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[RP] AMD Bulldozer Benchmarks Leaked - Page 19  

post #181 of 214


look at the 2012 they are going to use 2-4 Bulldozer cores for future llano which obviously means core per core bulldozer is faster then Phenom II. Thing is we have no idea what the performance increase should be.

But,
Seeing Bulldozer is a whole new architecture unlike the Phenom I & II we should see a better performance leap then say going from an original Athlon to to Phenom I or PHI to PHII. A good example on the intel side is Pentium 4 to Core 2 Duo or C2D to i7, all new architectures with amazing performance jumps.
    
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post #182 of 214
Quote:
Originally Posted by xlink View Post
I'll believe it. 4 module, 8 core BD beats 4 core SB...
that said, what about 8 core SB?
An 8-core sandy bridge will be twice the die size of an 8-core bulldozer. This size will come complete with more power consumption and more heat and more cost per core (specifically due to lower yields due to size of the processor). All that said, it would probably win.

The four extra "cores" are just CMT instead of SMT (that is to say that they are just a more efficient answer to SMT aka "Hyperthreading"). This is why a "8-core" bulldozer is the same size as a 4-core sandy bridge (with SMT), but will deliver 80% more power for ~5% die increase (CMT) vs 10-30% for a similar ~5% die increase using SMT.

Here's a PDF on the topic from Cornell University 2005 (fairly technical white paper)

Quote:
7 Conclusions and Future Work

With higher levels of integration supporting more on-chip threads, the way in which the resources in multi-threaded processors are partitioned needs to be examined. In this paper, we compare the performance and energy efficiency of several partitioning options in a 4 to 8-thread multi-threaded architecture, ranging from chip multiprocessing (CMP) to simultaneous multi-threading (SMT), for a fixed amount of total resources.

Our analysis shows that the best performance is obtained by partitioning (and restricting the sharing of) the L1 data cache banks and execution units among threads, but allowing significant sharing of the front-end resources. The corresponding clustered multi-threaded (CMT) architecture is highly competitive with unrealizable SMT processors, achieving 90-96% of the cycle-level performance of a partitioned SMT (which improves on the base SMT), while dissipating about 50% of its energy.

Adopting a dual-processor CMP approach closes the performance gap between the SMT and CMT processors, as the major advantage of the former, flexibility in the assignment of threads to FUs, diminishes. Further dividing the resources for SMT processors among four processors creates more realizable organizations, but their performance falls far short of the CMT alternatives.

We find that a monolithic CMT and a dual processor CMP of CMT processors are very attractive options for future designs. We have recently incorporated support in our infrastructure for parallel applications and are exploring support for database and server-oriented benchmarks. They are the subject of our ongoing work. (reformatted for easier reading)

Edited by hajile - 3/6/11 at 5:23pm
post #183 of 214
Quote:
Originally Posted by A Russian :D View Post


look at the 2012 they are going to use 2-4 Bulldozer cores for future llano which obviously means core per core bulldozer is faster then Phenom II. Thing is we have no idea what the performance increase should be.

But,
Seeing Bulldozer is a whole new architecture unlike the Phenom I & II we should see a better performance leap then say going from an original Athlon to to Phenom I or PHI to PHII. A good example on the intel side is Pentium 4 to Core 2 Duo or C2D to i7, all new architectures with amazing performance jumps.
Core 2 to Core i (first series) wasn't a big performance jump like people make it out to be. It's only 13% faster clock-for-clock than C2Q Q9xxx series. Now, Pentium 4/D to Core 2: that's a whole different story. Core 2 is still the biggest leap in performance in microprocessors we've had in 5 years.
Edited by LOL_Wut_Axel - 3/7/11 at 3:55pm
    
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post #184 of 214
Axel, i7 gave more like 18-25% increase over C2D when it comes to things like rendering and encoding. Plus the ease with which a 280 dollar CPU could reliably reach 4.0ghz, and it was quite a step.

Also, C2D wasn't a replacement for P4. It was a replacement for Pentium D.
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post #185 of 214
Quote:
Originally Posted by pursuinginsanity View Post
Axel, i7 gave more like 18-25% increase over C2D when it comes to things like rendering and encoding. Plus the ease with which a 280 dollar CPU could reliably reach 4.0ghz, and it was quite a step.

Also, C2D wasn't a replacement for P4. It was a replacement for Pentium D.
Yeah but it gave a much lower increase in other areas, hence 13% overall. As for it not replacing the Pentium 4, the Pentium D is the exact same architecture. It's just two Pentium 4s pasted together with an interconnect between them.

I got the names mixed up and got it all wrong. What I meant to say was the difference from Pentium (Netburst, that is) to Core 2 to Core i.
    
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post #186 of 214
Quote:
Originally Posted by AMDMAXX View Post
I would agree with that... Thats what intel did when they were at the bottom of the totem (slash prices)... now its AMD at the bottom of the totem and their redoing the architecture from the ground up just as Intel did when they took the performance crown... so it goes back and forth... this is the beginning of AMD's return the the performance crown... Intel will slash prices and come up with a new plan and be ahead again... and vice versa... over and over...
I don't think so. I'm no Intel fan(haven't had an intel chip since my old pentium 100/200) but I'm guessing Intel is holding back on each release since Conroe. No reason for them not too.

I don't believe AMD will be anymore then the best bang for buck(Not even really true with SB around now) and a reason to keep Intel pricing in check. They're damn lucky they bought out Ati.

If Bulldozer was as good as people think it could be, we would be seeing a lot more of that from AMD. This release smacks of Fermi. Decent but not what was promised.
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post #187 of 214
Quote:
Originally Posted by Horsemama1956 View Post
I don't think so. I'm no Intel fan(haven't had an intel chip since my old pentium 100/200) but I'm guessing Intel is holding back on each release since Conroe. No reason for them not too.

I don't believe AMD will be anymore then the best bang for buck(Not even really true with SB around now) and a reason to keep Intel pricing in check. They're damn lucky they bought out Ati.

If Bulldozer was as good as people think it could be, we would be seeing a lot more of that from AMD. This release smacks of Fermi. Decent but not what was promised.
that is my point from an earlier post.

AMD can not compete with intel, on price or performance much anymore.

it was once said, if intel stopped making and selling cpu's today, they could survive for the next 10 years, as they have other markets they got their hands in, and each x86 cpu that is sold, there is a "royalty" fee paid back to them.

Intel is a technological juggernaut, it has 8 times the employees amd does, and 10 times the sales revenue that amd does.

compared to it, intel has infinite resources it could dedicate taking the market back, look what they did with the core 2 architecture, which was based on the P6 architecture (pentium, pentium II and III were based on this) which was abandoned for the ill fated netburst. so intel was able to recycle a old architecture, improve upon it, and released one hell of a chip.

now for nehalem and sandy, i'm not sure if they are "new" architecture like bulldozer will be, but they are definately an improvement over core 2.

given now i think intel is just toying with us, why improve another smashing core 2 hit, when your only real competition can barely even compete with core 2, let alone nehalem and sandy now. might be a different story with bulldozer tho, and i hope it is, cause when amd shows real improvement and becomes a threat, us consumers win, right now, its bullies kicking puppies, it just sad.
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post #188 of 214
well im very happy at the performance that my amd gives me seeing that my cpu was 229.00 verses 999.00
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post #189 of 214
Rumorpedia.net?

i'll take this with a grain of salt.
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post #190 of 214
isnt it 4 modules with 2 cores each?
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