Sign in with
Sign up | Sign in
Your question
Solved

What is better?

Last response: in CPUs
Share
June 19, 2012 12:43:14 AM

I have noticed that some intel i7 processors have lets say a 2.6 gigahertz frequency, while an i5 processor may have 3.1 gigahertz with the same amount of cores. Why would the i7 be better?

More about : question

June 19, 2012 12:45:49 AM

Because of Hyper Threading, a 4 core i7 can run 8 threads. The i5 does not use HT, so runs only 4.
m
0
l
a c 328 à CPUs
June 19, 2012 3:05:32 AM

What would be your main use of the machine? Desktop or laptop?
m
0
l
Related resources
a b à CPUs
June 19, 2012 3:17:28 AM

pizza5647 said:
I have noticed that some intel i7 processors have lets say a 2.6 gigahertz frequency, while an i5 processor may have 3.1 gigahertz with the same amount of cores. Why would the i7 be better?


For most people, the i5 wud probably be faster !!! Only a few software, like rendering and video encoding etc, can make use of all 8 threads of the 2.6GHz i7, to get a slight edge in performance over the 3.1GHz i5 :) 

At the end of the day, i5 or i7 are just branding schemes, compare the i3-560 with the i5-650 for example. Basically the same chip sold for $40 more!!

PS:- My female friend got a expensive laptop with a 1.67GHz i7 (45nm, 45W). All she ever does is watch movies, listen to music and browse the web!! :D 
She cud have easily taken a 2.34GHz i3 (32nm, 35W), even with 2 cores less, that 50% clock speed advantage wud have definitely been of more use to her :)  probably even given her longer battery life :)  So just buy whatever suits ur needs, and don;t bother with the branding:) 
m
0
l
June 19, 2012 3:43:04 AM

If you would do jobs that are highly-threaded then the i7 is better due to hyper-threading. However, for most common jobs, the higher clocked i5 would better suit your needs.
m
0
l

Best solution

a c 81 à CPUs
June 19, 2012 4:43:28 AM

pizza5647 said:
I have noticed that some intel i7 processors have lets say a 2.6 gigahertz frequency, while an i5 processor may have 3.1 gigahertz with the same amount of cores. Why would the i7 be better?

because of intel's product segmenting. most i7 and all i5 cpus are both quadcore cpus. but i7 has a few 'advantages' against i5 cpus. i7 cpus usually get the best treatments - hyperthreading, bigger cache, higher base clockspeeds. in ivy bridge cpus' cases, all i7 desktop cpus got full igpu - hd4000 where most i5 cpus except 3570k got hd2500 igpu. mobile i7 cpus get quad core cpus while all mobile i5 cpus are dual core cpus with hypterthreading and turbo boost. i7 also represents intel's enthusiast/highest end cpus - like core i7 980x (6 core, ht), core i7 3820, 3930k (6 core, ht), 3960x (6 core, ht). those can cost as much as $1000+.
i7's actual advantage is application and task specific. if you're playing games, i7 cpus will offer as much performance as cheaper i5 cpus, the improvement might be negligible and usually not worth the extra money. i7 cpus shine in multithreaded workloads like video editing, transcoding, 3d rendering, multithreaded encryption, file compression. those workloads also benefit from larger cache and higher clock rate i7 cpus have.
Share
July 3, 2012 9:12:45 PM

Best answer selected by pizza5647.
m
0
l
!