Intel Core i5-7400 vs Intel Core Ultra 7 155U

Compare Intel 7th Generation Core i5 4 core CPU vs Intel 12 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

2237 points
4819 points
115% significantly better overall score

Gaming Score

The raw gaming performance with a fast GPU

4164 points
7087 points
70% significantly better gaming score

Multitasking Score

Performance in workloads using up to 8 cores

1701 points
4161 points
144% significantly better multitasking score

Heavy Workload Score

Performance in workloads using up to 16 cores

1632 points
4014 points
145% significantly better heavy workload score

Free CPU Benchmark

Want to compare your processor against the Core i5-7400 and the Core Ultra 7 155U? Download our free and quick PC Performance Test.

Other Benchmarks

Blender score

Blender score

Cycles Render (Samples per minute)

43.28 points
94.95 points
119% significantly higher Blender score

Specifications

Cores

Number of physical processing units

4
12
200% significantly more cores

Threads

Number of logical processing units

4
14
250% significantly more threads

Clock Speed

Base frequency at which the chip operates

3 GHz
42% much higher clock speed
2.1 GHz

Turbo Speed

Higher frequency used for heavy workloads

3.5 GHz
4.8 GHz
37% slightly higher turbo speed

PCIe Lanes

Number of physical connections between the CPU and expansion slots

16
20
25% slightly more pcie lanes

Memory Channels

Lanes for simultaneous memory access

2
Identical
2

Supported Memory

Maximum amount of RAM supported by this CPU

64 GiB
96 GiB
49% significantly more supported memory

L2 Cache

Secondary embedded memory, slower than L1 cache

1 MiB
10 MiB
900% significantly more L2 cache

L3 Cache

General memory pool for all cores

6 MiB
12 MiB
100% significantly more L3 cache

Other details

Rank

Ranking in the hardwareDB database

675th of 1,089
364th of 1,089

Family

The product line

7th Generation Core i5
Core Ultra (Series 1)

Release date

The official date of release of this chip

2017 February
2023 November

Memory Type

The type of memory used by this chip

DDR4-2133
DDR5-7467

Is Unlocked

Can this CPU can be overclocked

No
-

Supports ECC memory

Does this CPU support error correcting memory

No
No

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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