Difference one, hyperthreading
Hyper-threading means that each processor core can handle two threads instead of one, with better performance when running Windows systems and some compatible software. Generally speaking, the i5 processor does not have the hyper-threading function, while the i7 basically supports it, and has better effects when performing photo and video editing operations. This is something users need to consider.
Difference 2, clock frequency
The clock frequency, which is the processor's dominant frequency, is a major part of the processor's performance. Since the Core i5 and i7 are built on the same architecture, the higher the clock frequency, the better the performance. However, it should be noted that the quad-core processor's main frequency is sometimes lower than the dual-core, which means that the high-frequency dual-core processor single-core performance may be stronger.
In addition, Intel also equipped the Core i5 and i7 with the "Turkey" function, which can convert some idle cores into the main frequency to improve performance, and considering that the general application only uses single core or dual core execution, so the purchase point is It is balanced frequency, core and core frequency.
Difference three, cache
The secondary cache of the i7 processor is usually 2MB larger than the i5, which is the main difference. A larger cache can call more RAM to increase performance and reduce power consumption, so if you have a large RAM requirement, i7 is a better choice.
Difference 4, power consumption and price
There is no doubt that the power consumption of i7 is greater than i5, which is also a part to consider. If you choose an 8-core i7 processor with a strong graphics card, you need to consider a more costly water cooling device.
As for the cost, it is clear that the price of the Core i5 processor is lower, the desktop version is about $1,000, and the i7 is $800 or more. As for the notebook, the model with the i5-4200 is about 3200 yuan, and the i7 with the same Haswell architecture is about 4200 yuan, and the difference is at least 1,000 yuan.