AMD Ryzen 7 8840U vs AMD Ryzen 5 8645HS

Comparative analysis of AMD Ryzen 7 8840U and AMD Ryzen 5 8645HS processors for all known characteristics in the following categories: Essentials, Performance, Memory, Compatibility, Peripherals. Benchmark processor performance analysis: PassMark - Single thread mark, PassMark - CPU mark.

AMD Ryzen 7 8840U

AMD Ryzen 5 8645HS

Differences

Reasons to consider the AMD Ryzen 7 8840U

2 more cores, run more applications at once: 8 vs 6
4 more threads: 16 vs 12
Around 2% higher clock speed: 5.1 GHz vs 5 GHz
Around 33% more L1 cache; more data can be stored in the L1 cache for quick access later
Around 33% more L2 cache; more data can be stored in the L2 cache for quick access later
Around 61% lower typical power consumption: 28 Watt vs 45 Watt
Around 5% better performance in PassMark - CPU mark: 23921 vs 22823

Specifications (specs)
Number of cores	8 vs 6
Number of threads	16 vs 12
Maximum frequency	5.1 GHz vs 5 GHz
L1 cache	64 KB (per core) vs 64 KB (per core)
L2 cache	1 MB (per core) vs 1 MB (per core)
Thermal Design Power (TDP)	28 Watt vs 45 Watt
Benchmarks
PassMark - CPU mark	23921 vs 22823

Reasons to consider the AMD Ryzen 5 8645HS

Benchmarks
PassMark - Single thread mark	3709 vs 3693

Compare benchmarks

CPU 1: AMD Ryzen 7 8840U
CPU 2: AMD Ryzen 5 8645HS

PassMark - Single thread mark

CPU 1

CPU 2

3693

3709

PassMark - CPU mark

CPU 1

CPU 2

23921

22823

Name	AMD Ryzen 7 8840U	AMD Ryzen 5 8645HS
PassMark - Single thread mark	3693	3709
PassMark - CPU mark	23921	22823

Compare specifications (specs)

	AMD Ryzen 7 8840U	AMD Ryzen 5 8645HS
Essentials
Launch date	6 Dec 2023	6 Dec 2023
Place in performance rating	270	274
Performance
Base frequency	3.3 GHz	4.3 GHz
Die size	178 mm²	178 mm²
L1 cache	64 KB (per core)	64 KB (per core)
L2 cache	1 MB (per core)	1 MB (per core)
L3 cache	16 MB (shared)	16 MB (shared)
Manufacturing process technology	4 nm	4 nm
Maximum core temperature	100°C	100°C
Maximum frequency	5.1 GHz	5 GHz
Number of cores	8	6
Number of threads	16	12
Transistor count	25,000 million	25,000 million
Unlocked
Memory
ECC memory support
Supported memory types	DDR5	DDR5
Compatibility
Configurable TDP	15-30 Watt	35-54 Watt
Max number of CPUs in a configuration	1	1
Sockets supported	FP8	FP8
Thermal Design Power (TDP)	28 Watt	45 Watt
Peripherals
PCIe configurations	Gen 4, 20 Lanes, (CPU only)	Gen 4, 20 Lanes, (CPU only)