Ryzen 5 5500U vs Core 2 Duo E8400

Place in the ranking	2668	917
Place by popularity	not in top-100	14
Market segment	Desktop processor	Laptop
Series	no data	AMD Lucienne (Zen 2, Ryzen 5000)
Power efficiency	1.07	51.64
Architecture codename	Wolfdale (2008−2010)	Lucienne-U (Zen 2) (2021)
Release date	1 January 2008 (16 years ago)	12 January 2021 (3 years ago)

Detailed specifications

Core 2 Duo E8400 and Ryzen 5 5500U 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	2 (Dual-core)	6 (Hexa-Core)
Threads	2	12
Base clock speed	3 GHz	2.1 GHz
Boost clock speed	3 GHz	4 GHz
Bus rate	1333 MHz	no data
Multiplier	no data	21
L1 cache	64 KB (per core)	384 KB
L2 cache	6 MB (shared)	3 MB
L3 cache	0 KB	8 MB (shared)
Chip lithography	45 nm	7 nm
Die size	104 mm²	156 mm²
Maximum core temperature	no data	105 °C
Maximum case temperature (TCase)	72 °C	no data
Number of transistors	410 million	9,800 million
64 bit support	+	+
Windows 11 compatibility	-	+
VID voltage range	0.85V-1.3625V	no data

Compatibility

Information on Core 2 Duo E8400 and Ryzen 5 5500U 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
Socket	LGA775	FP6
Power consumption (TDP)	65 Watt	15 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core 2 Duo E8400 and Ryzen 5 5500U. You'll probably need this information if you require some particular technology.

Instruction set extensions	no data	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
AES-NI	-	+
FMA	-	+
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 Duo E8400 and Ryzen 5 5500U 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 Duo E8400 and Ryzen 5 5500U are enumerated here.

AMD-V	-	+
VT-d	+	no data
VT-x	+	no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core 2 Duo E8400 and Ryzen 5 5500U. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR1, DDR2, DDR3	DDR4
Maximum memory size	no data	64 GB

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

On certain motherboards (Chipset feature)

AMD Radeon Vega 7

Peripherals

Specifications and connection of peripherals supported by Core 2 Duo E8400 and Ryzen 5 5500U.

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 Duo E8400 0.74

Ryzen 5 5500U 8.22
+1011%

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 Duo E8400 1165

Ryzen 5 5500U 13015
+1017%

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 Duo E8400 370

Ryzen 5 5500U 1286
+248%

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 Duo E8400 604

Ryzen 5 5500U 4530
+650%

Gaming performance

Pros & cons summary

Performance score	0.74	8.22
Recency	1 January 2008	12 January 2021
Physical cores	2	6
Threads	2	12
Chip lithography	45 nm	7 nm
Power consumption (TDP)	65 Watt	15 Watt

Ryzen 5 5500U has a 1010.8% higher aggregate performance score, an age advantage of 13 years, 200% more physical cores and 500% more threads, a 542.9% more advanced lithography process, and 333.3% lower power consumption.

The Ryzen 5 5500U is our recommended choice as it beats the Core 2 Duo E8400 in performance tests.

Note that Core 2 Duo E8400 is a desktop processor while Ryzen 5 5500U is a notebook one.

Should you still have questions on choice between Core 2 Duo E8400 and Ryzen 5 5500U, ask them in Comments section, and we shall answer.