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[HH] AMD Fusion APU and Graphics Update: Trinity - Page 4

post #31 of 75
Quote:
Originally Posted by jrbroad77 View Post

Am I missing something or is Trinity the catch-all for AMD's mobile APUs, instead of seperating it with 2 different lines (like currently, 35-45W Llano and 17W Brazos).

Next Gen Brazos which was Witchita/Krishna got axed when the process was moved to TSMC over GloFlo.
post #32 of 75
Quote:
Originally Posted by jrbroad77 View Post

AMD's current 17W APU's are the E-300, E-350, and E-450. All of those have 80 SP's on die. 50% gain over that is not too much. 25% gain over E-450 is still slower than Core 2. On the other hand, Ivy Bridge ULV lineup has been released, the i5's will have a dual-core turbo around 2.5ghz.. with ~5% IPC gain over SB. HD 4000 is about 50% faster than HD 3000, which is much faster than E-350's 6310. Am I missing something or is Trinity the catch-all for AMD's mobile APUs, instead of seperating it with 2 different lines (like currently, 35-45W Llano and 17W Brazos).

Only these Trinity APU's are not replacing the E series... Just because power efficiency is down to that level, doesn't mean they are talking about that. It's a 25%/50% improvement over the llano's they will be replacing, which is very exciting.

I wonder if they have pushed the envelope further on the power of the card it can crossfire with. I'm excited for Desktop Piledriver... maybe AMD just had a bunch of bad luck with BD after all, and hopefully the design is actually good... Here's hoping tongue.gif
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post #33 of 75
I've been eagerly awaiting Trinity for quite some time. By the looks of things so far, it seems like it's going to definitely be worth the wait. Go AMD! thumb.gif
post #34 of 75
Quote:
Originally Posted by Fuell View Post

Only these Trinity APU's are not replacing the E series... Just because power efficiency is down to that level, doesn't mean they are talking about that. It's a 25%/50% improvement over the llano's they will be replacing, which is very exciting.
I wonder if they have pushed the envelope further on the power of the card it can crossfire with. I'm excited for Desktop Piledriver... maybe AMD just had a bunch of bad luck with BD after all, and hopefully the design is actually good... Here's hoping tongue.gif

So you think AMD dropped the TDP from 35W to 17W and somehow they can squeeze 25% more performance on CPU (that would mean at least 1.9ghz base clock, on a 17W quad)., and 50% over 6620G, which has 400 SPs. Suppose DDR3 1866 can give 20% more performance over 1333. That still means they need 480 SPs. All that in 17W? On what process size? Llano APU is already 32nm, and 28nm is only a 30% shrink.

Note AMD's current 17W APU: 1.6ghz dual-core, 80 SPs. Please teach us how AMD will increase the SP count 6-fold with a 30% more efficient process.

My math: 30% shrink = at best 50% performance gain at the same TDP. Your math: ??????
Edited by jrbroad77 - 1/10/12 at 11:18pm
 
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post #35 of 75
Quote:
50% gain over that is not too much. 25% gain over E-450 is still slower than Core 2.

You don't understand.  That comparison is over Llano A-Series.  i.e. the 35W APUs of the previous gen.  NOT the 9-18W E-Series and other Brazos APUs.

post #36 of 75
Quote:
Originally Posted by jrbroad77 View Post

So you think AMD dropped the TDP from 35W to 17W and somehow they can squeeze 25% more performance on CPU (that would mean at least 1.9ghz base clock, on a 17W quad)., and 50% over 6620G, which has 400 SPs. Suppose DDR3 1866 can give 20% more performance over 1333. That still means they need 480 SPs. All that in 17W? On what process size? Llano APU is already 32nm, and 28nm is only a 30% shrink.
Note AMD's current 17W APU: 1.6ghz dual-core, 80 SPs. Please teach us how AMD will increase the SP count 6-fold with a 30% more efficient process.
My math: 30% shrink = at best 50% performance gain at the same TDP. Your math: ??????

Intel dropped TDP by dropping clocks. Why can't AMD?

This isn't bobcat based (28nm bobcats are DOA). This also isn't 28nm (all bulldozer and phenom are full-node chips, so the next shrink is 22nm in a year or two).

If piledriver can fix the problems with bulldozer, then this is very possible. Fixing branch prediction (just to be on par with Phenom II) should net 5-15% performance improvement. Fixing decoder width (probably 5-6 units instead of 4) would net another gain of 5-20% (depends on how instruction starved the system is). Better fabs could net 5-30% increase due to reducing cache latency and could net even more through higher turbo clocks. I'm not that optimistic, but I am interested.

A more efficient die layout that borrows some cues from GCN combined with more 32nm full-node optimizations could net huge power savings for the GPU. Switching to VLIW4 gives 10+% improvement per shader. If fabs allow a higher clockspeed, then keeping the 400 shaders could be possible.
Edited by hajile - 1/10/12 at 11:48pm
post #37 of 75
If they learn how to scale these, I'll take 2 of these in my notebook.

crossfire to a new level.
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post #38 of 75
If that 50% more GPU performance is true, then it's settled - I'm definitely jumping ship to APUs in the future. thumb.gif

...though it does feel embarrassing for my current rig to get beaten by an integrated GPU tongue.gif
 
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post #39 of 75
VERY impressive, this puts my laptop with it's 45w 1.73GHz i7-740qm and 5730m to complete shame. Three monitors, gaming, encoding, video playback, and at 17w? Really hope this brings the serious competition that it seems to indicate to the table. Intel may be the choice for higher end desktops but these APU's are just rockin, been extremely impressed with the price and performance of the entire range of them. Played around with the c-50, e-350, e-450, and one of the mobile A6's which all seemed great and were a bargain price.
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post #40 of 75
its definitely impressive. lets just hope they can actually make enough chips this time. half a year later and A8 llano notebooks are still in short supply.
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