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post #41 of 146
Quote:
Originally Posted by BallaTheFeared View Post
Yeah that matters, because every game uses 6+ cores.
Quote:
Originally Posted by BallaTheFeared View Post
Yeah, thats what windows does.

It will spread a thread over multiple cores.

Didn't you know that?
If Windows spreads the game over all the cores doesn't that mean it's using all the cores?

@OP are you getting good FPS in your games? If so, who gives a ****? All this 'bottle-necking' arguing is silly. Personally I would rather not have my GPU usage at 100% all the time. I would rather have a setup that is overkill and runs at 50% in games so it's not so damn hot and loud. Maybe you just need newer games to come out to utilize your incredible GPU setup.
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post #42 of 146
Quote:
Originally Posted by LastBucsfan View Post
If Windows spreads the game over all the cores doesn't that mean it's using all the cores?

@OP are you getting good FPS in your games? If so, who gives a ****? All this 'bottle-necking' arguing is silly. Personally I would rather not have my GPU usage at 100% all the time. I would rather have a setup that is overkill and runs at 50% in games so it's not so damn hot and loud. Maybe you just need newer games to come out to utilize your incredible GPU setup.
I agree with not having my gpu's run at 99-100% all the time. I run Surround with Vsync on as many games as I can that are above 60fps average. It'll drop from 99% down to 30-50% and stay pegged @ 60fps. Cards stay cooler as well.
 
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post #43 of 146
Also it should be noted that NONE of the cores in his CPU graphs are hitting 100%.

How could the CPU be the bottleneck then?
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post #44 of 146
Thread Starter 
FPS is all over the place playing MWLL and as this rig is built to play that specific game I am understandably frustrated with its performance. I get high usage using one 5870, but I bought a second for the scaling and higher FPS. I currently get next to none playing this game.

I will be going either BD or SB soon so I will let you know the difference in FPS and GPU usage once I do.

Thanks all.
    
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post #45 of 146
Thread Starter 
Quote:
Originally Posted by LastBucsfan View Post
If Windows spreads the game over all the cores doesn't that mean it's using all the cores?

@OP are you getting good FPS in your games? If so, who gives a ****? All this 'bottle-necking' arguing is silly. Personally I would rather not have my GPU usage at 100% all the time. I would rather have a setup that is overkill and runs at 50% in games so it's not so damn hot and loud. Maybe you just need newer games to come out to utilize your incredible GPU setup.
Not trying to come off as being rude mate, but I have two GPU's. If I have them both running at 50% I may as well have one. I bought the second one for the GPU scaling in crossfire, so I am pretty miffed that I am not getting it.
    
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post #46 of 146
It looks like a bottleneck. I ran two 5870s at one point and wrecked everything with my i7 920.



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post #47 of 146
Quote:
Originally Posted by LastBucsfan View Post
If Windows spreads the game over all the cores doesn't that mean it's using all the cores?

Quote:
Originally Posted by LastBucsfan View Post
Also it should be noted that NONE of the cores in his CPU graphs are hitting 100%.

How could the CPU be the bottleneck then?


This is incorrect.

Using all the cores doesn't mean its using all the cores.

Before you hurt yourself, let me explain.

A game/program can only use as many threads as its programed to do. For many games this is two threads.

When a dual threaded game runs on a dual core system and the cpu is bottlenecking you will clearly see it as 100% gpu usage.

Now lets assume you have an x3, that same game bottlenecked would show 66% cpu usage. While the cores would not be maxed out, because of Windows thread shuffling the added core does no provide any increase in performance outside of those gains by background tasks having an additional core to use.

Next we'll look at that same game on a x4 cpu. This time around the cpu is still bottlenecking because the game while provided with more cores is still only capable of using 2 threads (cores). Instead of the cpu reading 100% or 66% while bottlenecking, in this case the CPU will read 50%. However you can rest assured, 100%, 66%, 50%, it doesn't matter. The performance is exactly the same.

Now we've arrived at the x6. Using the same game as reference the Phenom II 1090T is bottlenecking same as the 965, same as the 555. However the cpu usage when only 2 threads (cores) are used and are maxed out will only reach about 33%. Its the same bottleneck, with the same performance. The added cores do not improve the performance of the game.

To figure that out yourself, 100% on 6 cores is roughly 16.67% cpu usage per 100% usage core.



Now on to Windows spreading a single thread over multiple cores and why its not the same as all cores being used.

For this demonstration we'll use Super Pi. Super Pi is a single threaded benchmark tool. It doesn't matter if you have 1 core or a 48 core server setup, it will only use 1 thread (1 core). However if you run Super Pi with out changing its core affinity Windows will spread that one thread over all available cores. That means if you have an AMD 1090T and 6 cores while running Super Pi you will see activity on all 6 cores most likely (about 12.67% total cpu load), however your performance will be exactly the same if you set the affinity of the program just use 1 core. If you set it to just use 1 core the total cpu usage would still be 12.67%, however one core would be pegged at 100% this time instead of the same thread being spread over multiple cores.



What does this all mean? It means you clearly do not understand what it is I'm talking about, but there is a chance you may now. It means the OP doesn't need to have one or two cores at 100% usage, nor does he need all six cores to read 100% usage for there to be a cpu bottleneck.


I hope this helps.
Edited by BallaTheFeared - 5/2/11 at 2:55pm
    
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post #48 of 146
Why do people make ridiculous threads like this?

By ridiculous, I mean why would you even for a moment think that a 4ghz six core processor would "bottleneck" a pair of mid ranged cards ?

And what does bottlenecking even mean? "The flow of data from your processor is not enough for your grapics card so u lgaz" .

I would rename the thread if I were you. And I would try rolling back on drivers.


Quote:
Originally Posted by BallaTheFeared View Post
This is incorrect.

Using all the cores doesn't mean its using all the cores.

Before you hurt yourself, let me explain.

A game/program can only use as many threads as its programed to do. For many games this is two threads.

When a dual threaded game runs on a dual core system and the cpu is bottlenecking you will clearly see it as 100% gpu usage.

Now lets assume you have an x3, that same game bottlenecked would show 66% cpu usage. While the cores would not be maxed out, because of Windows thread shuffling the added core does no provide any increase in performance outside of those gains by background tasks having an additional core to use.

Next we'll look at that same game on a x4 cpu. This time around the cpu is still bottlenecking because the game while provided with more cores is still only capable of using 2 threads (cores). Instead of the cpu reading 100% or 66% while bottlenecking, in this case the CPU will read 50%. However you can rest assured, 100%, 66%, 50%, it doesn't matter. The performance is exactly the same.

Now we've arrived at the x6. Using the same game as reference the Phenom II 1090T is bottlenecking same as the 965, same as the 555. However the cpu usage when only 2 threads (cores) are used and are maxed out will only reach about 33%. Its the same bottleneck, with the same performance. The added cores do not improve the performance of the game.

To figure that out yourself, 100% on 6 cores is roughly 16.67% cpu usage per 100% usage core.



Now on to Windows spreading a single thread over multiple cores and why its not the same as all cores being used.

For this demonstration we'll use Super Pi. Super Pi is a single threaded benchmark tool. It doesn't matter if you have 1 core or a 48 core server setup, it will only use 1 thread (1 core). However if you run Super Pi with out changing its core affinity Windows will spread that one thread over all available cores. That means if you have an AMD 1090T and 6 cores while running Super Pi you will see activity on all 6 cores most likely (about 12.67% total cpu load), however your performance will be exactly the same if you set the affinity of the program just use 1 core. If you set it to just use 1 core the total cpu usage would still be 12.67%, however one core would be pegged at 100% this time instead of the same thread being spread over multiple cores.



What does this all mean? It means you clearly do not understand what it is I'm talking about, but there is a chance you may now. It means the OP doesn't need to have one or two cores at 100% usage, nor does he need all six cores to read 100% usage for there to be a cpu bottleneck.



I hope this helps.

Other then the bolded region, what exactly were you trying to say?
Edited by Zackcy - 5/2/11 at 2:58pm
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post #49 of 146
Thread Starter 
Quote:
Originally Posted by Zackcy View Post
Why do people make ridiculous threads like this?

By ridiculous, I mean why would you even for a moment think that a 4ghz six core processor would "bottleneck" a pair of mid ranged cards ?

And what does bottlenecking even mean? "The flow of data from your processor is not enough for your grapics card so u lgaz" .

I would rename the thread if I were you. And I would try rolling back on drivers.
Why do people post in my thread with ridiculous and pointless replies?
Go troll elsewhere.
    
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post #50 of 146
What I'm trying to say is there.

And to answer your question: "why would you even for a moment think that a 4ghz six core processor would "bottleneck" a pair of mid ranged cards"

Because extra cores don't provide additional performance when they cannot be used and because Phenom II core architecture is slower than dirt. Be it an X2 X3 X4 X6 they're all the same, and they're all underwhelming if you're not using a budget build with a budget video card.
    
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