Core i5-4278U vs Core i5-8250U

Primary details

Comparing Core i5-8250U and Core i5-4278U processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	1352	1906
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Laptop
Series	Intel Core i5	Intel Core i5
Architecture codename	Kaby Lake Refresh (2017−2019)	Haswell (2013−2015)
Release date	21 August 2017 (6 years ago)	21 July 2014 (9 years ago)
Launch price (MSRP)	$297	$315
Current price	$668 (2.2x MSRP)	$776 (2.5x MSRP)

Detailed specifications

Core i5-8250U 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	8	4
Base clock speed	1.6 GHz	2.6 GHz
Boost clock speed	3.4 GHz	3.1 GHz
L1 cache	64K (per core)	128 KB
L2 cache	256K (per core)	512 KB
L3 cache	6 MB (shared)	3 MB
Chip lithography	14 nm	22 nm
Die size	123 mm2	181 mm2
Maximum core temperature	100 °C	100 °C
Maximum case temperature (TCase)	72 °C	no data
Number of transistors	no data	1300 Million
64 bit support	+	+
Windows 11 compatibility	+	-
Unlocked multiplier	No	No

Compatibility

Information on Core i5-8250U 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	FCBGA1356,FC-BGA1356	FCBGA1168
Power consumption (TDP)	15 Watt	28 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i5-8250U 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® AVX2	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2
AES-NI	+	+
AVX	+	+
Enhanced SpeedStep (EIST)	+	+
Speed Shift	+	no data
My WiFi	+	no data
Turbo Boost Technology	2.0	2.0
Hyper-Threading Technology	+	+
TSX	-	-
Idle States	+	+
Thermal Monitoring	+	+
Flex Memory Access	+	no data
SIPP	-	no data
Smart Response	+	no data
Status	Discontinued	Discontinued

Security technologies

Core i5-8250U and Core i5-4278U technologies aimed at improving security, for example, by protecting against hacks.

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

Virtualization technologies

Virtual machine speed-up technologies supported by Core i5-8250U 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 i5-8250U and Core i5-4278U. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4-2400, LPDDR3-2133	DDR3
Maximum memory size	32 GB	16 GB
Max memory channels	2	2
Maximum memory bandwidth	37.5 GB/s	25.6 GB/s
ECC memory support	-	-

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card Compare	Intel HD Graphics 620	Intel Iris Graphics 5100
Max video memory	32 GB	2 GB
Quick Sync Video	+	+
Clear Video	+	no data
Clear Video HD	+	+
Graphics max frequency	1.1 GHz	1.1 GHz
InTru 3D	no data	+

Graphics interfaces

Available interfaces and connections of Core i5-8250U and Core i5-4278U integrated GPUs.

Number of displays supported	3	3
eDP	+	+
DisplayPort	+	+
HDMI	+	+
DVI	+	no data

Graphics image quality

Maximum display resolutions supported by Core i5-8250U and Core i5-4278U integrated GPUs, including resolutions over different interfaces.

4K resolution support	+	no data
Max resolution over HDMI 1.4	4096x2304@24Hz	3280x2000@60Hz
Max resolution over eDP	4096x2304@60Hz	no data
Max resolution over DisplayPort	4096x2304@60Hz	3200x2000@60Hz

Graphics API support

APIs supported by Core i5-8250U and Core i5-4278U integrated GPUs, sometimes API versions are included.

DirectX	12	11.2/12
OpenGL	4.4	4.3

Peripherals

Specifications and connection of peripherals supported by Core i5-8250U and Core i5-4278U.

PCIe version	3.0	2
PCI Express lanes	12	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.

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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.

Core i5-8250U outperforms Core i5-4278U by 117% based on our aggregated benchmark results.

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Pros & cons summary

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Performance score	3.98	1.83
Integrated graphics card	2.42	1.82
Recency	21 August 2017	21 July 2014
Physical cores	4	2
Threads	8	4
Cost	$297	$315
Chip lithography	14 nm	22 nm
Power consumption (TDP)	15 Watt	28 Watt

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Should you still have questions on choice between Core i5-8250U and Core i5-4278U, ask them in Comments section, and we shall answer.

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