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[Official] AMD Bulldozer Reviews Thread - Page 191

post #1901 of 2308
Quote:
Originally Posted by lordikon View Post
So why release a CPU that isn't properly supported? If AMD understood these they should have been working with software developers to solve this before they released.
CPU comes first, then software.
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post #1902 of 2308
Quote:
Originally Posted by AMD2600 View Post
CPU comes first, then software.
Exactly. It doesn't work the other way
post #1903 of 2308
I haven't seen any flaming. What did I miss?
post #1904 of 2308
Quote:
Originally Posted by AMD2600 View Post
CPU comes first, then software.
Just like you get new GPUs with new APIs before the games using those APIs are released.

DX11 GPUs have been out for 2 years, and just now, Battlefield 3 is the first game designed from the ground up to utilize DX11. Hardware always comes before software.
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post #1905 of 2308
Quote:
Originally Posted by Mad Pistol View Post
THIS! THIS! THIS! THIS! A THOUSAND TIMES THIS!!!


People don't seem to get that BD was designed with a certain software usage in mind, which is why the design is so radically different. If 2 cores are competing for L2 cache, of course it's going to drop efficiency (and IPC). However, if the program is designed to utilize this design, I bet IPC rises dramatically, even when using all 8 cores.

Windows 7 and programs don't know how to utilize this design. That's the problem.


I almost want to bet that AMD cuts the L2 cache into 8 sections (1 for each integer core) for the next iteration of Bulldozer chips, and puts in an interconnect between the sets of L2 cache in each module. I bet that increases IPC a bit.
This must be the relief you were looking for huh?
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post #1906 of 2308
People are defending AMD because hardware comes first, then software? That's grasping at straws. With all the time that BD has been in development, you don't think there should be software to support it by launch time?
post #1907 of 2308
Quote:
Originally Posted by BizzareRide View Post
This must be the relief you were looking for huh?
I wouldn't call it relief. It just does a good job at explaining why BD doesn't perform well.

I'm still not buying BD. There's no reason to.
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post #1908 of 2308
Quote:
Originally Posted by Majin SSJ Eric View Post
I haven't seen any flaming. What did I miss?
Around 80 deleted posts
post #1909 of 2308
Quote:
Originally Posted by robbo2 View Post
This makes me harder then when people buy i7 and turn HT off.
Hyper-Threading went through it's share of adoption issues as well.

Fortunately for Intel, HT has been largely understood by OSes since late 2002 when Intel implemented it in it's Xeons and Pentium IVs. When the i7s hit the scene in late 2008, early 2009, every major OS had already had good HT support for years.

BD had no such predecessor to pave the way for the peculiarities of the module approach.

Obviously, you shouldn't buy an 8-core bulldozer to disable half the cores, that would be stupid and wasteful. However, manually setting core affinities to improve lightly threaded performance, at least until OSes are patched, may net some people worthwhile gains.

In the end, these updates and considerations aren't likely to completely turn around BD performance; anyone expecting such a thing is fooling themselves. However, I would not be surprised if, in 6-12 months, BD was ~10% faster overall, with no changes to hardware.
Edited by Blameless - 10/13/11 at 6:36pm
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post #1910 of 2308
Quote:
Originally Posted by linkin93 View Post
Maybe all it needs is, you know, a software patch, perhaps something called a driver?

At the moment, using the FX CPU's as they are right now, without a proper driver or BIOS or software patch or whatever, it could be like playing games without your GPU driver installed:

Sure it works, but what about optimisations?

Hence, people of OCN, you make me
You make me

Stop making excuses. You're not an AMD engineer or anything. And Windows 8, which has an optimized scheduler? Still not equal to a 2500k.

Even if it was equal performance wise, the 2500k still has better power efficiency.

Quote:
Originally Posted by linkin93 View Post
Exactly. It doesn't work the other way
And by the time the software comes, both Bulldozer and Sandy Bridge will be irrelevant.
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