Product comparison · 2 laptops

HP ProBook LG657ET laptop Intel® Core™ i5 i5-2520M vs HP ProBook 4520s + AQ731AA

110specifications compared
41differ
69identical
46known for one product only

Key differences

Processor generation
- ProBook LG657ET laptop Intel® Core™ i5 i5-2520M:2nd gen Intel® Core™ i5
- ProBook 4520s + AQ731AA:4th gen Intel® Core™ i5
Processor model
- ProBook LG657ET laptop Intel® Core™ i5 i5-2520M:i5-2520M
- ProBook 4520s + AQ731AA:i5-480M
Processor boost frequency
- ProBook LG657ET laptop Intel® Core™ i5 i5-2520M:3.2 GHz
- ProBook 4520s + AQ731AA:2.93 GHz
Processor frequency
- ProBook LG657ET laptop Intel® Core™ i5 i5-2520M:2.5 GHz
- ProBook 4520s + AQ731AA:2.66 GHz
System bus rate
- ProBook LG657ET laptop Intel® Core™ i5 i5-2520M:5 GT/s
- ProBook 4520s + AQ731AA:2.5 GT/s
Processor socket
- ProBook LG657ET laptop Intel® Core™ i5 i5-2520M:Socket 988
- ProBook 4520s + AQ731AA:BGA 1288
Processor codename
- ProBook LG657ET laptop Intel® Core™ i5 i5-2520M:Sandy Bridge
- ProBook 4520s + AQ731AA:Arrandale
Stepping
- ProBook LG657ET laptop Intel® Core™ i5 i5-2520M:J1
- ProBook 4520s + AQ731AA:K0

Side by side

Differences highlightedShow differences only

Comparison of LG657ET, ProBook 4520s + AQ731AA
156 specifications	A HP ProBook LG657ET laptop Intel® Core™ i5 i5-2520M Model LG657ET View product	B HP ProBook 4520s + AQ731AA View product
Designidentical
Product colourKnown for one	Black	Unknown — not stated by the source
Housing materialKnown for one	Plastic	Unknown — not stated by the source
Country of origin	China	China
Displayidentical
Display diagonal	39.6 cm (15.6")	39.6 cm (15.6")
Display resolutionKnown for one	Unknown — not stated by the source	1366 x 768 pixels
LED backlightKnown for one	Unknown — not stated by the source	Yes
Native aspect ratioKnown for one	Unknown — not stated by the source	16:9
Processor12 differ
Processor manufacturer	Intel	Intel
Processor family	Intel® Core™ i5	Intel® Core™ i5
Processor generationDiffers	2nd gen Intel® Core™ i5	4th gen Intel® Core™ i5
Processor modelDiffers	i5-2520M	i5-480M
Processor cores	2	2
Processor threads	4	4
Processor boost frequencyDiffers	3.2 GHz	2.93 GHz
Processor frequencyDiffers	2.5 GHz	2.66 GHz
System bus rateDiffers	5 GT/s	2.5 GT/s
Processor cache	3 MB	3 MB
Processor cache type	Smart Cache	Smart Cache
Processor socketDiffers	Socket 988	BGA 1288
Processor lithography	32 nm	32 nm
Processor operating modes	64-bit	64-bit
Processor seriesDiffers	Intel Core i5-2500 Mobile Series	Intel Core i5-400 Series
Processor codenameDiffers	Sandy Bridge	Arrandale
Bus type	DMI	DMI
FSB Parity	No	No
SteppingDiffers	J1	K0
Thermal Design Power (TDP)	35 W	35 W
TjunctionDiffers	100 °C	105 °C
Maximum number of PCI Express lanes	16	16
PCI Express configurationsDiffers	1x16, 2x8, 1x8+2x4	1x16
PCI Express slots version	2.0	2.0
CPU multiplier (bus/core ratio)Differs	25	20
ECC supported by processor	No	No
Number of Processing Die TransistorsKnown for one	Unknown — not stated by the source	382 M
Processing Die sizeKnown for one	Unknown — not stated by the source	81 mm²
Memory2 differ
Internal memory	4 GB	4 GB
Internal memory typeKnown for one	DDR3-SDRAM	Unknown — not stated by the source
Memory clock speedDiffers	1333 MHz	1066 MHz
Memory slots	2x SO-DIMM	2x SO-DIMM
Maximum internal memoryDiffers	16 GB	8 GB
Storageidentical
Total storage capacity	320 GB	320 GB
Total HDDs capacityKnown for one	320 GB	Unknown — not stated by the source
HDD capacityKnown for one	320 GB	Unknown — not stated by the source
HDD interface	SATA II	SATA II
HDD speed	7200 RPM	7200 RPM
Optical drive type	DVD Super Multi DL	DVD Super Multi DL
Card reader integrated	Yes	Yes
Compatible memory cardsKnown for one	MMC, SD	Unknown — not stated by the source
Graphics3 differ
On-board graphics card	Yes	Yes
Graphics card family	AMD	AMD
On-board graphics card family	Intel® HD Graphics	Intel® HD Graphics
On-board graphics card modelDiffers	Intel® HD Graphics 3000	Intel® HD Graphics
On-board graphics card base frequencyDiffers	650 MHz	500 MHz
On-board graphics card dynamic frequency (max)Differs	1300 MHz	766 MHz
On-board graphics card IDKnown for one	0x116	Unknown — not stated by the source
Discrete graphics cardKnown for one	Unknown — not stated by the source	Yes
Discrete graphics card modelKnown for one	Unknown — not stated by the source	AMD Radeon HD 5470
Audio1 differ
Audio systemDiffers	SRS	High Definition Audio
Number of built-in speakers	2	2
Networkidentical
Wi-Fi	Yes	Yes
Ethernet LAN	Yes	Yes
Bluetooth	Yes	Yes
Bluetooth version	2.1+EDR	2.1+EDR
Cabling technologyKnown for one	10/100/1000Base-T(X)	Unknown — not stated by the source
Integrated 4G WiMAXKnown for one	Yes	Unknown — not stated by the source
Networking featuresKnown for one	Unknown — not stated by the source	Gigabit Ethernet
Ports & interfaces3 differ
USB 2.0 ports quantityDiffers	4	3
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantityKnown for one	0	Unknown — not stated by the source
eSATA/USB 2.0 ports quantityKnown for one	1	Unknown — not stated by the source
eSATA/USB 3.2 Gen 1 (3.1 Gen 1) ports quantityKnown for one	0	Unknown — not stated by the source
eSATA ports quantityDiffers	0	1
Ethernet LAN (RJ-45) ports	1	1
HDMI ports quantityDiffers	0	1
DisplayPorts quantityKnown for one	1	Unknown — not stated by the source
DVI port	No	No
VGA (D-Sub) ports quantity	1	1
Firewire (IEEE 1394) portsKnown for one	1	Unknown — not stated by the source
Thunderbolt ports quantityKnown for one	0	Unknown — not stated by the source
Headphone outputs	1	1
S/PDIF out port	No	No
Microphone in	Yes	Yes
ExpressCard slot	Yes	Yes
CardBus PCMCIA slots quantity	0	0
CardBus PCMCIA slot type	No	No
Modem (RJ-11) portsKnown for one	1	Unknown — not stated by the source
TV-out	No	No
Serial ports quantityKnown for one	1	Unknown — not stated by the source
USB 1.1 ports quantityKnown for one	1	Unknown — not stated by the source
Docking connectorKnown for one	Unknown — not stated by the source	No
SmartCard slotKnown for one	Unknown — not stated by the source	Yes
Keyboardidentical
Keyboard layoutKnown for one	QWERTY	Unknown — not stated by the source
Pointing deviceKnown for one	Unknown — not stated by the source	Touchpad
Softwareidentical
Operating system installed	Windows 7 Professional	Windows 7 Professional
Operating system architecture	64-bit	64-bit
Processor special features16 differ
Intel® Wireless Display (Intel® WiDi)Differs	Yes	No
CPU configuration (max)	1	1
Embedded options available	No	No
Enhanced Intel SpeedStep Technology	Yes	Yes
Execute Disable Bit	Yes	Yes
Graphics & IMC lithographyDiffers	32 nm	45 nm
Idle States	Yes	Yes
Intel 64	Yes	Yes
Intel Clear Video TechnologyDiffers	No	Yes
Intel Demand Based Switching	No	No
Intel Dual Display Capable Technology	Yes	Yes
Intel Enhanced Halt State	Yes	Yes
Intel FDI Technology	Yes	Yes
Intel Fast Memory Access	Yes	Yes
Intel Flex Memory Access	Yes	Yes
Intel Identity Protection Technology versionKnown for one	1.00	Unknown — not stated by the source
Intel Rapid Storage Technology	No	No
Intel Trusted Execution TechnologyDiffers	Yes	No
Intel VT-x with Extended Page Tables (EPT)	Yes	Yes
Intel Virtualization Technology (VT-x)	Yes	Yes
Intel Virtualization Technology for Directed I/O (VT-d)Differs	Yes	No
Intel® AES New Instructions (Intel® AES-NI)Differs	Yes	No
Intel® Anti-Theft Technology (Intel® AT)Differs	Yes	No
Intel® Clear Video HD Technology (Intel® CVT HD)	Yes	Yes
Intel® Clear Video Technology for Mobile Internet Devices (Intel CVT for MID)Differs	No	Yes
Intel® Hyper Threading Technology (Intel® HT Technology)	Yes	Yes
Intel® Identity Protection Technology (Intel® IPT)Known for one	Yes	Unknown — not stated by the source
Intel® InTru™ 3D TechnologyDiffers	Yes	No
Intel® Insider™	No	No
Intel® My WiFi Technology (Intel® MWT)Differs	Yes	No
Intel® Quick Sync Video TechnologyDiffers	Yes	No
Intel® Smart Cache	Yes	Yes
Intel® Turbo Boost TechnologyDiffers	2.0	1.0
Processor ARK IDDiffers	52229	52952
Processor codeDiffers	SR048	SLC26
Processor package sizeDiffers	37.5 x 37.5 (rPGA988B); 31 x 24 (BGA1023)	rPGA 37.5x 37.5, BGA 34x28
Supported instruction setsDiffers	AVX	SSE4.1, SSE4.2
Thermal Monitoring Technologies	Yes	Yes
Conflict-Free processor	No	No
Physical Address Extension (PAE)Known for one	Unknown — not stated by the source	Yes
Batteryidentical
Number of battery cells	6	6
Battery capacityKnown for one	55 Wh	Unknown — not stated by the source
Battery life (max)Known for one	Unknown — not stated by the source	5 h
Poweridentical
AC adapter powerKnown for one	90 W	Unknown — not stated by the source
DC-in jack	Yes	Yes
Security1 differ
Cable lock slotDiffers	No	Yes
Trusted Platform Module (TPM)Known for one	Yes	Unknown — not stated by the source
Password protection typeKnown for one	HDD, User	Unknown — not stated by the source
HDD user passwordKnown for one	Yes	Unknown — not stated by the source
Cable lock slot typeKnown for one	Unknown — not stated by the source	Kensington
Operational conditionsidentical
Operating temperature (T-T)Known for one	5 - 35 °C	Unknown — not stated by the source
Sustainabilityidentical
Sustainability certificatesKnown for one	ENERGY STAR	Unknown — not stated by the source
Weight & dimensions3 differ
WeightDiffers	2.5 kg	2.39 kg
WidthDiffers	374 mm	371.8 mm
DepthDiffers	251 mm	249.6 mm
HeightKnown for one	34 mm	Unknown — not stated by the source
Height (front)Known for one	Unknown — not stated by the source	2.77 cm
Other featuresidentical
Infrared data port	No	No
Intel segment tagging	Enterprise	Enterprise
Supplied AC adapter type	AC	AC
Optical driveidentical
LightScribeKnown for one	Unknown — not stated by the source	Yes
Performanceidentical
Motherboard chipsetKnown for one	Unknown — not stated by the source	Intel® HM57 Express

A dash means the value is not stated by the source. Unknown values are never counted for or against a product, and there is no overall score.

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