[Ars] AMD sued over allegedly misleading Bulldozer core count

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dark zero

Platinum Member
Jun 2, 2015
2,655
138
106
Don't be surprised if the lawsuit involves Intel and they demands AMD too due patents.

In few words, the perfect moment to abort Zen for good once at all.
 

nanaki333

Diamond Member
Sep 14, 2002
3,772
13
81
why are people so upset? they didn't exactly pay a premium for these "8 core* chips. i can see if the 8150 cost the same as what was it? the i7 2700k at the time? core schmore; you're paying for a performance level which was around the i3-i5 level with AMD's biggest chips.

AMD has been budget/value as of late and i to this day purchase AMD chips for friend/buddy computers for bang for buck (they don't care about power consumption).
 

podspi

Golden Member
Jan 11, 2011
1,982
102
106
Silly lawsuit, but at least the debate will be settled once and for all
 

JDG1980

Golden Member
Jul 18, 2013
1,663
570
136
Silly lawsuit. But it was a huge PR blunder to sell them as 8 cores to begin with.

It was a huge PR blunder to release Bulldozer in the first place, instead of just continuing to refine and die-shrink K10.
 

JDG1980

Golden Member
Jul 18, 2013
1,663
570
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Despite how bad the Bulldozer architecture was and is, I don't see this lawsuit getting anywhere. In fact, it borders on frivolous.

According to the original article, the plaintiff asserts that the Bulldozer FX CPU "cannot perform eight instructions simultaneously and independently as claimed". In fact, this is not true. A 4M/8C Bulldozer can perform eight integer operations simultaneously, or eight 128-bit FPU operations. It just can't perform eight 256-bit (AVX) operations. And the fetch and decode hardware is shared between core pairs. The fundamental issue is that there is (as far as I know) no legal definition of what constitutes a "core" on a CPU. Without such a definition, I don't see how AMD's claim could be considered legally false and misleading.

Moreover, AMD made no attempt to hide the architecture of its Bulldozer line. Here is a quote from the launch day review on Anandtech:
Architecturally Bulldozer is a significant departure from anything we've ever seen before. We'll go into greater detail later on in this piece, but the building block in AMD's latest architecture is the Bulldozer module. Each module features two integer cores and a shared floating point core. FP hardware is larger and used less frequently in desktop (and server workloads), so AMD decided to share it between every two cores rather than offer a 1:1 ratio between int/fp cores on Bulldozer. AMD advertises Bulldozer based FX parts based on the number of integer cores. Thus a two module Bulldozer CPU, has four integer cores (and 2 FP cores) and is thus sold as a quad-core CPU. A four module Bulldozer part with eight integer cores is called an eight-core CPU. There are obvious implications from a performance standpoint, but we'll get to those shortly.

Anyone who read the performance reviews available on launch day knew what they were getting. And if you don't read the reviews, then you have only yourself to blame if you don't see the level of performance you want.
 

TheELF

Diamond Member
Dec 22, 2012
3,993
744
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The fundamental issue is that there is (as far as I know) no legal definition of what constitutes a "core" on a CPU. Without such a definition, I don't see how AMD's claim could be considered legally false and misleading.
It's not about what constitutes a core but about people expecting to get 8 identical "things" when hearing 8core (or n of anything) , but they don't they only get 4 identical things.
It is semantics but it does influence consumers since there are a lot of people that think that more cores equal more performance no matter what the rest of the specs are like.
 

thesmokingman

Platinum Member
May 6, 2010
2,307
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It's not about what constitutes a core but about people expecting to get 8 identical "things" when hearing 8core (or n of anything) , but they don't they only get 4 identical things.
It is semantics but it does influence consumers since there are a lot of people that think that more cores equal more performance no matter what the rest of the specs are like.


When are they going to sue both Nvidia and AMD for dual gpu cards? Or is it just convenient cuz it's AMD? This isn't a valid suit. Too bad stupidity can't be legislated against.

 

Leyawiin

Diamond Member
Nov 11, 2008
3,204
52
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It was a huge PR blunder to release Bulldozer in the first place, instead of just continuing to refine and die-shrink K10.

Yeah, throwing the baby out with the bathwater (or reinventing the wheel if you prefer that metaphor) didn't turn out so well.
 

sm625

Diamond Member
May 6, 2011
8,172
137
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If anything is going to hold water, it would be the fact that AMD calls a 2 module 8 gpu compute unit APU a "12 core".
 

freeskier93

Senior member
Apr 17, 2015
487
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The biggest problem I see with this case is if it goes through the outcome will set legal precedence for the definition of a "core", since as far as I know there is no formal definition by a governing body or engineering society.
 

freeskier93

Senior member
Apr 17, 2015
487
19
81
If anything is going to hold water, it would be the fact that AMD calls a 2 module 8 gpu compute unit APU a "12 core".

AMD is very specific about the wording and don't just say "XX Core", I've only seen it as "XX Compute Cores (YY CPU + ZZ GPU)".
 

MrTeal

Diamond Member
Dec 7, 2003
3,587
1,748
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It's not about what constitutes a core but about people expecting to get 8 identical "things" when hearing 8core (or n of anything) , but they don't they only get 4 identical things.
It is semantics but it does influence consumers since there are a lot of people that think that more cores equal more performance no matter what the rest of the specs are like.

Why? It's still 8 identical integer cores and 8 128bit FMACs, that share some common front and back end parts. You could say the same thing about every GPU produced in the last decade that advertises X CUDA cores or shaders, since they're grouped into large blocks with common hardware necessary for them to run.
 

AtenRa

Lifer
Feb 2, 2009
14,003
3,361
136
It's not about what constitutes a core but about people expecting to get 8 identical "things" when hearing 8core (or n of anything) , but they don't they only get 4 identical things.
It is semantics but it does influence consumers since there are a lot of people that think that more cores equal more performance no matter what the rest of the specs are like.

Bulldozer Architecture lesson 101

Each Module can fetch, decode, execute and retire instructions from two threads simultaneously per cycle.

Same thing as two separated x86 CPU Cores.
 

aigomorla

CPU, Cases&Cooling Mod PC Gaming Mod Elite Member
Super Moderator
Sep 28, 2005
20,882
3,230
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I agree with everyone that this is just a silly law suit.

Well i guess this is why intel always says 4C/8T to avoid silly law suits like this.
 

AtenRa

Lifer
Feb 2, 2009
14,003
3,361
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No, they are only quads etc

Of course, each Intel core shares all its execution units between two threads.

On the Bulldozer, there are TWO separated Integer Execution Units.

So for the Intel they are Quad Cores, for AMD they are Quad Modules or 8-Cores since each Module has two separated Integer Execution Units.
 

Magic Carpet

Diamond Member
Oct 2, 2011
3,477
232
106
Of course, each Intel core shares all its execution units between two threads.

On the Bulldozer, there are TWO separated Integer Execution Units.

So for the Intel they are Quad Cores, for AMD they are Quad Modules or 8-Cores since each Module has two separated Integer Execution Units.
Thuban had six cores. No argument. And then AMD really confused everybody with their interpretation of a core, also known as a module with the later released BD chips. People got confused, people got misled, eventually somebody decided to sue them. No surprise.
 

AtenRa

Lifer
Feb 2, 2009
14,003
3,361
136
Thuban had six cores. No argument. And then AMD really confused everybody with their interpretation of a core, also known as a module with the later released BD chips. People got confused, people got misled, eventually somebody decided to sue them. No surprise.

Mislead

lead in a wrong direction or into a mistaken action or belief often by deliberate deceit

or

verb (used with object), misled, misleading. 1. to lead or guide wrongly; lead astray.

2. to lead into error of conduct, thought, or judgment.

verb (used without object), misled, misleading. 3. to be misleading; tend to deceive: vague directions that often mislead.




People are ignorant/not informed and or uneducated about the AMD Bulldozer Architecture but not mislead.
 

VirtualLarry

No Lifer
Aug 25, 2001
56,453
10,120
126
I agree, I think that this is a fairly frivolous lawsuit, since there is no legal definition of "a CPU core".

I mean, CPU cores, such as in the single-cored AMD 386DX-40, didn't even have ANY FPU cores. Does that mean that they were a zero-core CPU? NO!

Edit: Arguably, just duplicating EVERY function in a core, into another core, in a cookie-cutter fashion, is actually the WRONG thing to do. Remember the early Athlon X2 chips, and the problems they had, because they had two independent, free-running, time-stamp counters per core?
 
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Magic Carpet

Diamond Member
Oct 2, 2011
3,477
232
106
People are ignorant/not informed and or uneducated about the AMD Bulldozer Architecture but not mislead.
You see, Intel has been smart from day one. They never tried to market Hyperthreading as "doubling" cores. 1 core with Hyperthreading and so on and so forth, AMD marketed it as 8 cores. And what was next? You need Windows 8+ to unleash the full performance of our CPU. WTF? 8 cores not enough for Windows 7? Hah. People clearly were misled with these claims, especially those who upgraded their Thuban/Opterons to FX without doing their home work. Not so much of an upgrade it was. The first-gen Bulldozer was even slower in some workloads than their previous gen, partially due to the fact that it wasn't a real octa-core CPU. The rest is just semantics.

I mean, CPU cores, such as in the single-cored AMD 386DX-40, didn't even have ANY FPU cores.
If their 8 cores performed, nobody would give a damn about "how it was built". But if you can't walk the walk...
 
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AtenRa

Lifer
Feb 2, 2009
14,003
3,361
136
You see, Intel has been smart from day one. They never tried to market Hyperthreading as "doubling" cores. 1 core with Hyperthreading and so on and so forth, AMD marketed it as 8 cores. And what was next? You need Windows 8+ to unleash the full performance of our CPU. WTF? 8 cores not enough for Windows 7? Hah. People clearly were misled with these claims, especially those who upgraded their Thuban/Opterons to FX without doing their home work. Not so much of an upgrade it was. The first-gen Bulldozer was even slower in some workloads than their previous gen, partially due to the fact that it wasn't a real octa-core CPU. The rest is just semantics.


If their 8 cores performed, nobody would give a damn about "how it was built". But if you can't walk the walk...

Sorry but an 8-core Intel CPU is slower in some workloads (Single Thread) than last year Quad Core CPUs.

You should read and learn the difference between SMT and CMT and then you will understand why Bulldozer is called 8-core and the Intel Quads are not.
 

Enigmoid

Platinum Member
Sep 27, 2012
2,907
31
91
Sorry but an 8-core Intel CPU is slower in some workloads (Single Thread) than last year Quad Core CPUs.

You should read and learn the difference between SMT and CMT and then you will understand why Bulldozer is called 8-core and the Intel Quads are not.

The 8150 was slower than Thuban in a number of MT loads.
 

Magic Carpet

Diamond Member
Oct 2, 2011
3,477
232
106
Sorry but an 8-core Intel CPU is slower in some workloads (Single Thread) than last year Quad Core CPUs.
If you are speaking of 5960X than yes, it was slower in ST due to lower clockspeed, but it wasn't as embarrassing as this:



You should read and learn the difference between SMT and CMT and then you will understand why Bulldozer is called 8-core and the Intel Quads are not.
I know what I need to know. The FX didn't perform as well as it talked.

 
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