AMD Ryzen 7 7840U vs AMD Ryzen 5 7640U

Comparative analysis of AMD Ryzen 7 7840U and AMD Ryzen 5 7640U 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 7840U

AMD Ryzen 5 7640U

Differences

Reasons to consider the AMD Ryzen 7 7840U

CPU is newer: launch date 3 month(s) later
2 more cores, run more applications at once: 8 vs 6
4 more threads: 16 vs 12
Around 4% higher clock speed: 5.1 GHz vs 4.9 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 1% better performance in PassMark - Single thread mark: 3592 vs 3547
Around 16% better performance in PassMark - CPU mark: 24995 vs 21622

Specifications (specs)
Launch date	May 2023 vs Jan 2023
Number of cores	8 vs 6
Number of threads	16 vs 12
Maximum frequency	5.1 GHz vs 4.9 GHz
L1 cache	64K (per core) vs 64K (per core)
L2 cache	1MB (per core) vs 1MB (per core)
Benchmarks
PassMark - Single thread mark	3592 vs 3547
PassMark - CPU mark	24995 vs 21622

Reasons to consider the AMD Ryzen 5 7640U

Around 87% lower typical power consumption: 15 Watt vs 28 Watt

Thermal Design Power (TDP)	15 Watt vs 28 Watt

Compare benchmarks

CPU 1: AMD Ryzen 7 7840U
CPU 2: AMD Ryzen 5 7640U

PassMark - Single thread mark

CPU 1

CPU 2

3592

3547

PassMark - CPU mark

CPU 1

CPU 2

24995

21622

Name	AMD Ryzen 7 7840U	AMD Ryzen 5 7640U
PassMark - Single thread mark	3592	3547
PassMark - CPU mark	24995	21622

Compare specifications (specs)

	AMD Ryzen 7 7840U	AMD Ryzen 5 7640U
Essentials
Launch date	May 2023	Jan 2023
Place in performance rating	235	277
Performance
Base frequency	3.3 GHz	3.5 GHz
Die size	178 mm²	178 mm²
L1 cache	64K (per core)	64K (per core)
L2 cache	1MB (per core)	1MB (per core)
L3 cache	16MB (shared)	16MB (shared)
Manufacturing process technology	4 nm	4 nm
Maximum core temperature	100°C	100°C
Maximum frequency	5.1 GHz	4.9 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	DDR5-5600 MHz, Dual-channel	DDR5-5600 MHz, Dual-channel
Compatibility
Configurable TDP	15-30 Watt	28 Watt
Max number of CPUs in a configuration	1	1
Sockets supported	FP8	FP8
Thermal Design Power (TDP)	28 Watt	15 Watt
Peripherals
PCIe configurations	Gen 4, 20 Lanes, (CPU only)	Gen 4, 20 Lanes, (CPU only)