AMD Ryzen 7 7840U vs AMD Ryzen 9 8945HX

Compare AMD Ryzen 7 8 core CPU vs AMD Ryzen 8000 Series 16 core processor, specs and benchmark score. Which is the better CPU for gaming?

CPU Comparison

Quickly search and compare processors

Benchmark Score

Overall Score

A combined score of all workloads

8215 points
8535 points
3% slightly better overall score

Gaming Score

The raw gaming performance with a fast GPU

10758 points
32% slightly better gaming score
8107 points

Multitasking Score

Performance in workloads using up to 8 cores

7390 points
8825 points
19% slightly better multitasking score

Heavy Workload Score

Performance in workloads using up to 16 cores

7189 points
9118 points
26% slightly better heavy workload score

Free CPU Benchmark

Want to compare your processor against the Ryzen 7 7840U and the Ryzen 9 8945HX? Download our free and quick PC Performance Test.

Other Benchmarks

Blender score

Blender score

Cycles Render (Samples per minute)

195.47 points
468.88 points
139% significantly higher Blender score

Specifications

Cores

Number of physical processing units

8
16
100% significantly more cores

Threads

Number of logical processing units

16
32
100% significantly more threads

Clock Speed

Base frequency at which the chip operates

3.30 GHz
31% slightly higher clock speed
2.50 GHz

Turbo Speed

Higher frequency used for heavy workloads

5.1 GHz
5.4 GHz
5% slightly higher turbo speed

TDP

Thermal Design Power: Measure of heat generated by the CPU

28 W
96% significantly lower TDP
55 W

Memory Channels

Lanes for simultaneous memory access

2
Identical
2

L2 Cache

Secondary embedded memory, slower than L1 cache

8 MiB
16 MiB
100% significantly more L2 cache

L3 Cache

General memory pool for all cores

16 MiB
64 MiB
300% significantly more L3 cache

Other details

Rank

Ranking in the hardwareDB database

139th of 1,089
124th of 1,089

Family

The product line

Ryzen 7
Ryzen 8000 Series

Release date

The official date of release of this chip

2023 May
2025 April

Memory Type

The type of memory used by this chip

DDR5 (FP7r2)
DDR5

Is Unlocked

Can this CPU can be overclocked

No
Yes

Ryzen 7 7840U vs Ryzen 9 8945HX benchmarks

According to the hardwareDB Benchmark tool, the Ryzen 9 8945HX is faster than the Ryzen 7 7840U. Despite this, the Ryzen 7 7840U has the advantage in our gaming benchmark.

When comparing core counts for these CPUs, we notice that the Ryzen 9 8945HX has significantly more cores with 16 cores compared to the Ryzen 7 7840U that has 8 cores. It also has more threads than the Ryzen 7 7840U. With our hardware info, we find that the Ryzen 7 7840U has a slightly higher clock speed than the Ryzen 9 8945HX. Despite this, the Ryzen 9 8945HX has a slightly higher turbo speed. A Ryzen 7 7840U CPU outputs less heat than a Ryzen 9 8945HX CPU because of its significantly lower TDP. This measures the amount of heat they output and can be used to estimate power consumption. The cache sizes of these CPUs are different. Indeed, the Ryzen 9 8945HX has significantly more L2 cache than the Ryzen 7 7840U. The Ryzen 9 8945HX 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. Indeed, the Ryzen 7 7840U has more threads than cores. Each physical core is split into multiple threads.

Comments

No comments yet! Be the first to leave a comment using the form below.

Keep comments on topic and be polite. Comments are subject to moderation before they are published.

Popular CPU Comparisons