Intel Core i3-7320 vs Intel Core i5-7400

Compare Intel 7th Generation Core i3 2 core CPU vs Intel 7th Generation Core i5 4 core processor, specs and benchmark score. Which is the better CPU for gaming?

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Benchmark Score

Overall Score

A combined score of all workloads

34 %
25% slightly better overall score
27 %

Gaming Score

The raw gaming performance with a fast GPU

56 %
14% slightly better gaming score
49 %

Multitasking Score

Performance in workloads using up to 8 cores

27 %
28% slightly better multitasking score
21 %

Heavy Workload Score

Performance in workloads using up to 16 cores

26 %
30% slightly better heavy workload score
20 %

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Number of physical processing units

100% significantly more cores


Number of logical processing units


Clock Speed

Base frequency at which the chip operates

4 GHz
36% slightly higher clock speed
3 GHz


Thermal Design Power: Measure of heat generated by the CPU

51 W
27% slightly lower TDP
65 W

PCIe Lanes

Number of physical connections between the CPU and expansion slots


Memory Channels

Lanes for simultaneous memory access


Supported Memory

Maximum amount of RAM supported by this CPU

64 GiB
64 GiB

L1 Cache

Smallest embedded memory, but the fastest

128 KiB
256 KiB
100% significantly more L1 cache

L2 Cache

Secondary embedded memory, slower than L1 cache

1 MiB
1 MiB
100% significantly more L2 cache

L3 Cache

General memory pool for all cores

4 MiB
6 MiB
49% significantly more L3 cache

Other details


Ranking in the hardwareDB database

529th of 1,327
654th of 1,327


The product line

7th Generation Core i3
7th Generation Core i5

Release date

The official date of release of this chip

February 2017
February 2017

Memory Type

The type of memory used by this chip


Is Unlocked

Can this CPU can be overclocked


Supports ECC memory

Does this CPU support error correcting memory


Core i3-7320 vs Core i5-7400 specs and performance

In our benchmarks, the Core i3-7320 beats the Core i5-7400 in overall performance. Furthermore, our gaming benchmark shows that it also outperforms the Core i5-7400 in all gaming tests too.

In terms of the number of cores of each of these CPUs, the Core i5-7400 has significantly more cores than the Core i3-7320. Indeed, the Core i5-7400 has 4 cores compared to 2 cores found in the Core i3-7320. But they both have the same number of threads. With our hardware info, we find that the Core i3-7320 has a slightly higher clock speed than the Core i5-7400. A Core i3-7320 CPU outputs less heat than a Core i5-7400 CPU because of its slightly lower TDP. This measures the amount of heat they output and can be used to estimate power consumption. In terms of cache, the Core i5-7400 has significantly more L2 cache when compared to the Core i3-7320. The Core i5-7400 also has significantly more L3 cache.

Modern CPUs generally have more logical cores than physical cores, this means that each core is split into multiple virtual cores, improving efficiency for parallel workloads. Indeed, the Core i3-7320 has more threads than cores. Each physical core is split into multiple threads.


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