Ryzen 9 5900H vs Ryzen 5 3450U

Place in the ranking	1362	578
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Laptop
Series	AMD Picasso (Ryzen 3000 APU)	AMD Cezanne (Zen 3, Ryzen 5000)
Power efficiency	26.75	27.21
Architecture codename	Picasso-U (Zen+) (2019−2020)	Cezanne U (Zen 3) (2021−2022)
Release date	1 May 2020 (4 years ago)	7 January 2021 (3 years ago)

Detailed specifications

Ryzen 5 3450U and Ryzen 9 5900H basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.

Physical cores	4 (Quad-Core)	8 (Octa-Core)
Threads	8	16
Base clock speed	2.1 GHz	3.3 GHz
Boost clock speed	3.5 GHz	4.6 GHz
L1 cache	384 KB	512 KB
L2 cache	2 MB	4 MB
L3 cache	4 MB	16 MB
Chip lithography	12 nm	7 nm
Maximum core temperature	105 °C	no data
Number of transistors	4500 Million	no data
64 bit support	+	+
Windows 11 compatibility	+	-

Compatibility

Information on Ryzen 5 3450U and Ryzen 9 5900H compatibility with other computer components: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.

Socket	FP5	FP6
Power consumption (TDP)	15 Watt	45 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Ryzen 5 3450U and Ryzen 9 5900H. You'll probably need this information if you require some particular technology.

Instruction set extensions	MMX, SSE, SSE2, SSE3, SSSE3, SSE4A, SSE4.1, SSE4.2, AVX, AVX2, BMI2, ABM, FMA, ADX, SMEP, SMAP, SMT, CPB, AES-NI, RDRAND, RDSEED, SHA, SME	XFR, FMA3, SSE 4.2, AVX2, SMT
AES-NI	+	-
FMA	+	-
AVX	+	-

Memory specs

Types, maximum amount and channel quantity of RAM supported by Ryzen 5 3450U and Ryzen 9 5900H. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types

DDR4

no data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card
Compare

AMD Radeon RX Vega 8 (Ryzen 2000/3000)

AMD Radeon RX Vega 8 (Ryzen 4000/5000)

Synthetic benchmark performance

Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.

Combined synthetic benchmark score

This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

Ryzen 5 3450U 4.41

Ryzen 9 5900H 13.43
+205%

Passmark

Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.

Ryzen 5 3450U 6742

Ryzen 9 5900H 20557
+205%

Gaming performance

Pros & cons summary

Performance score	4.41	13.43
Integrated graphics card	4.50	9.02
Recency	1 May 2020	7 January 2021
Physical cores	4	8
Threads	8	16
Chip lithography	12 nm	7 nm
Power consumption (TDP)	15 Watt	45 Watt

Ryzen 5 3450U has 200% lower power consumption.

Ryzen 9 5900H, on the other hand, has a 204.5% higher aggregate performance score, 100.4% faster integrated GPU, an age advantage of 8 months, 100% more physical cores and 100% more threads, and a 71.4% more advanced lithography process.

The Ryzen 9 5900H is our recommended choice as it beats the Ryzen 5 3450U in performance tests.

Should you still have questions on choice between Ryzen 5 3450U and Ryzen 9 5900H, ask them in Comments section, and we shall answer.