIW4 is better for 7870 since it seems like a less complex and cooler architecture. But on the other hand now we really can compare VLIW4 and GCN clock for clock in games.

[The|Hunter]

and this..

[Zoran]

I think the image is not scaled properly... if it's going to be shorter than the 6970 then not by that "much".