AMD Ryzen 7 4700U vs AMD Ryzen 5 8640HS

Compare AMD Ryzen 7 Mobile 8 core CPU vs AMD Ryzen 5 6 core processor, specs and benchmark score. Which is the better CPU for gaming?

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Specifications
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Benchmark Score

Overall Score

A combined score of all workloads

4283 points

6405 points

49% significantly better overall score

Gaming Score

The raw gaming performance with a fast GPU

6364 points

9018 points

41% slightly better gaming score

Multitasking Score

Performance in workloads using up to 8 cores

3616 points

5593 points

54% significantly better multitasking score

Heavy Workload Score

Performance in workloads using up to 16 cores

3464 points

5403 points

55% significantly better heavy workload score

Free CPU Benchmark

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Other Benchmarks

Blender score

Cycles Render (Samples per minute)

86.75 points

153.60 points

77% significantly higher Blender score

Geekbench 6 (multi) score

Multi threaded benchmark

4938 points

7982 points

61% significantly higher Geekbench 6 (multi) score

Geekbench 6 (single) score

Single threaded benchmark

1356 points

2119 points

56% significantly higher Geekbench 6 (single) score

Specifications

Cores

Number of physical processing units

33% slightly more cores

Threads

Number of logical processing units

49% significantly more threads

Clock Speed

Base frequency at which the chip operates

2 GHz

3.50 GHz

75% significantly higher clock speed

Turbo Speed

Higher frequency used for heavy workloads

4.2 GHz

4.9 GHz

16% slightly higher turbo speed

TDP

Thermal Design Power: Measure of heat generated by the CPU

15 W

86% significantly lower TDP

28 W

L2 Cache

Secondary embedded memory, slower than L1 cache

4 MiB

6 MiB

49% significantly more L2 cache

L3 Cache

General memory pool for all cores

8 MiB

16 MiB

100% significantly more L3 cache

Other details

Rank

Ranking in the hardwareDB database

411th of 1,089

227th of 1,089

Family

The product line

Ryzen 7 Mobile

Ryzen 5

Release date

The official date of release of this chip

2020 June

Memory Type

The type of memory used by this chip

DDR4-3200

DDR5 (FP7r2)

Is Unlocked

Can this CPU can be overclocked

Ryzen 7 4700U vs Ryzen 5 8640HS benchmarks

Our benchmark analysis concludes that the Ryzen 5 8640HS performs better than the Ryzen 7 4700U. Furthermore, our gaming benchmark shows that it also outperforms the Ryzen 7 4700U in all gaming tests too.

In terms of the number of cores of each of these CPUs, the Ryzen 7 4700U has slightly more cores than the Ryzen 5 8640HS. Indeed, the Ryzen 7 4700U has 8 cores compared to 6 cores found in the Ryzen 5 8640HS. Despite this, the Ryzen 5 8640HS has more threads than the Ryzen 7 4700U. Our comparison shows that the Ryzen 5 8640HS has a significantly higher clock speed compared to the Ryzen 7 4700U. Also, the Ryzen 5 8640HS has a slightly higher turbo speed. A Ryzen 7 4700U CPU outputs less heat than a Ryzen 5 8640HS CPU because of its significantly lower TDP. This measures the amount of heat they output and can be used to estimate power consumption. In terms of cache, the Ryzen 5 8640HS has significantly more L2 cache when compared to the Ryzen 7 4700U. The Ryzen 5 8640HS also has significantly more L3 cache.

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. For instance, the Ryzen 7 4700U has the same number of threads as cores. This means the the CPU does not support hyperthreading.