AMD Ryzen 5 8645HS vs AMD Ryzen 5 7640HS

Comparative analysis of AMD Ryzen 5 8645HS and AMD Ryzen 5 7640HS 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 7640HS

Differences

Reasons to consider the AMD Ryzen 5 8645HS

CPU is newer: launch date 11 month(s) later
1048576x more L2 cache, more data can be stored in the L2 cache for quick access later
1048576x more L3 cache, more data can be stored in the L3 cache for quick access later
Around 2% better performance in PassMark - Single thread mark: 3701 vs 3633

Specifications (specs)
Launch date	6 Dec 2023 vs Jan 2023
L2 cache	1 MB (per core) vs 1MB (per core)
L3 cache	16 MB (shared) vs 16MB (shared)
Benchmarks
PassMark - Single thread mark	3701 vs 3633

Reasons to consider the AMD Ryzen 5 7640HS

Around 29% lower typical power consumption: 35 Watt vs 45 Watt
Around 1% better performance in PassMark - CPU mark: 22998 vs 22781

Specifications (specs)
Thermal Design Power (TDP)	35 Watt vs 45 Watt
Benchmarks
PassMark - CPU mark	22998 vs 22781

Compare benchmarks

CPU 1: AMD Ryzen 5 8645HS
CPU 2: AMD Ryzen 5 7640HS

PassMark - Single thread mark

CPU 1

CPU 2

3701

3633

PassMark - CPU mark

CPU 1

CPU 2

22781

22998

Name	AMD Ryzen 5 8645HS	AMD Ryzen 5 7640HS
PassMark - Single thread mark	3701	3633
PassMark - CPU mark	22781	22998

Compare specifications (specs)

	AMD Ryzen 5 8645HS	AMD Ryzen 5 7640HS
Essentials
Launch date	6 Dec 2023	Jan 2023
Place in performance rating	277	296
Performance
Base frequency	4.3 GHz	4.3 GHz
Die size	178 mm²	178 mm²
L1 cache	64 KB (per core)	64K (per core)
L2 cache	1 MB (per core)	1MB (per core)
L3 cache	16 MB (shared)	16MB (shared)
Manufacturing process technology	4 nm	4 nm
Maximum core temperature	100°C	100°C
Maximum frequency	5 GHz	5 GHz
Number of cores	6	6
Number of threads	12	12
Transistor count	25,000 million	25,000 million
Unlocked
Memory
ECC memory support
Supported memory types	DDR5	DDR5-5600 MHz, Dual-channel
Compatibility
Configurable TDP	35-54 Watt	35-54 Watt
Max number of CPUs in a configuration	1	1
Sockets supported	FP8	FP8
Thermal Design Power (TDP)	45 Watt	35 Watt
Peripherals
PCIe configurations	Gen 4, 20 Lanes, (CPU only)	Gen 4, 20 Lanes, (CPU only)