Intel Core i3-8100 vs Intel Core i5-9400

The Intel Core i3-8100, introduced in the fourth quarter of 2017, was aimed at entry-level users for basic computing tasks.

The Intel Core i5-9400, released in the first quarter of 2019, targeted the mid-range segment, offering improved features for multitasking and light creative work.

Both CPUs are manufactured by Intel using a 14nm fabrication process and utilize PCIe Version 3.0. The Intel Core i3-8100 is based on the Coffee Lake S architecture and features 4 cores and 4 threads, as well as 6 MB of Level 3 Cache. Its maximum memory bandwidth is 38 GB/s. The Intel Core i5-9400, a Coffee Lake S Refresh architecture, offers 6 cores and 6 threads with 9 MB of Level 3 Cache and a maximum memory bandwidth of 43 GB/s.

The Intel Core i5-9400 shows significantly higher multi-core performance, making it better suited for parallel workloads. The single-core performance of the Intel Core i5-9400 is also measurably better. These differences are mainly due to the higher core count and larger cache of the Intel Core i5-9400.

In the gaming sector, the Intel Core i5-9400 offers superior performance thanks to its additional cores and higher clock speeds, especially in games that benefit from multiple threads. Both processors integrate an Intel UHD Graphics 630, which is sufficient for basic graphics output but requires a dedicated graphics card for modern games.

Both processors have a Thermal Design Power (TDP) of 65W. This indicates comparable power consumption under load and requires similar cooling solutions, regarding operational energy efficiency. The Intel Core i3-8100 was positioned as a cost-effective option for budget-conscious buyers.

Despite a higher purchase price, the Intel Core i5-9400 offered a better price-performance ratio for more demanding applications and multitasking scenarios. The Intel Core i3-8100 is ideal for basic office tasks and media consumption. For more demanding applications, multitasking, and a better gaming experience, the Intel Core i5-9400 is the superior choice.