AMD Ryzen 9 7945HX3D vs AMD Ryzen 9 7940H

Comparative analysis of AMD Ryzen 9 7945HX3D and AMD Ryzen 9 7940H 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 9 7945HX3D

AMD Ryzen 9 7940H

Differences

Reasons to consider the AMD Ryzen 9 7945HX3D

CPU is newer: launch date 6 month(s) later
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
8x more L3 cache, more data can be stored in the L3 cache for quick access later
Around 3% better performance in PassMark - Single thread mark: 4165 vs 4028
Around 92% better performance in PassMark - CPU mark: 58829 vs 30710

Specifications (specs)
Launch date	27 Jul 2023 vs Jan 2023
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	128MB (shared) vs 16MB (shared)
Benchmarks
PassMark - Single thread mark	4165 vs 4028
PassMark - CPU mark	58829 vs 30710

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

Compare benchmarks

CPU 1: AMD Ryzen 9 7945HX3D
CPU 2: AMD Ryzen 9 7940H

PassMark - Single thread mark

CPU 1

CPU 2

4165

4028

PassMark - CPU mark

CPU 1

CPU 2

58829

30710

Name	AMD Ryzen 9 7945HX3D	AMD Ryzen 9 7940H
PassMark - Single thread mark	4165	4028
PassMark - CPU mark	58829	30710

Compare specifications (specs)

	AMD Ryzen 9 7945HX3D	AMD Ryzen 9 7940H
Essentials
Launch date	27 Jul 2023	Jan 2023
Place in performance rating	34	120
Performance
Base frequency	2.3 GHz	4 GHz
Die size	2x 71 mm²	178 mm²
L1 cache	64K (per core)	64K (per core)
L2 cache	1MB (per core)	1MB (per core)
L3 cache	128MB (shared)	16MB (shared)
Manufacturing process technology	5 nm	4 nm
Maximum core temperature	100°C	100°C
Maximum frequency	5.4 GHz	5.2 GHz
Number of cores	16	8
Number of threads	32	16
Transistor count	17,840 million	25,000 million
Unlocked
Memory
ECC memory support
Supported memory types	DDR5-5200 MHz, Dual-channel	DDR5-5600 MHz, Dual-channel
Compatibility
Max number of CPUs in a configuration	1	1
Sockets supported	FL1	FP8
Thermal Design Power (TDP)	55 Watt	35 Watt
Configurable TDP		54 Watt
Peripherals
PCIe configurations	Gen 5, 28 Lanes, (CPU only)	Gen 4, 20 Lanes, (CPU only)