The facts people are missing is this:
The CPU is a dual core, but has the physical elements making it seem like a quad core, but it really isn't. I believe the way HT works is it's physically 2 cores with each core running 2 threads at the same time, hoping they don't collide. Bulldozer CPUs are 2 physical cores that run 2 threads in physically separate locations.
The next fact is AMD removed the total amount of instructions per clock in order to increase clock speed. Thats why if you were to take a 3.6Ghz single-core Phenom (if that even exists) and have the FX-4100 face off in single-threaded tasks, the Phenom will immensely outperform, even though everything about it is supposedly worse.
I may be wrong about this, but I believe that if a single-threaded task is run on 1 core, the other thread of that core can't be used. Whereas with HT, there is no restriction. This can cause significant slow-downs.
The CPU is a dual core, but has the physical elements making it seem like a quad core, but it really isn't. I believe the way HT works is it's physically 2 cores with each core running 2 threads at the same time, hoping they don't collide. Bulldozer CPUs are 2 physical cores that run 2 threads in physically separate locations.
The next fact is AMD removed the total amount of instructions per clock in order to increase clock speed. Thats why if you were to take a 3.6Ghz single-core Phenom (if that even exists) and have the FX-4100 face off in single-threaded tasks, the Phenom will immensely outperform, even though everything about it is supposedly worse.
I may be wrong about this, but I believe that if a single-threaded task is run on 1 core, the other thread of that core can't be used. Whereas with HT, there is no restriction. This can cause significant slow-downs.
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