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AMD's Bobcat and Bulldozer
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When is the actual release date supposed to be?
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We need a release date and specs.
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nothing more than was said by dresdenboy yet :(
edit: only the AM3+ socket was confirmed.
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Quote:
Originally Posted by
madcho
nothing more than was said by dresdenboy yet :(
edit: only the AM3+ socket was confirmed.
how about this?:D
http://www.anandtech.com/show/3863/a...t-chips-2010/5
http://images.anandtech.com/reviews/...dozeruarch.jpg
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nice:up:
exciting time ahead
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Lostcircuits seems to believe that Bulldozer will be a bobcat with an extra core. They mention store, load and two instruction pipes. Guess it's reasonable, but not too interesting. :(
They're talking about HT in Bobcat too. Seems like something I'll investigate closer. But I think they misunderstood something.
EDIT:
Anandtechs preview is much more in line with my expectations. Seems like Dresdenboy was right when he first talked about two AGUs and two ALUs.
But seems like the performance per core will be significantly lower than sandy bridge, but at the same time seems like they made really small modules. I think the most fair comparison will be one BD module vs. one SB core.
Still wonder about L2 cache. AMD has way more inefficient L2 than Intel at this point.
PCperspective seems to think it's 4 ALUs after all. I Trust Anandtech more. ;)
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2 alu + 2 agu / core.
WTFFFFFF
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Quote:
Originally Posted by
96redformula
When is the actual release date supposed to be?
Quote:
Originally Posted by Anandtech
“Due out in the first half of 2009, AMD's Bulldozer core is the true revolutionary successor to the K8 architecture. While Barcelona and Shanghai are both evolutionary improvements to the current core, Bulldozer is the first ground-up redesign since the K7.”
The current plan is next summer but we know how did it work out last time...
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I had a bad feeling about the last few AMD cpu launches and I was right, I have a good feeling about bulldozer though, It looks more and more like it will rock. Also, Being late to the party will not mater if it does rock, Better to wait and get it right imo.
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@anandtech:
MMX :rofl:
This should be at least XOP .. .makes no sense otherwise, MMX is dead as dodo.
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Quote:
AMD also told us that it will introduce a new AM3+ socket for consumer versions of Bulldozer CPUs. AM2 and AM3 processors will work in the AM3+ socket, but Bulldozer chips will not work in non-AM3+ motherboards.
http://www.extremetech.com/article2/...2368186,00.asp
:( :( :( :( :( :( :( :( :( :( :( waaa waa
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Quote:
Originally Posted by
ajaidev
Forget that comment, they just proofed that they dont have any clue.
AM2 CPUs cannot work in AM3, however they should now be able to work in AM3+ ???
Sorry but:
:rofl: :ROTF: :shakes:
They definitely understood something very, very wrong.
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Quote:
Originally Posted by
ajaidev
Agree that's not good for a AM3 actual board.
But C32 and G34 will be working.
i don't understand fully this part in anandtech review :
Quote:
The 3rd ALU does have some performance benefits, and AMD canned it to reduce die size, but AMD mentioned that the 4-wide front end, fusion and other enhancements more than make up for this reduction. In other words, while there’s fewer single thread integer execution resources in Bulldozer than Phenom II, single threaded integer performance should still be higher.
Why a 2 Alu core could be faster than a 3 ?
WTF if there is not 4 alu and 3 agu per core, where is integer performance ?
I'm afraid about this too :
Quote:
Branch Prediction and a Deeper Pipeline
Bulldozer will use a deeper pipeline with less logic per stage compared to current Phenom II/Opteron processors. AMD argues that this will ensure clock speed won’t be a problem with the design and we should expect to see Bulldozer based products at similar if not higher clock speeds than what we have today with Phenom II.
Same clockspeed + deeper pipeline.
:cord: :cord: :cord:
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wtf...they didnt even give there presentation yet? how are these even released? i call BS! the conference is pacific time....soo its not happening for awhile!
http://www.hotchips.org/program/conference-day-two/
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Quote:
Originally Posted by
Opteron146
Forget that comment, they just proofed that they dont have any clue.
AM2 CPUs cannot work in AM3, however they should now be able to work in AM3+ ???
Sorry but:
:rofl: :ROTF: :shakes:
They definitely understood something very, very wrong.
lol did not notice that was more concerned over the Bulldozer not working with non- AM3+ parts.
Quote:
Originally Posted by
madcho
Agree that's not good for a AM3 actual board.
But C32 and G34 will be working.
i don't understand fully this part in anandtech review :
Why a 2 Alu core could be faster than a 3 ?
WTF if there is not 4 alu and 3 agu per core, where is integer performance ?
I'm afraid about this too :
Same clockspeed + deeper pipeline.
:cord: :cord: :cord:
AMD says that 3rd ALU was not much used in PhII and it was left so as not to redesign that part. But yes there will be a performance dip due to this in single threaded ALU dependent app's. Lets hope the other enhancements actually work to cover up this missing ALU.
Branch Prediction is said to be aggressive and it has to be with as deep a pipeline bulldozer has otherwise we can have a call problem. On the bright side deeper pipes may enable better overclocking well that depends a lot on the architecture.
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Quote:
Originally Posted by
god_43
There was a telephone conference for the press earlier.
However, at situations like this, the presentators keep some more (detailed) information for the real presentation.
The press information is more like a briefing.
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Quote:
Originally Posted by
Opteron146
There was a telephone conference for the press earlier.
However, at situations like this, the presentators keep some more (detailed) information for the real presentation.
The press information is more like a briefing.
ah i get it, thanks.
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at least i only got a cheapo rig planning on buying a high end am3 mobo when bulldozer comes out ... i guess i made the right choice
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Quote:
Originally Posted by
ajaidev
lol did not notice that was more concerned over the Bulldozer not working with non- AM3+ parts.
Yes I can understand your surprise, I was first shocked, too.
However it does not make sense at all.
Since the introduction of Socket AM3 with 941 pins and CPUs in an AM3 package with 938 pins only (because of socket AM2 backward compatibility), I was waiting for a CPU with a "real" AM3 package with the full 941pins, which wont be AM2 compatible.
I think that is it what AM3+ really is about ... plus some faster memory modes.
Just horrible to see how bad some internet sites are ... now the uninformed people who believe that piece of <censored> misinformation will pop up in lots of forums, and it will be linked everywhere, what a pain in the <...>
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Quote:
Originally Posted by
G.Foyle
There's a Bobcat die floor plan on the slides, anyone care about estimating the die size? There's 512 kB of L2 cache consuming 31% of the total chip area. If Bobcat was made on 45nm process and the cache was the same as L2 in Deneb/Thuban cores, it would make Bobcat core be around 13 mm˛ (core with L2 cache only - gpu engine and memory controller not included).
Were is that floor plan?
Quote:
Originally Posted by
Opteron146
Forget that comment, they just proofed that they dont have any clue.
AM2 CPUs cannot work in AM3, however they should now be able to work in AM3+ ???
Sorry but:
:rofl: :ROTF: :shakes:
They definitely understood something very, very wrong.
The AM2 part is probably a typo, or they are counting Phenom II as "AM2 and AM3".
Quote:
Originally Posted by
madcho
Agree that's not good for a AM3 actual board.
Why a 2 Alu core could be faster than a 3 ?
What I wonder is how that could save that much die space that they feel it's a good move.
Quote:
Originally Posted by
madcho
Same clockspeed + deeper pipeline.
:cord: :cord: :cord:
Clockspeed is something Anandtech was guessing. We know nothing about that. And we don't know how much deeper the pipeline is.
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Quote:
Originally Posted by
-Boris-
The AM2 part is probably a typo, or they are counting Phenom II as "AM2 and AM3".
Or they dont have a clue ^^
I explained it above what AM3+ probably is about .. only a new package, not a new socket (besides higher RAM clocks).
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Quote:
Originally Posted by
Opteron146
Or they dont have a clue ^^
I explained it above what AM3+ probably is about .. only a new package, not a new socket (besides higher RAM clocks).
You don't need to tell me what AM3+ is about.
I think it's very unlikely that their knowledge about AM2/+ and AM3 is so limited that they honestly believe that an AM2 processor will work in AM3+.
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Lost Circuits :
Quote:
All Bobcat and Bulldozer enabled motherboards based on the AM3+ socket will be backwards compatible with earlier AMD AM3 CPUs but AM3 CPUs will not be a drop-in replacement for existing processors in existing motherboards.
ExtremeTech :
Quote:
AMD also told us that it will introduce a new AM3+ socket for consumer versions of Bulldozer CPUs. AM2 and AM3 processors will work in the AM3+ socket, but Bulldozer chips will not work in non-AM3+ motherboards.
I don't understand what Lost Circuits's words means :shrug: