Core i5-7400 vs Core Ultra 7 155U specs and performance
Our benchmark analysis concludes that the Core Ultra 7 155U performs better than the Core i5-7400. Furthermore, our gaming benchmark shows that it also outperforms the Core i5-7400 in all gaming tests too.
When comparing core counts for these CPUs, we notice that the Core Ultra 7 155U has significantly more cores with 12 cores compared to the Core i5-7400 that has 4 cores. It also has more threads than the Core i5-7400. These CPUs have different clock speeds. Indeed, the Core i5-7400 has a much higher clock speed compared to the Core Ultra 7 155U. In terms of cache, the Core Ultra 7 155U has significantly more L2 cache when compared to the Core i5-7400. The Core Ultra 7 155U also has significantly 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. For instance, the Core i5-7400 has the same number of threads as cores. This means the the CPU does not support hyperthreading.
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