All else being equal, which is faster? A. 2 core CPU at 4GHz

>>60865878
The 2 core CPU is faster, obviously.

>>60865878
>Which is a faster way to move people, a Ferrari or a bus?

>>60865878
Depends on the task.

>>60865878
2 cores because Amdahl's law and Hitler Threading.

>>60866115
>muh ahmder lerr
You bring this up in literally every thread. Amdahl's law only applies to a single task being performed. If all you do is crunch numbers in Prime 95 all day, you might have a point. Except you STILL don't, because Prime 95 avoids your "law" by simply running multiple instances of the same algorithm.

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2 core at single threaded applications
4 at multithreaded applications

>>60865878
define faster

Increasing the core count scales better than increasing the core speed for most applications

>>60865878
More cores let you perform more tasks at the same speend. Less cores let you perform fewer tasks, but faster...

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>>60865878
The 2-core is better for most applications, but the 4-core is better at heavily multithreaded applications (8+ threads probably, due to SMT overhead), and is also more power efficient, as voltage scales with clocks, but power scales quadractically with voltage.

>>60865878
A, assuming you are not being bottle necked by cache misses. It would be always be A if you said 2 cores with 2x cache per core

>>60866172
If you're running multiple tasks you're still limited by how fast a single task runs, hence Amdahl's law holds.

>>60865906
Ferrari can move 2 people 200 miles in one hour
for a total of 400 person-miles moved in one hour
a bus can move 60 people 60 miles in one hour
for a total of 3600 person-miles moved in one hour

>>60866727
Indeed, the question is unclear about that. If you only have to move two people and not more then you get the job done faster with a Ferrari, but how likely would that be? Are we moving one, two, three or twenty people? If a bus can move up to 60 people then it's more likely to be the better option, but in a very specific scenario it will be significantly slower.

>>60865878
you must be gnu

>>60865878
4 core has 4 L1 caches

>>60866115
Hitler threading should be a thing

>>60865878
Depends entirely on the task.

>>60865878
Highly dependent on architecture and number of execution threads.
E.g. if you only have 1 or 2 threads, the 2-core will obviously be faster, but if you have 4 identical threads, the 4-core will be faster since context switching is not a free operation. Then there's cache, which complicates things since it comes in several levels with per-core and shared varieties with different sharing algorithms. Etc.

>>60866727
And then you discover that the bus only has 1 narrow door so it takes 20 minutes to load and unload people, and Ferrari has netburst

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>>60867941