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  AMD FX - Steamroller 
 
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SuPeR Xp Sep 11, 2012, 11:58pm EDT Reply - Quote - Report Abuse
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Now you his looks very impressive. Rumoured to get released in early 2013 to completely replace both Bulldozer & Piledriver. An internal source states Steamroller will be approximately 45% faster than Today's Bulldozer.

The history of AMD's Bulldozer architecture is a painful one. The old management lead by Hector Jesus Ruiz and Dirk Meyer deliberately delayed the arrival of K10 "Barcelona" and got usurped by Intel's Core architecture. The mad rush to the original Bulldozer caused a lot of sacrifices in design and ultimately, lead AMD engineering team to cancel the architecture in 2008. Instead of creating a master-core, AMD's engineers envisioned a multi-step approach to increase the performance of its architecture.


Major Improvements. Steamroller should have been the original Bulldozer. Didn't want to underline the whole thing, so the link is below.
Comparing Steamroller to Bulldozer makes much more sense, since the two architectures are starting to differ in greater detail. First and foremost, AMD finally addressed the core starvation. Originally, Bulldozer had a single Fetch and single Decode unit, which were in charge of feeding both Integer and Float schedulers. It turns out that the size of those units were too small and quite often you'd waste precious cycles with either ALU or FPU pipelines not doing a thing. Steamroller goes back to square one and keeps the Fetch unit as a single entity, but the Decode part is now doubled. Each Decode unit feeds one INT unit (4 pipelines) and the FP Scheduler, which has three dedicated units (two 128-bit FMAC units which can act as a single 256-bit unit when you need 256-bit AVX. For legacy code, the MMX Unit is now a single separate entity (instead of multiple side half-units in Bulldozer design). Also, one of major improvements is the increase in the instruction cache size. Up until Bulldozer, AMD featured the largest L1 cache in the field - both L1 Instruction (I-Cache) and Data (D-Cache) were the same size (64KB). With 128KB of L1 cache, AMD easily compensated for the size deficit in L2 and L3 cache versus Intel Nehalem and Sandy Bridge architectures. Bulldozer sliced down L1 cache to "better than Pentium 4, but still crap", as one of our sources put it bluntly (16KB L1 D-Cache and 64KB L1 I-Cache). Steamroller increases the size of Instruction cache beyond K7/K8/K10/K10.5/BD, but L1 D-Cache won't remain the same either.

According to Mark Papermaster, the improvements should yield up to 30% performance increase, but our sources inside the company beg to differ.

"Steamroller is not Bulldozer Enhanced. F*** no. The layout might look the same but our LEGO blocks are completely different. When all is said and done we should get 45% improvement and this goes to show how the Bulldozer was f***** design. This is all what Bulldozer was supposed to be."

Read more: [url]http://vr-zone.com/articles/amd-pushes-steamroller-and-excavat...z26DXDxHDW[/url]


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SuPeR Xp Sep 12, 2012, 12:03am EDT Reply - Quote - Report Abuse
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>> Re: AMD FX - Steamroller
And here is a killer Quote. It's great he works for AMD... AMD's Processor Design team is lead by this genius.
[QUOTE]Jim Keller (our sources from AMD/Intel/NVIDIA claim he's arguably the best CPU architect of all times)

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Meats_Of_Evil Sep 12, 2012, 07:29pm EDT Reply - Quote - Report Abuse
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>> Re: AMD FX - Steamroller
Thanks for the info Super, I'm kind of dubious about this, since I do not understand much of it but every AMD chip looks stellar on paper, but we know performance is another thing. I really do hope that they get back to the top with this new architecture. Now, I have been really impressed with how well their APU's have been doing. My next laptop will definitely have an AMD APU, with the best integrated GPU available. As of right now I believe its the 7660G and it kicks the Intel HD 4000 ass.

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SuPeR Xp Sep 12, 2012, 08:46pm EDT Reply - Quote - Report Abuse
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>> Re: AMD FX - Steamroller
An AMD insider stated Steamroller will be 45% faster than Bulldozer. This should be enough to bring on a strong fight for AMD. It's not just the desktop that would benefit, but the server market too.

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SuPeR Xp Sep 15, 2012, 08:03am EDT Reply - Quote - Report Abuse
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>> Re: AMD FX - Steamroller
There's always about 1000 or more anonymous people on this Site. People join please, no sense in being anonymous.

Anyhow, Here you go, and if true, this would be very impressive indeed.
Piledriver 15% to 20% Boost in IPC

This boost is based a combination of higher clock speed and internal core modifications.
The major different between Piledriver cores over Bulldozer is every single hike in clock rate will gain you more effective performance versus the Bulldozer. For instance, 200MHz Piledriver would approximately the same speed effect to an 800MHz hike via Bulldozer. This has to do with tweaking the dispatch, tightening the L2 timings, FPU modifications along with be slightly better branch prediction in terms of faster recovery of missed predictions.

posted by : ATInsider, 14 September 2012

The Inquirer ([url]http://s.tt/1n773[/url])

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SuPeR Xp Sep 21, 2012, 08:49pm EDT Reply - Quote - Report Abuse
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>> Re: AMD FX - Steamroller
Here's my thoughts regarding the Bulldozer Design.
There was a reason why AMD is talking about Steamroller right now despite the fact Piledriver is next in line. They've figured out how to take this Bulldozer Design innovation and crank up the performance by far. Rumours of an insider already stated Steamroller is going to be 45% faster clock for clock than Bulldozer. I bet Excavator will add another 45% performance boost over Bulldozer clock for clock. Excavator will be according to AMD a complete Bulldozer re-design.

Let me say, despite the fact Bulldozer did not perform as well as we would have liked, darn, people need to realize AMD's module approach is very risky but "Extremely" rewarding.

Think about it?
Today = 1 x Module = 2 x Cores.
Tomorrow = 1 x Module = 4 x Cores.
Near Future = 1 x Module = 6 x Cores.

There's mathematics involved, and this will enable AMD to scale performance and increase cores at will with every manufacturing process. How about 1 Module has 8 Cores? It's coming

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Bungle Sep 26, 2012, 12:15pm EDT Reply - Quote - Report Abuse
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>> Re: AMD FX - Steamroller
I just don't see extra cores really adding anything at the consumer level, there are quickly diminishing returns when you start talking about more than 4 cores/threads. One user just doesn't do that much at the same time... sure there are the edge cases of people doing video encoding or that sort of thing, but for gaming or general usage tasks there is more benefit from having 4 faster cores than 8+ slower cores.


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SuPeR Xp Oct 18, 2012, 10:10am EDT Reply - Quote - Report Abuse
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>> Re: AMD FX - Steamroller
How about having 8 faster cores vs. 4 cores. My FX 8120 runs performs better with all 8 Cores at 4.40GHz vs. 4 cores at the same speed.

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Bungle Oct 25, 2012, 11:18am EDT Reply - Quote - Report Abuse
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>> Re: AMD FX - Steamroller
It still comes down to single threaded performance... Unless you are the type that is ripping 4 bluray movies at the same time while folding and playing a game you'd probably be better off with 4 5GHz cores than with 8, 12, 16, or even 32 3GHz cores. Extra threads don't do anything for you if you cant tax them.

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SuPeR Xp Oct 25, 2012, 07:28pm EDT Reply - Quote - Report Abuse
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>> Re: AMD FX - Steamroller
Eventually single threading will be dead in the water. But until that day comes, you have a valid point. Either way multi-core tech is here to stay. Eventually AMD will catch up to single threading performance. I am impressed with the new FX-8350, it shows AMD in on the right track.

Also regarding gaming I don't blame multi-core CPU's for not performing good in games, I blame the LAZY, SLOPY coding. Once these developers take there head out of there arise, and get serious about game development, we will always have inconsistencies.

For instance, PC Games should run much better and should look much better than most current look, but this bloody lazy console porting is one of the culprits in bad coding.

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Bungle Oct 27, 2012, 03:57pm EDT Reply - Quote - Report Abuse
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>> Re: AMD FX - Steamroller
Also regarding gaming I don't blame multi-core CPU's for not performing good in games, I blame the LAZY, SLOPY coding. Once these developers take there head out of there arise, and get serious about game development, we will always have inconsistencies.


I don't write games but I do database development for a living. While there some things that can be more heavily threaded to improve performance some operations simply cannot be spread evenly across muliple cores. Anytime you have an operation that is dependent on the results of the previous one (serial operations) then there is no way to speed it up other than to increase single threaded performance. Also muli treading can help but it can also hinder depending on what is being done, there is some extra overhead when you start dealing with muliple threads in some cases there is more overhead than gain by running some operations in separate threads.

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SuPeR Xp Oct 27, 2012, 10:28pm EDT Reply - Quote - Report Abuse
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>> Re: AMD FX - Steamroller
Well a lot of my thunder also comes from the fact most PC games are console ports. This IMO is a huge mistake, developing a game based on old hardware. What you get in return is an inferior product. No extra texture packs are going to help the PC version of the game look better.

Anyhow you've made a great point regarding single/multi-threading in games. To me it's possible, it will just take more time to perfect it.

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Bungle Oct 30, 2012, 11:47am EDT Reply - Quote - Report Abuse
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>> Re: AMD FX - Steamroller
SuPeR Xp said:
Well a lot of my thunder also comes from the fact most PC games are console ports. This IMO is a huge mistake, developing a game based on old hardware. What you get in return is an inferior product. No extra texture packs are going to help the PC version of the game look better.

Anyhow you've made a great point regarding single/multi-threading in games. To me it's possible, it will just take more time to perfect it.


I agree console ports are crap, and I'm not saying that multi threading doesn't help, it does, I'm just saying that something will require higher single threaded performance to go faster.

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SuPeR Xp Nov 01, 2012, 10:54am EDT Reply - Quote - Report Abuse
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>> Re: AMD FX - Steamroller
Yes agreed. I don't fully blame developers, but I do blame there employer for pushing crap on them with limited funds and forcing them to design on garbage old console hardware then lazily porting them over to PC.

Name 5 new games (2011-2012) that were specifically designed on the PC platform. Then name 5 console ports onto PC. Then compare them. I await your reply or anybody that would like to contribute. :)

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Bungle Nov 01, 2012, 10:57pm EDT Reply - Quote - Report Abuse
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>> Re: AMD FX - Steamroller
I don't think that there have been 5 games in the last year or two that were PC exclusives... not AAA titles at least.

At any rate I can understand a software dev house forcing compatibility to the consoles... as much as I dispise them they are a big market and there is a lot of untapped revenue if they don't make games for them.

What I would really like to see is some of the bigger names... nVidia, Intel, AMD, maybe even EVGA, Corsair, and OCZ get together and subsidize a game company that would unappologetically make nothing but AAA games that focused on pushing the envelope in every category... something like a Crysis 1 every 9mos to a year would drive hardware sales... surely collectively they would stand to benefit more than the Development house would cost them... even if the Development house lost $40M a year how many GPUs would be sold trying while PC gamers upgraded to pick up a few FPS? It would cost each company what $5 - 8 million a year to add $2-300 Million in sales on the highend?

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SuPeR Xp Nov 01, 2012, 11:30pm EDT Reply - Quote - Report Abuse
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>> Re: AMD FX - Steamroller
Good idea.
An interesting fact is PC Gaming sales have been growing year after year and by 2014-2015, they should surpass consoles.

This falls right in line with the release of the new consoles, that both Sony and Micro$oft hope to revamp that industry. PC digital download games is where it's at. A simple argument and a very easy one to win would be, how many people own a PC? 2B, 3B, 4Billion? And how many people own a console? Easy one, PC wins hands down.

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steve mace Nov 14, 2012, 03:32pm EST Reply - Quote - Report Abuse
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Edited: Nov 14, 2012, 03:34pm EST

 
>> Re: AMD FX - Steamroller
SuPeR Xp said:
There's always about 1000 or more anonymous people on this Site. People join please, no sense in being anonymous.



Sander, or whatever he was called stopped writing articles years ago!
Even though the community survives, I guess people consider the place kind of dead because of this, what the hell happened to him anyway?


SuPeR Xp Nov 17, 2012, 04:58pm EST Reply - Quote - Report Abuse
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>> Re: AMD FX - Steamroller
If you look in the past, like the era of the Athlon XP and Athlon 64, it was me along with several others which made this Site alive and kicking. Not sure what happened when all of a sudden we stopped posting here. I am mostly on TechPowerUp Forums, though I do come here once in a while. I would start posting more on here, if there were more people posting instead of being anonymous.

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Bungle Nov 17, 2012, 11:24pm EST Reply - Quote - Report Abuse
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>> Re: AMD FX - Steamroller
This site suffers from the "chicken and egg" problem, the forum is not very active because there aren't enough active users loggin in every day, and active users dont come here because no one posts...

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