Ryzen 7 5825U vs Core 2 Quad Q8400

Place in the ranking	2268	673
Place by popularity	not in top-100	not in top-100
Market segment	Desktop processor	Laptop
Series	no data	AMD Cezanne (Zen 3, Ryzen 5000)
Power efficiency	1.30	72.81
Architecture codename	Yorkfield (2007−2009)	Barcelo-U (Zen 3) (2022)
Release date	19 April 2009 (15 years ago)	6 January 2022 (2 years ago)

Detailed specifications

Core 2 Quad Q8400 and Ryzen 7 5825U 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	4	16
Base clock speed	2.66 GHz	2 GHz
Boost clock speed	0.67 GHz	4.5 GHz
Bus rate	1333 MHz	no data
L1 cache	64 KB (per core)	64K (per core)
L2 cache	4 MB (shared)	512K (per core)
L3 cache	0 KB	16 MB (shared)
Chip lithography	45 nm	7 nm
Die size	2x 82 mm²	180 mm²
Maximum core temperature	no data	95 °C
Maximum case temperature (TCase)	71 °C	no data
Number of transistors	456 million	10,700 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 7 5825U 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	FCLGA775,LGA775	FP6
Power consumption (TDP)	95 Watt	15 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core 2 Quad Q8400 and Ryzen 7 5825U. 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
Precision Boost 2	no data	+

Security technologies

Core 2 Quad Q8400 and Ryzen 7 5825U 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 7 5825U 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 7 5825U. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types

DDR1, DDR2, DDR3

DDR4

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

On certain motherboards (Chipset feature)

AMD Radeon RX Vega 8 (Ryzen 4000/5000)

Peripherals

Specifications and connection of peripherals supported by Core 2 Quad Q8400 and Ryzen 7 5825U.

PCIe version	2.0	3.0
PCI Express lanes	no data	16

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 7 5825U 11.54
+788%

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 7 5825U 18329
+787%

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 7 5825U 1721
+425%

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 7 5825U 6340
+608%

Gaming performance

Pros & cons summary

Performance score	1.30	11.54
Recency	19 April 2009	6 January 2022
Physical cores	4	8
Threads	4	16
Chip lithography	45 nm	7 nm
Power consumption (TDP)	95 Watt	15 Watt

Ryzen 7 5825U has a 787.7% higher aggregate performance score, an age advantage of 12 years, 100% more physical cores and 300% more threads, a 542.9% more advanced lithography process, and 533.3% lower power consumption.

The Ryzen 7 5825U 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 7 5825U is a notebook one.

Should you still have questions on choice between Core 2 Quad Q8400 and Ryzen 7 5825U, ask them in Comments section, and we shall answer.