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[TPU] Bulldozer 50% Faster than Core i7 and Phenom II - Page 15

post #141 of 181
Still want Ivy Bridge. Or socket 2011.

No AMD for me.
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post #142 of 181
Quote:
Originally Posted by blackbalt89 View Post
Still want Ivy Bridge. Or socket 2011.

No AMD for me.
Thank you...Thank you for that...
post #143 of 181
Quote:
Originally Posted by decimate View Post
Thank you...Thank you for that...
All this talk about BullDozer being 50% faster than a quad core doesn't impress me.

No crap an 8 core will be at least 50% faster. Hell it should be ONE HUNDRED PERCENT faster. But it's not.

Go figure AMD. Try to fool the unsuspecting into thinking your 8 core is God's gift to the world. Funny how they didn't compare the speeds to Sandy Bridge isn't it.

I'd like to see BD octocore vs i7-2600k. If it can show a 50% increase then I'd shat brix.
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post #144 of 181
Quote:
Originally Posted by blackbalt89 View Post
All this talk about BullDozer being 50% faster than a quad core doesn't impress me.

No crap an 8 core will be at least 50% faster. Hell it should be ONE HUNDRED PERCENT faster. But it's not.

Go figure AMD. Try to fool the unsuspecting into thinking your 8 core is God's gift to the world. Funny how they didn't compare the speeds to Sandy Bridge isn't it.

I'd like to see BD octocore vs i7-2600k. If it can show a 50% increase then I'd shat brix.
You don't even have the slightest clue how BD performs yet. You've based your whole decision on rumors. Get real.
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post #145 of 181
Quote:
Originally Posted by blackbalt89 View Post
All this talk about BullDozer being 50% faster than a quad core doesn't impress me.

No crap an 8 core will be at least 50% faster. Hell it should be ONE HUNDRED PERCENT faster. But it's not.

Go figure AMD. Try to fool the unsuspecting into thinking your 8 core is God's gift to the world. Funny how they didn't compare the speeds to Sandy Bridge isn't it.

I'd like to see BD octocore vs i7-2600k. If it can show a 50% increase then I'd shat brix.
The i7-9XX series and the i7-2600(+K) aren't just quad core CPU's though they have 4 logical cores as well. And since there aren't any applications able to use 8 cores then it can't really be 100% faster because the software won't utilize the hardware.
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post #146 of 181
If BD doesn't beat SB then AMD might as well quit....
    
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post #147 of 181
Uhh... guys
We can't do a core-for-core comparison with Bulldozer
Bulldozer will redefine what a "core" is. There is absolutely no merit in comparing cores here, because Bulldozer costs about the same to make and is about the same size as the equivalent Intel processor with HyperThreading anyway. This is what the Bulldozer architecture is supposed to be about: efficiency. The only proper comparison would be price and per-thread performance when it comes out.

In addition, I don't think any of you have paid attention to what's out there about Bulldozer at all. Bulldozer may come with 4Ghz as a stock speed. It has been stated before that Bulldozer chips will have a 3.5Ghz clock speed; it has also been stated before that across all 16 integer cores [in the server variant] there will be up to 500Mhz turbo boost. I guess we'll see when it's out, because these are rumours... but this IS the "Rumours and unconfirmed articles" forum.
Edited by xd_1771 - 1/20/11 at 5:45pm
post #148 of 181
Quote:
Originally Posted by blackbalt89 View Post
All this talk about BullDozer being 50% faster than a quad core doesn't impress me.

No crap an 8 core will be at least 50% faster. Hell it should be ONE HUNDRED PERCENT faster. But it's not.

Go figure AMD. Try to fool the unsuspecting into thinking your 8 core is God's gift to the world. Funny how they didn't compare the speeds to Sandy Bridge isn't it.

I'd like to see BD octocore vs i7-2600k. If it can show a 50% increase then I'd shat brix.
I think that I'll quote myself for this one in order to save some typing. The short version is that the second integer core is a more consistent answer to SMT while consuming a similar amount of die space (the an "8-core" unit is only 4 compete cores with some additional integer cores which make it similar to 4-cores with SMT). It is only a part of the total core and cannot therefore double performance.

Quote:
Originally Posted by hajile View Post
I guess I'll weigh in.

A BULLDOZER MODULE IS NOT TWO COMPLETE CORES!!!

AMD may like for you to believe this to be true, but it is not (strictly speaking). Each module has only one FPU (floating point unit) The addition of the second "core" (which is only for integers NOT floats) takes only 12% additional die space for DOUBLE the INTEGER performance (but shares the float unit making the second integer core incomplete ie not real). SMT (simultaneous multithreading AKA hyperthreading) on Intel chips takes 5% additional die space and only offers 10-30% performance increases and it will result in performance loss when efficient programming algorithms are used.

edit: AMD claims 80% increase in total performance for the addition of a second integer core. The likely reason that performance is not doubled is caused by an integer unit waiting to use the FPU. As more float calculations are offloaded to a dedicated unit, it can be hypothesized that integer performance will approach the magic 100% mark (it is still possible for the only float numbers used in quite a while to still need to be crunched at the same time thus making the guarantee of 100% theoretically impossible (scheduling aside), but at that point performance difference would be only one cycle which is insignificant when measuring in gigahertz)


Most benchmarks measure FLOPS (floating point operations per second). Because an "eight core" bulldozer processor only has 4 FPU's, it having equal FLOAT performance to a quad-core i7 (which also has 4 FPU's) is not completely surprising nor is it surprising that a benchmark would show them as nearly equal in performance. It should also be mentioned that any benchmarks used were not likely to have been compiled for AVX and if they were, bulldozer performance would increase drastically. If a benchmark were to take only integer performance into account, it is likely that a four module bulldozer would mop the floor with a four-core sandy bridge because bulldozer has eight integer cores. It is also noteworthy that the most commonly used non-graphical applications (word processors, web browsers, etc) use many times more integer calculations than float calculations.

One last thing to note on FPU performance: AMD isn't interested in super fast x86 FPU's. AMD bought ATI in order to take advantage of the extreme float power inherent in graphics cards. The fastest supercomputer in the world (FLOPS not integer) uses a horde of Nvidia graphics cards. Integrating a graphics card (or using an add in card) is much more efficient (per mm^2) at floats than increasing the number of x86 float units (if the majority of the floats are offloaded, one FPU can satisfy the needs of more than one integer unit).

All that said, I look forward to the upcoming sandy bridge vs bulldozer cage match.

Edited by hajile - 1/20/11 at 9:27pm
post #149 of 181
Quote:
Originally Posted by blackbalt89 View Post
All this talk about BullDozer being 50% faster than a quad core doesn't impress me.

No crap an 8 core will be at least 50% faster. Hell it should be ONE HUNDRED PERCENT faster. But it's not.

Go figure AMD. Try to fool the unsuspecting into thinking your 8 core is God's gift to the world. Funny how they didn't compare the speeds to Sandy Bridge isn't it.

I'd like to see BD octocore vs i7-2600k. If it can show a 50% increase then I'd shat brix.
wow this makes me
    
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post #150 of 181
Quote:
Originally Posted by blackbalt89 View Post
All this talk about BullDozer being 50% faster than a quad core doesn't impress me.

No crap an 8 core will be at least 50% faster. Hell it should be ONE HUNDRED PERCENT faster. But it's not.
Your argument loses its validity as soon as you remember its an Octocore because of AMDs version of HT, its still 4 modules.
    
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