AMD Ryzen 5 8645HS vs AMD Ryzen 5 8640HS

Compare AMD Ryzen 5 6 core CPU vs AMD Ryzen 5 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

7040 points
9% slightly better overall score
6405 points

Gaming Score

The raw gaming performance with a fast GPU

9593 points
6% slightly better gaming score
9018 points

Multitasking Score

Performance in workloads using up to 8 cores

6234 points
11% slightly better multitasking score
5593 points

Heavy Workload Score

Performance in workloads using up to 16 cores

6029 points
11% slightly better heavy workload score
5403 points

Free CPU Benchmark

Want to compare your processor against the Ryzen 5 8645HS and the Ryzen 5 8640HS? Download our free and quick PC Performance Test.

Other Benchmarks

Blender score

Blender score

Cycles Render (Samples per minute)

156.82 points
2% slightly higher Blender score
153.60 points

Specifications

Cores

Number of physical processing units

6
Identical
6

Threads

Number of logical processing units

12
Identical
12

Clock Speed

Base frequency at which the chip operates

4.30 GHz
22% slightly higher clock speed
3.50 GHz

Turbo Speed

Higher frequency used for heavy workloads

5 GHz
2% slightly higher turbo speed
4.9 GHz

TDP

Thermal Design Power: Measure of heat generated by the CPU

45 W
28 W
60% significantly lower TDP

Memory Channels

Lanes for simultaneous memory access

2
Identical
2

L2 Cache

Secondary embedded memory, slower than L1 cache

6 MiB
Identical
6 MiB

L3 Cache

General memory pool for all cores

16 MiB
Identical
16 MiB

Other details

Rank

Ranking in the hardwareDB database

189th of 1,090
228th of 1,090

Family

The product line

Ryzen 5
Ryzen 5

Memory Type

The type of memory used by this chip

DDR5 (FP7r2)
DDR5 (FP7r2)

Is Unlocked

Can this CPU can be overclocked

No
No

Ryzen 5 8645HS vs Ryzen 5 8640HS comparison

Our benchmark analysis concludes that the Ryzen 5 8645HS performs better than the Ryzen 5 8640HS. Furthermore, our gaming benchmark shows that it also outperforms the Ryzen 5 8640HS in all gaming tests too.

When comparing these CPUs we notice that they have the same number of cores and the same number of threads. These CPUs have different clock speeds. Indeed, the Ryzen 5 8645HS has a slightly higher clock speed compared to the Ryzen 5 8640HS. Also, the Ryzen 5 8645HS has a slightly higher turbo speed. The Ryzen 5 8640HS outputs less heat than Ryzen 5 8645HS thanks to a significantly lower TDP. This measures the amount of heat they output and can be used to estimate power consumption. When comparing cache sizes, these CPUs have an identical amount of L2 cache and 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. Indeed, the Ryzen 5 8645HS has more threads than cores. Each physical core is split into multiple threads.

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