Core i3-10300 vs Core i5-8400 specs and performance
In our benchmarks, the Core i3-10300 beats the Core i5-8400 in overall performance. Despite this, the Core i5-8400 has the advantage in our gaming benchmark.
When comparing core counts for these CPUs, we notice that the Core i5-8400 has significantly more cores with 6 cores compared to the Core i3-10300 that has 4 cores. Despite this, the Core i3-10300 has more threads than the Core i5-8400. These CPUs have different clock speeds. Indeed, the Core i3-10300 has a slightly higher clock speed compared to the Core i5-8400. Also, the Core i3-10300 has a slightly higher turbo speed. Both these chips have an identical TDP (Thermal Design Power). This measures the amount of heat they output and can be used to estimate power consumption. The cache sizes of these CPUs are different. Indeed, the Core i5-8400 has significantly more L2 cache than the Core i3-10300. The Core i5-8400 also has slightly more L3 cache.
The more cores a CPU has, the better the overall performance will be in parallel workloads such as multitasking. Many CPUs have more threads than cores, this means that each physical core is split into multiple logical cores, making them more efficient. Indeed, the Core i3-10300 has more threads than cores. Each physical core is split into multiple threads.
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