AMD Ryzen 9 7940H vs AMD Ryzen 9 7945HX

Comparative analysis of AMD Ryzen 9 7940H and AMD Ryzen 9 7945HX 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, 3DMark Fire Strike - Physics Score.

AMD Ryzen 9 7940H

AMD Ryzen 9 7945HX

Differences

Reasons to consider the AMD Ryzen 9 7940H

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 9 7945HX

Processor is unlocked, an unlocked multiplier allows for easier overclocking
8 more cores, run more applications at once: 16 vs 8
16 more threads: 32 vs 16
Around 4% higher clock speed: 5.4 GHz vs 5.2 GHz
2x more L1 cache, more data can be stored in the L1 cache for quick access later
2x more L2 cache, more data can be stored in the L2 cache for quick access later
4x more L3 cache, more data can be stored in the L3 cache for quick access later
Around 1% better performance in PassMark - Single thread mark: 4066 vs 4028
Around 79% better performance in PassMark - CPU mark: 54945 vs 30710

Specifications (specs)
Unlocked	Unlocked vs Locked
Number of cores	16 vs 8
Number of threads	32 vs 16
Maximum frequency	5.4 GHz vs 5.2 GHz
L1 cache	64K (per core) vs 64K (per core)
L2 cache	1MB (per core) vs 1MB (per core)
L3 cache	64MB (shared) vs 16MB (shared)
Benchmarks
PassMark - Single thread mark	4066 vs 4028
PassMark - CPU mark	54945 vs 30710

Compare benchmarks

CPU 1: AMD Ryzen 9 7940H
CPU 2: AMD Ryzen 9 7945HX

PassMark - Single thread mark

CPU 1

CPU 2

4028

4066

PassMark - CPU mark

CPU 1

CPU 2

30710

54945

Name	AMD Ryzen 9 7940H	AMD Ryzen 9 7945HX
PassMark - Single thread mark	4028	4066
PassMark - CPU mark	30710	54945
3DMark Fire Strike - Physics Score		13984

Compare specifications (specs)

	AMD Ryzen 9 7940H	AMD Ryzen 9 7945HX
Essentials
Launch date	Jan 2023	4 Jan 2023
Place in performance rating	121	106
Architecture codename		Zen 4
Performance
Base frequency	4 GHz	2.5 GHz
Die size	178 mm²	2x 71 mm²
L1 cache	64K (per core)	64K (per core)
L2 cache	1MB (per core)	1MB (per core)
L3 cache	16MB (shared)	64MB (shared)
Manufacturing process technology	4 nm	5 nm
Maximum core temperature	100°C	100°C
Maximum frequency	5.2 GHz	5.4 GHz
Number of cores	8	16
Number of threads	16	32
Transistor count	25,000 million	13,140 million
Unlocked
Memory
ECC memory support
Supported memory types	DDR5-5600 MHz, Dual-channel	DDR5-5200 MHz, Dual-channel
Compatibility
Configurable TDP	54 Watt	55-75 W
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)