Intel Core i5-9400 vs Intel Core i7-7700

The Intel Core i7-7700 is based on the Kaby Lake S architecture and was manufactured using the 14 nm process.

It features four cores and eight threads, as well as Intel HD Graphics 630. Its maximum memory bandwidth is 38 GB/s, and it has 8 MB of L3 cache. In single-core tasks, its performance is comparable to the Intel Core i5-9400.

For multi-core workloads, it shows higher performance in one benchmark (Cinebench R23). The Intel Core i5-9400, manufactured using the 14 nm process based on the Coffee Lake S Refresh architecture, offers six physical cores and six threads. It integrates Intel UHD Graphics 630. Its maximum memory bandwidth of 43 GB/s surpasses the Intel Core i7-7700 by over 10%, and it has 9 MB of L3 cache.

In single-core benchmarks (Cinebench R23), it shows advantages, and in another multi-core benchmark (Geekbench 6), it exhibits significantly higher performance. Both CPUs support PCIe 3.0 and are designed for the mainstream desktop market, with typical power consumption for their class. For gaming scenarios, the Intel Core i5-9400 generally offers better performance due to its higher number of physical cores and newer architecture.

For tasks that benefit from Hyper-Threading, the Intel Core i7-7700 can be advantageous, while the Intel Core i5-9400 generally provides a more favorable price-performance ratio for a broader range of multi-core applications and gaming.