AMD Ryzen 5 8645HS vs AMD Ryzen 5 8540U

Comparative analysis of AMD Ryzen 5 8645HS and AMD Ryzen 5 8540U 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 5 8645HS

AMD Ryzen 5 8540U

Differences

Reasons to consider the AMD Ryzen 5 8645HS

Around 2% higher clock speed: 5 GHz vs 4.9 GHz
Around 23% better performance in PassMark - CPU mark: 22784 vs 18455

Specifications (specs)
Maximum frequency	5 GHz vs 4.9 GHz
Benchmarks
PassMark - Single thread mark	3666 vs 3657
PassMark - CPU mark	22784 vs 18455

Reasons to consider the AMD Ryzen 5 8540U

Around 61% lower typical power consumption: 28 Watt vs 45 Watt

Thermal Design Power (TDP)	28 Watt vs 45 Watt

Compare benchmarks

CPU 1: AMD Ryzen 5 8645HS
CPU 2: AMD Ryzen 5 8540U

PassMark - Single thread mark

CPU 1

CPU 2

3666

3657

PassMark - CPU mark

CPU 1

CPU 2

22784

18455

Name	AMD Ryzen 5 8645HS	AMD Ryzen 5 8540U
PassMark - Single thread mark	3666	3657
PassMark - CPU mark	22784	18455

Compare specifications (specs)

	AMD Ryzen 5 8645HS	AMD Ryzen 5 8540U
Essentials
Launch date	6 Dec 2023	6 Dec 2023
Place in performance rating	285	325
Performance
Base frequency	4.3 GHz	3.2 GHz
Die size	178 mm²	137 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 GHz	4.9 GHz
Number of cores	6	6
Number of threads	12	12
Transistor count	25,000 million	20,900 million
Unlocked
Memory
ECC memory support
Supported memory types	DDR5	DDR5
Compatibility
Configurable TDP	35-54 Watt	15-30 Watt
Max number of CPUs in a configuration	1	1
Sockets supported	FP8	FP7
Thermal Design Power (TDP)	45 Watt	28 Watt
Peripherals
PCIe configurations	Gen 4, 20 Lanes, (CPU only)	Gen 4, 14 Lanes, (CPU only)