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post #11 of 14
Run software that uses all 8 cores at load, then see what the performance tab shows cpu load. Your not gonna get much activity from 8 cores watching youtube or playing minesweeper. Try encoding, wprime or folding at home. If you don't see full load then, you have a problem.
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post #12 of 14
Quote:
Originally Posted by DracoManX69 View Post

Quote:
Originally Posted by Oedipus View Post

You don't have 8 cores.
ummm...yes i do, it's an amd fx-8120,
1. task manager shows the 8 cores
2. http://shop.amd.com/us/All/Detail/Processor/FD8120FRGUBOX it's listed officially as 8 cores

not really.
Quote:
It's not a simple answer. Yes, the FX 8120 does have 8 cores, but each of the cores shares resources with another core. Therefore, one core can be waiting while the other core is busy using those shared resources. The FX-8120 has 4 modules each of them contains two cores and the shared resources.

similar to HT in a way, since all 8 cores cant access resources at same time, but anyways 8 BD "cores" are no better than 4 i7 cores +HT
     
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post #13 of 14
Quote:
Originally Posted by yanks8981 View Post

No. 2600K is 4 core with HT

bigeyedsmiley.png

Quote:
Originally Posted by SectorNine50 View Post

Oedipus' point is that the "8 core" AMD chips have 4 modules, and each pair of integer cores shares cache. So in practice, the FX series integer cores aren't actual cores in the literal sense (otherwise they'd have their own cache). The modules are more synonymous with hyperthreading due to the fact that only one core can access the cache at a time, so you end up with a similar thread stall that hyperthreading sees, just in a different part of the process.
Windows recently had an update where it changed how it handled AMD's FX cores, if I recall correctly. The performance of each integer core is much better when only one core in each module is active. Since Windows is hardly loaded, there is no reason for it to use the other core in the module, and the system probably sees better performance this way.
I wouldn't worry about this behavior. As long as it scales to all 8 cores when fully loaded, everything is acting as it should.

You are the man.
    
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post #14 of 14
Quote:
Originally Posted by Oedipus View Post

bigeyedsmiley.png
You are the man.

I didn't realize you weren't being serious. smile.gif
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