22nm vs 14nm Lithography does small number mean better processor?

[danial9]

i am buying a laptop for my uni,

acer e5 571 series is on sale in my place but there is 100 euro difference between 2 laptops one has 

 

i3 4005 22nm   http://ark.intel.com/products/75105/Intel-Core-i3-4005U-Processor-3M-Cache-1_70-GHz

 

and oher has 

 

i5 5200u       http://ark.intel.com/products/85212/Intel-Core-i5-5200U-Processor-3M-Cache-up-to-2_70-GHz

 

dont know if 100 euro is worth the perofrmance that i will get or benifits of the i5 compare to i3.

 

is there a big difference in tern of battery usage , heat output and performance wise.          

and also one say tdp 7.5w and one is 15 dont know if higher is better?

 

i am mainly going to use it for my uni work , i.e 10 web tabs , ms office , ces edupak (engineering software) at the same time.

 

if there is  enough benifits of buying i5 comapre to i3 i will happply pay extra 100 euro as i will have use it 3 to 4 years of uni.

 

soory for bad english.

[SpaceJellyDonut]

From 22nm to 14nm means that the transistors on the cpu die are closer together, this is better for power consumption and heat ouput. On mobile cpu's this is not gonna make a huge difference. The Core i5 cpu however does have Intel Turbo boost technology which means that it can boost the clock speed of the processor when needed. And also the i5 has a newer and better iGPU (Onboard graphics) which is going to last you a little longer performance wise.

 

So basically it depends on how much 100 euros means to you, if it were me and i knew i'm not going to be buying a new laptop anytime soon then i would rather spend a little more for something that's going to last me a little longer. But that's entirely up to you

[danial9]

From 22nm to 14nm means that the transistors on the cpu die are closer together, this is better for power consumption and heat ouput. On mobile cpu's this is not gonna make a huge difference. The Core i5 cpu however does have Intel Turbo boost technology which means that it can boost the clock speed of the processor when needed. And also the i5 has a newer and better iGPU (Onboard graphics) which is going to last you a little longer performance wise.

 

So basically it depends on how much 100 euros means to you, if it were me and i knew i'm not going to be buying a new laptop anytime soon then i would rather spend a little more for something that's going to last me a little longer. But that's entirely up to you

they both have 820m gpu 

thanks for your opnion i am also thinking of getting i5.

[harrynowl]

@danial9

 

The i5 would be significantly faster thanks to turbo boost, 14nm is pretty good at reaching high boost speeds consistently.

 

The CPU is also smaller (thanks to increased transistor density) so it will marginally reduce power consumption/heat as stated above.