AMD Ryzen 7 7840H vs AMD Ryzen 7 7745HX

Comparative analysis of AMD Ryzen 7 7840H and AMD Ryzen 7 7745HX 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 7840H

AMD Ryzen 7 7745HX

Differences

Reasons to consider the AMD Ryzen 7 7840H

A newer manufacturing process allows for a more powerful, yet cooler running processor: 4 nm vs 5 nm
Around 57% lower typical power consumption: 35 Watt vs 55 Watt

Manufacturing process technology	4 nm vs 5 nm
Thermal Design Power (TDP)	35 Watt vs 55 Watt

Reasons to consider the AMD Ryzen 7 7745HX

Processor is unlocked, an unlocked multiplier allows for easier overclocking
2x more L3 cache, more data can be stored in the L3 cache for quick access later
Around 6% better performance in PassMark - Single thread mark: 3959 vs 3735
Around 15% better performance in PassMark - CPU mark: 32838 vs 28469

Specifications (specs)
Unlocked	Unlocked vs Locked
L3 cache	32MB (shared) vs 16MB (shared)
Benchmarks
PassMark - Single thread mark	3959 vs 3735
PassMark - CPU mark	32838 vs 28469

Compare benchmarks

CPU 1: AMD Ryzen 7 7840H
CPU 2: AMD Ryzen 7 7745HX

PassMark - Single thread mark

CPU 1

CPU 2

3735

3959

PassMark - CPU mark

CPU 1

CPU 2

28469

32838

Name	AMD Ryzen 7 7840H	AMD Ryzen 7 7745HX
PassMark - Single thread mark	3735	3959
PassMark - CPU mark	28469	32838

Compare specifications (specs)

	AMD Ryzen 7 7840H	AMD Ryzen 7 7745HX
Essentials
Launch date	Jan 2023	4 Jan 2023
Place in performance rating	184	121
Architecture codename		Zen 4 (Dragon Range)
Performance
Base frequency	3.8 GHz	3.6 GHz
Die size	178 mm²	71 mm²
L1 cache	64K (per core)	64K (per core)
L2 cache	1MB (per core)	1MB (per core)
L3 cache	16MB (shared)	32MB (shared)
Manufacturing process technology	4 nm	5 nm
Maximum core temperature	100°C	100°C
Maximum frequency	5.1 GHz	5.1 GHz
Number of cores	8	8
Number of threads	16	16
Transistor count	25,000 million	6,570 million
Unlocked
Memory
ECC memory support
Supported memory types	DDR5-5600 MHz, Dual-channel	DDR5-5200 MHz, Dual-channel
Compatibility
Configurable TDP	35-54 Watt	45-75 Watt
Max number of CPUs in a configuration	1	1
Sockets supported	FP8	FL1
Thermal Design Power (TDP)	35 Watt	55 Watt
Peripherals
PCIe configurations	Gen 4, 20 Lanes, (CPU only)	Gen 5, 28 Lanes, (CPU only)