Ryzen 9 7950X vs Core 2 Quad Q8400

Primary details

Comparing Core 2 Quad Q8400 and Ryzen 9 7950X processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	2164	58
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	2.73	61.02
Market segment	Desktop processor	Desktop processor
Architecture codename	Yorkfield (2007−2009)	Raphael (Zen 4)
Release date	April 2009 (15 years ago)	27 September 2022 (1 year ago)
Current price	$41	$733

Cost-effectiveness evaluation

Performance per price, higher is better.

Ryzen 9 7950X has 2135% better value for money than Core 2 Quad Q8400.

Detailed specifications

Core 2 Quad Q8400 and Ryzen 9 7950X 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)	16 (Hexadeca-Core)
Threads	4	32
Base clock speed	2.66 GHz	4.5 GHz
Boost clock speed	2.67 GHz	5.7 GHz
L1 cache	64K (per core)	64K (per core)
L2 cache	4 MB (shared)	1 MB (per core)
L3 cache	0 KB	64 MB (shared)
Chip lithography	45 nm	5 nm
Die size	2x 81 mm2	CCD = 2x 70 sq. mm, I/O = 122 mm2
Maximum core temperature	71 °C	95 °C
Maximum case temperature (TCase)	71 °C	47 °C
Number of transistors	456 million	13140 Million
64 bit support	+	+
Windows 11 compatibility	-	+
Unlocked multiplier	No	Yes
VID voltage range	0.85V-1.3625V	no data

Compatibility

Information on Core 2 Quad Q8400 and Ryzen 9 7950X 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	AM5
Power consumption (TDP)	95 Watt	170 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core 2 Quad Q8400 and Ryzen 9 7950X. You'll probably need this information if you require some particular technology.

Instruction set extensions	no data	CCD = 5 nm, I/O = 6 nm, 0.650 - 1.475 V
AES-NI	-	+
AVX	no data	+
Enhanced SpeedStep (EIST)	+	no data
Turbo Boost Technology	-	no data
Hyper-Threading Technology	-	no data
Idle States	+	no data
Thermal Monitoring	+	no data
Demand Based Switching	-	no data
FSB parity	-	no data
Status	Discontinued	no data

Security technologies

Core 2 Quad Q8400 and Ryzen 9 7950X 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 9 7950X are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core 2 Quad Q8400 and Ryzen 9 7950X. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types

DDR1, DDR2, DDR3

DDR5-5200

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

no data

AMD Radeon Graphics (Ryzen 7000)

Peripherals

Specifications and connection of peripherals supported by Core 2 Quad Q8400 and Ryzen 9 7950X.

PCIe version	no data	5.0
PCI Express lanes	no data	24

Synthetic benchmark performance

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

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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 9 7950X outperforms Core 2 Quad Q8400 by 2931% based on our aggregate benchmark results.

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Pros & cons summary

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Performance score	1.34	40.62
Physical cores	4	16
Threads	4	32
Chip lithography	45 nm	5 nm
Power consumption (TDP)	95 Watt	170 Watt

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Should you still have questions on choice between Core 2 Quad Q8400 and Ryzen 9 7950X, ask them in Comments section, and we shall answer.

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