help help help wtf dose this mean
- Thread starter Panos_
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nukemaster
Titan
- Nov 23, 2004
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AMD's 8 core cpus share some of the parts between cores(I think it is one floating point unit per 2 cores). because of this it only has 4 full cores.
This is the same with the 3 core version.
It is perfectly normal and will not change how the system operates.
EDIT.
See here
https://en.wikipedia.org/wiki/Bulldozer_%28microarchitecture%29#CMT
This is the same with the 3 core version.
It is perfectly normal and will not change how the system operates.
EDIT.
See here
https://en.wikipedia.org/wiki/Bulldozer_%28microarchitecture%29#CMT
jakegroves
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- Jan 31, 2015
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AMD use modules, it is a way how a pc salesman will sell you a 8 core processor :O and then you find out it is 4 physical cores.
It acts as if it is 8 cores, but the modules only act with the same power.
You could argue a logical core is like a thread ... however this may not get you extra performance as each logical core shares resources with each other.
Difference between hyperthread and logical cores is that the logical cores work side by side.
But the hyperthreaded i7 4790kw ith 4 cores hyperthreaded, truly allows almost 8 core power. This is because imagine one core is a person. One person has a lane(thread) getting information provided ... but imagine the hyperthrading putting on another lane(thread) for information to get processed.
The physical core (person) can only work on one lane at a time. But it does so with such speed with distribution because other cores can kick in and help. Thus creating the power intel helds
But yer hope that explains why AMD's "8cores" is flawed, due sharing the same resources.
It acts as if it is 8 cores, but the modules only act with the same power.
You could argue a logical core is like a thread ... however this may not get you extra performance as each logical core shares resources with each other.
Difference between hyperthread and logical cores is that the logical cores work side by side.
But the hyperthreaded i7 4790kw ith 4 cores hyperthreaded, truly allows almost 8 core power. This is because imagine one core is a person. One person has a lane(thread) getting information provided ... but imagine the hyperthrading putting on another lane(thread) for information to get processed.
The physical core (person) can only work on one lane at a time. But it does so with such speed with distribution because other cores can kick in and help. Thus creating the power intel helds
But yer hope that explains why AMD's "8cores" is flawed, due sharing the same resources.
nukemaster
Titan
- Nov 23, 2004
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Intel's performance lead is mostly down to IPC(instructions per clock). This means at the same clock speed it will get more done.
HyperThreading is not technically superior to AMDs modules, just the normal cores are already faster. In some cases HT can slow things down, but others it is MUCH faster(multicore video rendering.).
At the same time, software optimized for AMDs core design can be faster on AMD's cpus.
Bottom line, do not worry about it.
HyperThreading is not technically superior to AMDs modules, just the normal cores are already faster. In some cases HT can slow things down, but others it is MUCH faster(multicore video rendering.).
At the same time, software optimized for AMDs core design can be faster on AMD's cpus.
Bottom line, do not worry about it.
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