i5-4278U vs i5-2400S

Primary details

Comparing Core i5-2400S and Core i5-4278U processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	1923	2012
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	0.26	no data
Market segment	Desktop processor	Laptop
Series	no data	Intel Core i5
Power efficiency	2.90	6.02
Architecture codename	Sandy Bridge (2011−2013)	Haswell (2013−2015)
Release date	9 January 2011 (13 years ago)	21 July 2014 (10 years ago)
Launch price (MSRP)	$141	$315

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Core i5-2400S and Core i5-4278U 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)	2 (Dual-core)
Threads	4	4
Base clock speed	2.5 GHz	2.6 GHz
Boost clock speed	3.3 GHz	3.1 GHz
Bus rate	5 GT/s	5 GT/s
L1 cache	64 KB (per core)	128 KB
L2 cache	256 KB (per core)	512 KB
L3 cache	6144 KB (shared)	3 MB
Chip lithography	32 nm	22 nm
Die size	216 mm2	181 mm2
Maximum core temperature	69 °C	100 °C
Number of transistors	1,160 million	1300 Million
64 bit support	+	+
Windows 11 compatibility	-	-

Compatibility

Information on Core i5-2400S and Core i5-4278U 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	LGA1155	FCBGA1168
Power consumption (TDP)	65 Watt	28 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i5-2400S and Core i5-4278U. You'll probably need this information if you require some particular technology.

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

Security technologies

Core i5-2400S and Core i5-4278U technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	-
EDB	+	+
Secure Key	no data	+
Identity Protection	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by Core i5-2400S and Core i5-4278U are enumerated here.

AMD-V	-	+
VT-d	+	+
VT-x	+	+
EPT	+	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i5-2400S and Core i5-4278U. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR3
Maximum memory size	32 GB	16 GB
Max memory channels	2	2
Maximum memory bandwidth	21 GB/s	25.6 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card Compare	Intel HD Graphics 2000	Intel Iris Graphics 5100
Max video memory	no data	2 GB
Quick Sync Video	+	+
Clear Video HD	+	+
Graphics max frequency	1.1 GHz	1.1 GHz
InTru 3D	+	+

Graphics interfaces

Available interfaces and connections of Core i5-2400S and Core i5-4278U integrated GPUs.

Number of displays supported	2	3
eDP	no data	+
DisplayPort	-	+
HDMI	-	+

Graphics image quality

Maximum display resolutions supported by Core i5-2400S and Core i5-4278U integrated GPUs, including resolutions over different interfaces.

Max resolution over HDMI 1.4	no data	3280x2000@60Hz
Max resolution over DisplayPort	no data	3200x2000@60Hz

Graphics API support

APIs supported by Core i5-2400S and Core i5-4278U integrated GPUs, sometimes API versions are included.

DirectX	no data	11.2/12
OpenGL	no data	4.3

Peripherals

Specifications and connection of peripherals supported by Core i5-2400S and Core i5-4278U.

PCIe version	2.0	2
PCI Express lanes	16	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.

---

Pros & cons summary

---

Performance score	1.99	1.78
Integrated graphics card	0.55	1.93
Recency	9 January 2011	21 July 2014
Physical cores	4	2
Chip lithography	32 nm	22 nm
Power consumption (TDP)	65 Watt	28 Watt

---

Should you still have questions on choice between Core i5-2400S and Core i5-4278U, 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.

---