Intel Core i5-10505 vs Intel Core i5-8400

Compare Intel 10th Generation Core i5 6 core CPU vs Intel 8th Generation Core i5 6 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

50 %
35% slightly better overall score
37 %

Gaming Score

The raw gaming performance with a fast GPU

70 %
16% slightly better gaming score
60 %

Multitasking Score

Performance in workloads using up to 8 cores

43 %
43% significantly better multitasking score
30 %

Heavy Workload Score

Performance in workloads using up to 16 cores

41 %
41% slightly better heavy workload score
29 %

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Number of physical processing units



Number of logical processing units

100% significantly more threads

Clock Speed

Base frequency at which the chip operates

3.2 GHz
14% slightly higher clock speed
2.8 GHz

Turbo Speed

Higher frequency used for heavy workloads

4.6 GHz
15% slightly higher turbo speed
4 GHz


Thermal Design Power: Measure of heat generated by the CPU

65 W
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

128 GiB
128 GiB

Other details


Ranking in the hardwareDB database

217th of 1,239
316th of 1,239


The product line

10th Generation Core i5
8th Generation Core i5

Release date

The official date of release of this chip

February 2021
November 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 i5-10505 vs Core i5-8400 benchmarks

In our benchmarks, the Core i5-10505 beats the Core i5-8400 in overall performance. Furthermore, our gaming benchmark shows that it also outperforms the Core i5-8400 in all gaming tests too.

Our spec comparison shows that they have an identical amount of cores but the Core i5-10505 has more threads. These CPUs have different clock speeds. Indeed, the Core i5-10505 has a slightly higher clock speed compared to the Core i5-8400. Also, the Core i5-10505 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.

Most CPUs have more threads than cores. This technology, colloquially called hyperthreading, improves performance by splitting a core into multiple virtual ones. This provides more efficient utilisation of a core. Indeed, the Core i5-10505 has more threads than cores. Each physical core is split into multiple threads.


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