i5-4258U vs i5-5287U

Primary details

Comparing Core i5-5287U and Core i5-4258U processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	1937	2066
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Laptop
Series	Intel Core i5	Intel Core i5
Power efficiency	6.62	5.61
Architecture codename	Broadwell-U (2015)	Haswell (2013−2015)
Release date	1 March 2015 (9 years ago)	4 June 2013 (11 years ago)
Launch price (MSRP)	$315	$342

Detailed specifications

Core i5-5287U and Core i5-4258U 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	2 (Dual-core)	2 (Dual-core)
Threads	4	4
Base clock speed	2.9 GHz	2.4 GHz
Boost clock speed	3.3 GHz	2.9 GHz
Bus rate	5 GT/s	5 GT/s
L1 cache	64K (per core)	64K (per core)
L2 cache	256K (per core)	256K (per core)
L3 cache	3 MB (shared)	3 MB (shared)
Chip lithography	14 nm	22 nm
Die size	133 mm2	118 mm2
Maximum core temperature	105 °C	100 °C
Maximum case temperature (TCase)	105 °C	no data
Number of transistors	1900 Million	1,400 million
64 bit support	+	+
Windows 11 compatibility	-	-

Compatibility

Information on Core i5-5287U and Core i5-4258U 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	FCBGA1168	FCBGA1168
Power consumption (TDP)	28 Watt	28 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i5-5287U and Core i5-4258U. 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)	+	+
Turbo Boost Technology	2.0	2.0
Hyper-Threading Technology	+	+
Idle States	+	+
Thermal Monitoring	+	+
Flex Memory Access	+	no data
Smart Response	+	no data
GPIO	no data	+
Smart Connect	no data	+
FDI	+	-
Fast Memory Access	+	no data
AMT	no data	9.5
Matrix Storage	no data	-
HD Audio	no data	+
RST	no data	+

Security technologies

Core i5-5287U and Core i5-4258U technologies aimed at improving security, for example, by protecting against hacks.

TXT	-	+
EDB	+	+
Secure Key	+	+
Identity Protection	+	+
OS Guard	+	no data
Anti-Theft	no data	+

Virtualization technologies

Virtual machine speed-up technologies supported by Core i5-5287U and Core i5-4258U are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i5-5287U and Core i5-4258U. Depending on the motherboard, higher memory frequencies may be supported.

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

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card Compare	Intel Iris Graphics 6100	Intel Iris Graphics 5100
Max video memory	16 GB	2 GB
Quick Sync Video	+	+
Clear Video	+	no data
Clear Video HD	+	+
Graphics max frequency	1.1 GHz	1.1 GHz
InTru 3D	+	+

Graphics interfaces

Available interfaces and connections of Core i5-5287U and Core i5-4258U integrated GPUs.

Number of displays supported	3	3
eDP	+	+
DisplayPort	+	+
HDMI	+	+

Graphics image quality

Maximum display resolutions supported by Core i5-5287U and Core i5-4258U integrated GPUs, including resolutions over different interfaces.

Max resolution over HDMI 1.4	2560X1600@60Hz	3280x2000@60Hz
Max resolution over DisplayPort	3840x2160@60Hz	3200x2000@60Hz

Graphics API support

APIs supported by Core i5-5287U and Core i5-4258U integrated GPUs, sometimes API versions are included.

DirectX	11.2/12	11.2/12
OpenGL	4.3	4.3

Peripherals

Specifications and connection of peripherals supported by Core i5-5287U and Core i5-4258U.

PCIe version	2.0	2.0
PCI Express lanes	12	12
PCI support	no data	-
USB revision	no data	3.0
Total number of SATA ports	no data	4
Max number of SATA 6 Gb/s Ports	no data	4
Integrated IDE	no data	-
Number of USB ports	no data	4
Integrated LAN	no data	-
UART	no data	+

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	1.96	1.66
Integrated graphics card	2.33	1.93
Recency	1 March 2015	4 June 2013
Chip lithography	14 nm	22 nm

---

Should you still have questions on choice between Core i5-5287U and Core i5-4258U, 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.

---