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post #71 of 130
Probably, though neither would be better than full cores.

Keep in mind all BD is sharing I believe for the most part is the L2 and FPU. The integer pipelines aren't shared. The cores aren't designed for max performance, they're designed to save die space and reduce power usage. (as far as I understand it)

I hate Intels HT, its bs for gamers.
    
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post #72 of 130
http://citavia.blog.de/2011/04/07/am...line-10968638/

c´mon people, wear more optimism

Quote:
Originally Posted by BallaTheFeared View Post
Probably, though neither would be better than full cores.

Keep in mind all BD is sharing I believe for the most part is the L2 and FPU. The integer pipelines aren't shared. The cores aren't designed for max performance, they're designed to save die space and reduce power usage. (as far as I understand it)
intel HTT (SMT) - needs 5% more die space, performance from 2 threads (1core) is from ~125% to ~90%
Yes, sometimes SMT hurts performance

Bulldozer CMT - second integer core in module needs 12% more die space, performance of 2 BD threads (1module) ~180%

Standard dualcore (CMP)- second core needs 100% more die space, performance of dualcore is ~ 195%

Quote:
I hate Intels HT, its bs for gamers.
how true, REP
Edited by pietro sk - 4/9/11 at 6:49am
    
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post #73 of 130
I'm not too keen on an article that references floating-point 6 times.
    
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post #74 of 130
Quote:
Originally Posted by BallaTheFeared View Post
I'm not too keen on an article that references floating-point 6 times.
pick what you like..
    
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post #75 of 130
hehe or ignore things that don't matter.

Edit: Your image is from 2005, has AMD really delayed Bulldozer that much?
Edited by BallaTheFeared - 4/9/11 at 8:18am
    
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post #76 of 130
Quote:
Originally Posted by pietro sk View Post
c´mon people, wear more optimism
While I have no doubt Bulldozer's CMT is better than Intel's HT, that's still only going to be apparent in heavily multi-threaded applications or during heavy multi-tasking. Assuming no IPC improvements, all that means is they can build "Deneb" and "Thuban" for just around 56% of the cost. What I'm really looking forward to see in Bulldozer is single threaded performance improvement.

Even if Bulldozer doesn't perform as well as some AMD loyalists predict, AMD is in a unique position to take over the bigger low-end/mid-range mainstream and notebook market with Llano. Most people don't need oodles of CPU power but they can stand to benefit from improved GPU performance, something that Intel's been struggling to deliver for years. Of course, Trinity (Bulldozer-based APU) should be even better.
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post #77 of 130
Quote:
Originally Posted by pietro sk View Post
Bulldozer CMT - second integer core in module needs 12% more die space, performance of 2 BD threads (1module) ~180%
You are totally missing the point. HT is crap, its crap for Intel, its crap for AMD at least from my perspective. My perspective involves per core performance, not total cores or how many cores you can put on a cpu.

180% output with 2 cores, then the 4 core version of Bulldozer when playing modern games like BFBC2 or Mafia 2 will be operating at 360% instead of 400%.

Once again HT is dumb, no matter how you do it.
    
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post #78 of 130
I'm sure I read before from JF, that when BD is using only one core in a given module it gets full use of all the resources and therefore acts as a complete uncompromised BD core. The 180% figure only applies if both cores are being utilitised. So from a gamers perspective, if only two cores are being used, they will be full cores.

Maybe JF could clarify this... maybe I dreamed it!?
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post #79 of 130
Sounds about right, but then the design is flawed as you'd need a 8 core chip to get maximum core performance in a game using 4 threads.

I also am under the impression that since windows will spread threads across more cores than the thread count its going to slightly hinder performance even in single/dual threaded applications compared to a full fledged bulldozer core.

The last thing I was thinking of was the fact that resource sharing doesn't boost gaming performance, so there is no real benefit to its design for a gamer. The worst part of all is the fact that its a hardware design, there will be no option to turn it off and there won't be a i5 version without a feature you don't want.
Edited by BallaTheFeared - 4/9/11 at 6:32pm
    
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post #80 of 130
If I can get a BD for my M4A89 by the end of summer that can really push 2 6950s, then in the fall I will CF, if not, I don't know what, CF anyway....

Because I will not be playing Metro 2033 until I can pretty much max it and get at least a 50fps average
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