Xeon E-2478 vs i7-5557U

Primary details

Comparing Core i7-5557U and Xeon E-2478 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	1944	314
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	no data	82.64
Market segment	Laptop	Server
Series	Intel Core i7	no data
Power efficiency	6.59	22.22
Architecture codename	Broadwell-U (2015)	Raptor Lake-S (2023−2024)
Release date	1 March 2015 (9 years ago)	14 December 2023 (less than a year ago)
Launch price (MSRP)	$426	$568

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Core i7-5557U and Xeon E-2478 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)	8 (Octa-Core)
Threads	4	16
Base clock speed	3.1 GHz	2.8 GHz
Boost clock speed	3.4 GHz	5.2 GHz
Bus rate	5 GT/s	16 GT/s
L1 cache	64K (per core)	80 KB (per core)
L2 cache	256K (per core)	2 MB (per core)
L3 cache	4 MB (shared)	24 MB (shared)
Chip lithography	14 nm	Intel 7 nm
Die size	133 mm2	257 mm2
Maximum core temperature	105 °C	100 °C
Maximum case temperature (TCase)	105 °C	no data
Number of transistors	1900 Million	no data
64 bit support	+	+
Windows 11 compatibility	-	no data

Compatibility

Information on Core i7-5557U and Xeon E-2478 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	FCLGA1700
Power consumption (TDP)	28 Watt	80 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-5557U and Xeon E-2478. 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
Hyper-Threading Technology	+	+
Idle States	+	+
Thermal Monitoring	+	+
Flex Memory Access	+	no data
Smart Response	+	no data
Turbo Boost Max 3.0	no data	+
FDI	+	no data
Fast Memory Access	+	no data

Security technologies

Core i7-5557U and Xeon E-2478 technologies aimed at improving security, for example, by protecting against hacks.

TXT	-	+
EDB	+	+
Secure Key	+	+
Identity Protection	+	-
OS Guard	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by Core i7-5557U and Xeon E-2478 are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i7-5557U and Xeon E-2478. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR5-4800
Maximum memory size	16 GB	128 GB
Max memory channels	2	2
Maximum memory bandwidth	25.6 GB/s	no data
ECC memory support	-	+

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	Intel Iris Graphics 6100	N/A
Max video memory	16 GB	no data
Quick Sync Video	+	-
Clear Video	+	no data
Clear Video HD	+	no data
Graphics max frequency	1.1 GHz	no data
InTru 3D	+	no data

Graphics interfaces

Available interfaces and connections of Core i7-5557U and Xeon E-2478 integrated GPUs.

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

Graphics image quality

Maximum display resolutions supported by Core i7-5557U and Xeon E-2478 integrated GPUs, including resolutions over different interfaces.

Max resolution over HDMI 1.4	2560x1600@60Hz	no data
Max resolution over DisplayPort	3840x2160@60Hz	no data

Graphics API support

APIs supported by Core i7-5557U and Xeon E-2478 integrated GPUs, sometimes API versions are included.

DirectX	11.2/12	no data
OpenGL	4.3	no data

Peripherals

Specifications and connection of peripherals supported by Core i7-5557U and Xeon E-2478.

PCIe version	2.0	5
PCI Express lanes	12	16

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.

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Pros & cons summary

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Performance score	1.95	18.78
Recency	1 March 2015	14 December 2023
Physical cores	2	8
Threads	4	16
Power consumption (TDP)	28 Watt	80 Watt

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Should you still have questions on choice between Core i7-5557U and Xeon E-2478, ask them in Comments section, and we shall answer.

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