Core 2 Quad Q8400s vs Core i5-7400

Primary details

Comparing Core i5-7400 and Core 2 Quad Q8400s processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	1547	not rated
Place by popularity	42	not in top-100
Cost-effectiveness evaluation	0.90	no data
Market segment	Desktop processor	Desktop processor
Series	Intel Core i5	no data
Power efficiency	5.01	no data
Architecture codename	Kaby Lake (2016−2019)	Yorkfield (2007−2009)
Release date	3 January 2017 (7 years ago)	19 April 2009 (15 years ago)
Launch price (MSRP)	$182	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Core i5-7400 and Core 2 Quad Q8400s 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	4
Base clock speed	3 GHz	2.66 GHz
Boost clock speed	3.5 GHz	0.67 GHz
Bus type	DMI 3.0	no data
Bus rate	8 GT/s	1333 MHz
Multiplier	30	no data
L1 cache	64K (per core)	64 KB (per core)
L2 cache	256K (per core)	4 MB (shared)
L3 cache	6 MB (shared)	0 KB
Chip lithography	14 nm	45 nm
Die size	no data	2x 82 mm2
Maximum core temperature	100 °C	no data
Maximum case temperature (TCase)	72 °C	76 °C
Number of transistors	no data	456 million
64 bit support	+	+
Windows 11 compatibility	-	-
VID voltage range	no data	0.85V-1.3625V

Compatibility

Information on Core i5-7400 and Core 2 Quad Q8400s 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 (Uniprocessor)	1
Socket	FCLGA1151	FCLGA775,LGA775
Power consumption (TDP)	65 Watt	65 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i5-7400 and Core 2 Quad Q8400s. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2	no data
AES-NI	+	-
AVX	+	-
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	2.0	-
Hyper-Threading Technology	-	-
Idle States	+	+
Thermal Monitoring	+	+
Demand Based Switching	no data	-

Security technologies

Core i5-7400 and Core 2 Quad Q8400s technologies aimed at improving security, for example, by protecting against hacks.

TXT	-	-
EDB	+	+
Secure Key	+	no data
MPX	+	-
Identity Protection	+	-
SGX	Yes with Intel® ME	no data
OS Guard	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Core i5-7400 and Core 2 Quad Q8400s are enumerated here.

VT-d	+	no data
VT-x	+	+
EPT	+	no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i5-7400 and Core 2 Quad Q8400s. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4	DDR1, DDR2, DDR3
Maximum memory size	64 GB	no data
Max memory channels	2	no data
Maximum memory bandwidth	38.397 GB/s	no data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	Intel HD Graphics 630	On certain motherboards (Chipset feature)
Max video memory	64 GB	no data
Quick Sync Video	+	-
Clear Video	+	no data
Clear Video HD	+	no data
Graphics max frequency	1 GHz	no data
InTru 3D	+	no data

Graphics interfaces

Available interfaces and connections of Core i5-7400 and Core 2 Quad Q8400s integrated GPUs.

Number of displays supported

3

no data

Graphics image quality

Maximum display resolutions supported by Core i5-7400 and Core 2 Quad Q8400s integrated GPUs, including resolutions over different interfaces.

4K resolution support	+	no data
Max resolution over HDMI 1.4	4096x2304@24Hz	no data
Max resolution over eDP	4096x2304@60Hz	no data
Max resolution over DisplayPort	4096x2304@60Hz	no data

Graphics API support

APIs supported by Core i5-7400 and Core 2 Quad Q8400s integrated GPUs, sometimes API versions are included.

DirectX	12	no data
OpenGL	4.5	no data

Peripherals

Specifications and connection of peripherals supported by Core i5-7400 and Core 2 Quad Q8400s.

PCIe version	3.0	2.0
PCI Express lanes	16	no data

Pros & cons summary

---

Recency	3 January 2017	19 April 2009
Chip lithography	14 nm	45 nm

---

Should you still have questions on choice between Core i5-7400 and Core 2 Quad Q8400s, ask them in Comments section, and we shall answer.

Vote for your favorite

Do you think we are right or mistaken in our choice? Vote by clicking "Like" button near your favorite CPU.

---