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The Zambezi CPU Performance Estimate... - Page 4

post #31 of 354
Quote:
Originally Posted by blackbalt89;12313614 
All I was trying to say is exactly what has been said in the post against mine. They're comparing Bulldozer to a Nehalem processor clocked at a measly 3.06ghz. Of course newer tech will prevail.

In essence I was trying to point out that Bulldozer needs to be compared not to tech from 2008 but tech from 2011 (Sandy Bridge) in which case I would be much more amazed that their 8 core can beat a Sandy quad with HT which is not even equated to 4 full cores, but rather something like half a core each.

If Bulldozer > Sandy Bridge then I will retract my previous statement.

Assuming it's true, which is obviously a stretch, the biggest takeaway from the performance slide is the supposed 50% improvement in games. Assuming AMD didn't magically find a game that scales well beyond 4 cores, that large improvement could be a sign of substantial IPC improvements. Sandy Bridge isn't that much faster than a 1366 i7 in games, despite having slightly improved IPC.
    
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post #32 of 354
There needs to be a section on OCN for this, something that doesn't show up on Latest Discussions. Honestly, its any ones guess what performance is going to be like. All we can do is hope for the best because competition is key for pricing.
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post #33 of 354
Quote:
Originally Posted by _GTech View Post
Ok, so we have the Intel Core i5-750 @ 3.2 GHz (OC), with 4 cores..
(It can do 4.0 GHz but we will be using 3.2 GHz for calculating purposes)

Then we have the reportedly* 3.5 GHz 8 Core Zambezi with Turbo Core which can add another 500 MHz across 8 cores... Which = 4.0 GHz essentially...
(*rumored)

Anyone care to do the math to compute the "possible / probable" performance output here?

+Rep to those show their Math Work!

I want a guesstimate of the probable performance output in an understandable % Performance Gain + GFlops + Passmark CPU Score, if possible.
I have found new found respect for the OP as hes been asking the questions we should all be thinking. +REP

Cant offer anything towards the thread, even if I had the numbers, I probably couldnt do anything with it as my math isnt the greatest
    
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post #34 of 354
Quote:
Originally Posted by TheReciever View Post
I have found new found respect for the OP as hes been asking the questions we should all be thinking. +REP

Cant offer anything towards the thread, even if I had the numbers, I probably couldnt do anything with it as my math isnt the greatest
Except the question is pointless because it is impossible to answer till benchs get released.
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post #35 of 354
Quote:
Originally Posted by beers View Post
Secret benchmark released:

There's a lot of win in that benchmark XD
   
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post #36 of 354
Quote:
Originally Posted by scyy View Post
Except the question is pointless because it is impossible to answer till benchs get released.
When I mentioned "questions", I meant more than this thread.

This is exactly what im pointing out, individuals should stop thinking within the boundaries of their closed realities.

But I guess its just as pointless as you feel this thread is lol
    
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post #37 of 354
Quote:
Originally Posted by _GTech View Post
Ok, so we have the Intel Core i5-750 @ 3.2 GHz (OC), with 4 cores..
(It can do 4.0 GHz but we will be using 3.2 GHz for calculating purposes)

Then we have the reportedly* 3.5 GHz 8 Core Zambezi with Turbo Core which can add another 500 MHz across 8 cores... Which = 4.0 GHz essentially..
Don't forget, this is 500Mhz reportedly across 16 cores on the server variant.
Which probably means we will see even bigger boosts on the desktop version with all cores; I'm estimating around 700-900Mhz, which means we may be seeing 4.2-4.4Ghz stock speeds. But remember, smaller cores offer much more turbo boost. Remember, 2 cores = 1 module on Bulldozer. For the same of simplicity cores here will be referring to the integer cores, not entire modules. So, going by this math, assuming BD has excellent scaling:
16 cores = 500Mhz turbo (server variant)
8 cores = 700Mhz turbo (desktop variant from here on in)
6 cores = 850Mhz turbo
4 cores = 1000Mhz turbo
2 cores = 1500Mhz turbo (much less TDP with only 1 module, so better scaling)
Though the values could be necessarily less, the overclockability of Bulldozer can be very easily predictable. If Turbo Boost is high enough, sometimes we may be able to see 5Ghz+ rated speeds!

My personal prediction (without any math involved) is 5.5Ghz+ all cores on air, 8Ghz+ on LN2... of course that's me, but still
Edited by xd_1771 - 2/8/11 at 4:33pm
post #38 of 354
Quote:
Originally Posted by TheReciever View Post
When I mentioned "questions", I meant more than this thread.

This is exactly what im pointing out, individuals should stop thinking within the boundaries of their closed realities.

But I guess its just as pointless as you feel this thread is lol
It's not "thinking within the boundaries of their closed realities." It's the facts, any speculation about performance of bulldozer is just that, speculation with zero basis on any actual hard numbers.
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post #39 of 354
Quote:
Originally Posted by scyy View Post
It's not "thinking within the boundaries of their closed realities." It's the facts, any speculation about performance of bulldozer is just that, speculation with zero basis on any actual hard numbers.
Correct, finding factual numbers will be impossible. But if you use Moore's Law to project some estimates then you can begin to have an idea whats come.
    
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post #40 of 354
Quote:
Originally Posted by TheReciever View Post
Correct, finding factual numbers will be impossible. But if you use Moore's Law to project some estimates then you can begin to have an idea whats come.
There are so many more variables to consider rather just scaling laws. The answer really is no. You just can't estimate it without having inside knowledge. The average reported difference between 45nm Core 2 and 45nm Core i7 is 12%...there is only an architecture difference. We are talking about an architecture change, adding more cores, increasing cache, and a die shrink....there is no way to estimate all of it.

We will know when it is out (This isn't a sandybrige vs. bulldozer fanboy issue. I am 99% sure I am going to buy bulldozer)
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