4 cores 1.6 ghz vs 2 cores 2.5 ghz

[SY3]

i5-8250U vs i5-7200U
For programing in c++, java and 10 pages in chrome.

 

[SkyNetRising]

i5-7200U - is 2cores/4threads, base clock 2.5Ghz, turbo boost 3.1Ghz.
i5-8250U - is 4cores/8threads, base clock 1.6Ghz, turbo boost 3.4Ghz.

Obviously i5-8250U is better in every aspect.

 

[derekullo]

Both have a TDP of 25 watts meaning that if both are pushed to their maximum the processor frequency has the potential of dropping to

i5-7200U
Processor Base Frequency = 2.50 GHz
https://ark.intel.com/products/95443/Intel-Core-i5-7200U-Processor-3M-Cache-up-to-3_10-GHz

i5-8250U
Processor Base Frequency = 1.60 GHz
https://ark.intel.com/products/124967/Intel-Core-i5-8250U-Processor-6M-Cache-up-to-3_40-GHz

Intel can't pull speed out of a hat and so to fit in those extra cores/threads into the i5-8250U they had to drastically low the processor base frequency.


The worst case scenario would be if you used both processors at 100% usage giving us the scenario

8 threads at 1.60GHz versus 4 threads at 2.50 GHz

Doing some quick napkin math,
8 threads x 1.6Ghz = 12.8 hypothetical GHz
4 threads x 2.5Ghz = 10 hypothetical Ghz

If the load only sufficiently uses 4 threads at 100% the decision becomes a toss up.

For example lets say the i5-8250U only had to use 4 of its cores for the workload and with that combination it was able to hit 75% of its maximum frequency versus the i5-7200u running full blast as in the last example,

(8 threads x 0.5) x (3.4 x 0.75) = 10.2 hypothetical GHz
4 threads x 2.5 = 10.0 hypothetical GHz


In both cases the i5-8250U has between a 2% and a 28% lead over the i5-7200U making the i5-8250U the clear winner.

 

[SY3]

i5-7200U - is 2cores/4threads, base clock 2.5Ghz, turbo boost 3.1Ghz.
i5-8250U - is 4cores/8threads, base clock 1.6Ghz, turbo boost 3.4Ghz.

Obviously i5-8250U is better in every aspect.

Both have a TDP of 25 watts meaning that if both are pushed to their maximum the processor frequency has the potential of dropping to

i5-7200U
Processor Base Frequency = 2.50 GHz
https://ark.intel.com/products/95443/Intel-Core-i5-7200U-Processor-3M-Cache-up-to-3_10-GHz

i5-8250U
Processor Base Frequency = 1.60 GHz
https://ark.intel.com/products/124967/Intel-Core-i5-8250U-Processor-6M-Cache-up-to-3_40-GHz

Intel can't pull speed out of a hat and so to fit in those extra cores/threads into the i5-8250U they had to drastically low the processor base frequency.


The worst case scenario would be if you used both processors at 100% usage giving us the scenario

8 threads at 1.60GHz versus 4 threads at 2.50 GHz

For example: Devc++, 3 pages of ofiice word, chrome 6 pages. In other words i do a lot of similar multitasking (usualy more than that) and i don't want to freeze or to crush.

 

[derekullo]

"Edited the last post with some example scenarios"