Ryzen 5 3550H vs Core 2 Quad Q8400

Place in the ranking	2268	1234
Place by popularity	not in top-100	80
Market segment	Desktop processor	Laptop
Series	no data	AMD Ryzen 5
Power efficiency	1.30	13.22
Architecture codename	Yorkfield (2007−2009)	Picasso-U (Zen+) (2019−2020)
Release date	19 April 2009 (15 years ago)	6 January 2019 (5 years ago)

Detailed specifications

Core 2 Quad Q8400 and Ryzen 5 3550H 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)	4 (Quad-Core)
Threads	4	8
Base clock speed	2.66 GHz	2.1 GHz
Boost clock speed	0.67 GHz	3.7 GHz
Bus type	no data	PCIe 3.0
Bus rate	1333 MHz	no data
Multiplier	no data	21
L1 cache	64 KB (per core)	128K (per core)
L2 cache	4 MB (shared)	512K (per core)
L3 cache	0 KB	4 MB (shared)
Chip lithography	45 nm	12 nm
Die size	2x 82 mm²	209.78 mm²
Maximum core temperature	no data	105 °C
Maximum case temperature (TCase)	71 °C	no data
Number of transistors	456 million	4940 Million
64 bit support	+	+
Windows 11 compatibility	-	+
VID voltage range	0.85V-1.3625V	no data

Compatibility

Information on Core 2 Quad Q8400 and Ryzen 5 3550H 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.

Number of CPUs in a configuration	1	1 (Uniprocessor)
Socket	FCLGA775,LGA775	FP5
Power consumption (TDP)	95 Watt	35 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core 2 Quad Q8400 and Ryzen 5 3550H. You'll probably need this information if you require some particular technology.

Instruction set extensions	no data	MMX (+), SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, SSE4A, AES, AVX, AVX2, FMA3, SHA
AES-NI	-	+
AVX	-	+
Enhanced SpeedStep (EIST)	+	no data
Turbo Boost Technology	-	no data
Hyper-Threading Technology	-	no data
Idle States	+	no data
Thermal Monitoring	+	-
Demand Based Switching	-	no data
FSB parity	-	no data

Security technologies

Core 2 Quad Q8400 and Ryzen 5 3550H technologies aimed at improving security, for example, by protecting against hacks.

TXT	-	no data
EDB	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Core 2 Quad Q8400 and Ryzen 5 3550H are enumerated here.

AMD-V	-	+
VT-x	+	no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core 2 Quad Q8400 and Ryzen 5 3550H. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR1, DDR2, DDR3	DDR4
Maximum memory size	no data	64 GB
Max memory channels	no data	2
Maximum memory bandwidth	no data	38.4 GB/s
ECC memory support	-	+

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

On certain motherboards (Chipset feature)

AMD Radeon RX Vega 8 (Ryzen 2000/3000) ( - 1200 MHz)

Peripherals

Specifications and connection of peripherals supported by Core 2 Quad Q8400 and Ryzen 5 3550H.

PCIe version	2.0	3.0
PCI Express lanes	no data	12

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.

Core 2 Quad Q8400 1.30

Ryzen 5 3550H 4.89
+276%

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.

Core 2 Quad Q8400 2067

Ryzen 5 3550H 7765
+276%

GeekBench 5 Single-Core

GeekBench 5 Single-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses only a single CPU core.

Core 2 Quad Q8400 328

Ryzen 5 3550H 943
+188%

GeekBench 5 Multi-Core

GeekBench 5 Multi-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses all available CPU cores.

Core 2 Quad Q8400 896

Ryzen 5 3550H 2861
+219%

Gaming performance

Pros & cons summary

Performance score	1.30	4.89
Recency	19 April 2009	6 January 2019
Threads	4	8
Chip lithography	45 nm	12 nm
Power consumption (TDP)	95 Watt	35 Watt

Ryzen 5 3550H has a 276.2% higher aggregate performance score, an age advantage of 9 years, 100% more threads, a 275% more advanced lithography process, and 171.4% lower power consumption.

The Ryzen 5 3550H is our recommended choice as it beats the Core 2 Quad Q8400 in performance tests.

Note that Core 2 Quad Q8400 is a desktop processor while Ryzen 5 3550H is a notebook one.

Should you still have questions on choice between Core 2 Quad Q8400 and Ryzen 5 3550H, ask them in Comments section, and we shall answer.