Intel Core i7-4578U vs Intel Core i7-920XM

Comparative analysis of Intel Core i7-4578U and Intel Core i7-920XM processors for all known characteristics in the following categories: Essentials, Performance, Memory, Graphics, Graphics interfaces, Graphics image quality, Graphics API support, Compatibility, Peripherals, Security & Reliability, Advanced Technologies, Virtualization. Benchmark processor performance analysis: PassMark - Single thread mark, PassMark - CPU mark, Geekbench 4 - Single Core, Geekbench 4 - Multi-Core, CompuBench 1.5 Desktop - Face Detection (mPixels/s), CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s), CompuBench 1.5 Desktop - Video Composition (Frames/s), CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s), CompuBench 1.5 Desktop - T-Rex (Frames/s).

Intel Core i7-4578U

Intel Core i7-920XM

Differences

Reasons to consider the Intel Core i7-4578U

CPU is newer: launch date 4 year(s) 9 month(s) later
Around 9% higher clock speed: 3.50 GHz vs 3.20 GHz
A newer manufacturing process allows for a more powerful, yet cooler running processor: 22 nm vs 45 nm
2x more maximum memory size: 16 GB vs 8 GB
Around 96% lower typical power consumption: 28 Watt vs 55 Watt
Around 86% better performance in PassMark - Single thread mark: 1927 vs 1035
Around 57% better performance in PassMark - CPU mark: 3079 vs 1964
Around 72% better performance in Geekbench 4 - Single Core: 788 vs 458
Around 23% better performance in Geekbench 4 - Multi-Core: 1697 vs 1383

Specifications (specs)
Launch date	21 July 2014 vs 23 September 2009
Maximum frequency	3.50 GHz vs 3.20 GHz
Manufacturing process technology	22 nm vs 45 nm
Maximum memory size	16 GB vs 8 GB
Thermal Design Power (TDP)	28 Watt vs 55 Watt
Benchmarks
PassMark - Single thread mark	1927 vs 1035
PassMark - CPU mark	3079 vs 1964
Geekbench 4 - Single Core	788 vs 458
Geekbench 4 - Multi-Core	1697 vs 1383

Reasons to consider the Intel Core i7-920XM

2 more cores, run more applications at once: 4 vs 2
4 more threads: 8 vs 4
2x more L1 cache, more data can be stored in the L1 cache for quick access later
2x more L2 cache, more data can be stored in the L2 cache for quick access later
2x more L3 cache, more data can be stored in the L3 cache for quick access later

Number of cores	4 vs 2
Number of threads	8 vs 4
L1 cache	256 KB vs 128 KB
L2 cache	1024 KB vs 512 KB
L3 cache	8196 KB vs 4 MB

Compare benchmarks

CPU 1: Intel Core i7-4578U
CPU 2: Intel Core i7-920XM

PassMark - Single thread mark

CPU 1

CPU 2

1927

1035

PassMark - CPU mark

CPU 1

CPU 2

3079

1964

Geekbench 4 - Single Core

CPU 1

CPU 2

788

458

Geekbench 4 - Multi-Core

CPU 1

CPU 2

1697

1383

Name	Intel Core i7-4578U	Intel Core i7-920XM
PassMark - Single thread mark	1927	1035
PassMark - CPU mark	3079	1964
Geekbench 4 - Single Core	788	458
Geekbench 4 - Multi-Core	1697	1383
CompuBench 1.5 Desktop - Face Detection (mPixels/s)	2.408
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)	43.106
CompuBench 1.5 Desktop - Video Composition (Frames/s)	1.123
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)	2.835
CompuBench 1.5 Desktop - T-Rex (Frames/s)	0.297

Compare specifications (specs)

	Intel Core i7-4578U	Intel Core i7-920XM
Essentials
Architecture codename	Haswell	Clarksfield
Launch date	21 July 2014	23 September 2009
Launch price (MSRP)	$426	$1,054
Place in performance rating	2516	2526
Processor Number	i7-4578U	i7-920XM
Series	4th Generation Intel® Core™ i7 Processors	Legacy Intel® Core™ Processors
Status	Launched	Discontinued
Vertical segment	Mobile	Mobile
Price now		$399.95
Value for money (0-100)		2.78
Performance
64 bit support
Base frequency	3.00 GHz	2.00 GHz
Bus Speed	5 GT/s DMI2	2.5 GT/s DMI
Die size	181 mm	296 mm2
L1 cache	128 KB	256 KB
L2 cache	512 KB	1024 KB
L3 cache	4 MB	8196 KB
Manufacturing process technology	22 nm	45 nm
Maximum core temperature	100 °C	100°C
Maximum frequency	3.50 GHz	3.20 GHz
Number of cores	2	4
Number of threads	4	8
Transistor count	1300 Million	774 million
Front-side bus (FSB)		2500 MHz
Memory
Max memory channels	2	2
Maximum memory bandwidth	25.6 GB/s	21 GB/s
Maximum memory size	16 GB	8 GB
Supported memory types	DDR3L-1333, 1600; LPDDR3-1333, 1600	DDR3 1066/1333
Graphics
Device ID	0xA2E
Graphics base frequency	200 MHz
Graphics max dynamic frequency	1.20 GHz
Graphics max frequency	1.2 GHz
Intel® Clear Video HD technology
Intel® Flexible Display Interface (Intel® FDI)
Intel® InTru™ 3D technology
Intel® Quick Sync Video
Max video memory	2 GB
Processor graphics	Intel® Iris® Graphics 5100
Graphics interfaces
DisplayPort
eDP
HDMI
Number of displays supported	3
VGA
Wireless Display (WiDi) support
Graphics image quality
Max resolution over DisplayPort	3200x2000@60Hz
Max resolution over HDMI 1.4	3200x2000@60Hz
Max resolution over VGA	N / A
Graphics API support
DirectX	11.2/12
OpenGL	4.3
Compatibility
Low Halogen Options Available
Max number of CPUs in a configuration	1	1
Package Size	40mm x 24mm x 1.5mm	37.5mm x 37.5mm
Sockets supported	FCBGA1168	PGA988
Thermal Design Power (TDP)	28 Watt	55 Watt
Peripherals
Max number of PCIe lanes	12	16
PCI Express revision	2	2
PCIe configurations	4x1, 2x4	1x16, 2x8
Security & Reliability
Execute Disable Bit (EDB)
Intel® Identity Protection technology
Intel® Secure Key technology
Intel® Trusted Execution technology (TXT)
Advanced Technologies
Enhanced Intel SpeedStep® technology
Flexible Display interface (FDI)
Idle States
Instruction set extensions	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2	Intel® SSE4.2
Intel 64
Intel® Advanced Vector Extensions (AVX)
Intel® AES New Instructions
Intel® Hyper-Threading technology
Intel® TSX-NI
Intel® Turbo Boost technology
Intel® vPro™ Platform Eligibility
Thermal Monitoring
Intel® Demand Based Switching
Physical Address Extensions (PAE)		36-bit
Virtualization
AMD Virtualization (AMD-V™)
Intel® Virtualization Technology (VT-x)
Intel® Virtualization Technology for Directed I/O (VT-d)
Intel® VT-x with Extended Page Tables (EPT)