Product comparison · 2 laptops

Lenovo P51 + Dock Station vs Lenovo IdeaPad Legion Y Y920 Intel® Core™ i7 i7-7820HK Laptop

167specifications compared
30differ
137identical
26known for one product only

Key differences

Product type
- P51 + Dock Station:Mobile workstation
- IdeaPad Legion Y Y920 Intel® Core™ i7 i7-7820HK Laptop:Laptop
Market positioning
- P51 + Dock Station:High performance
- IdeaPad Legion Y Y920 Intel® Core™ i7 i7-7820HK Laptop:Gaming
Display diagonal
- P51 + Dock Station:39.6 cm (15.6")
- IdeaPad Legion Y Y920 Intel® Core™ i7 i7-7820HK Laptop:43.9 cm (17.3")
Display brightness
- P51 + Dock Station:250 cd/m²
- IdeaPad Legion Y Y920 Intel® Core™ i7 i7-7820HK Laptop:300 cd/m²
Processor model
- P51 + Dock Station:i7-7820HQ
- IdeaPad Legion Y Y920 Intel® Core™ i7 i7-7820HK Laptop:i7-7820HK
Internal memory
- P51 + Dock Station:16 GB
- IdeaPad Legion Y Y920 Intel® Core™ i7 i7-7820HK Laptop:32 GB
Total storage capacity
- P51 + Dock Station:512 GB
- IdeaPad Legion Y Y920 Intel® Core™ i7 i7-7820HK Laptop:2.25 TB
Storage media
- P51 + Dock Station:SSD
- IdeaPad Legion Y Y920 Intel® Core™ i7 i7-7820HK Laptop:HDD+SSD

Side by side

Differences highlightedShow differences only

Comparison of P51 + Dock Station, Y920
193 specifications	A Lenovo P51 + Dock Station View product	B Lenovo IdeaPad Legion Y Y920 Intel® Core™ i7 i7-7820HK Laptop Model Y920 View product
Design3 differ
Product typeDiffers	Mobile workstation	Laptop
Product colour	Black	Black
Form factor	Clamshell	Clamshell
Housing materialDiffers	Aluminium, Glass-reinforced plastic (GRP), Magnesium	Aluminium
Market positioningDiffers	High performance	Gaming
Display2 differ
Display diagonalDiffers	39.6 cm (15.6")	43.9 cm (17.3")
Display resolution	1920 x 1080 pixels	1920 x 1080 pixels
Touchscreen	No	No
HD type	Full HD	Full HD
Panel type	IPS	IPS
LED backlight	Yes	Yes
Native aspect ratio	16:9	16:9
Display surface	Matt	Matt
Screen shape	Flat	Flat
Display brightnessDiffers	250 cd/m²	300 cd/m²
Contrast ratio (typical)Known for one	700:1	Unknown — not stated by the source
Processor1 differ
Processor manufacturer	Intel	Intel
Processor family	Intel® Core™ i7	Intel® Core™ i7
Processor generation	7th gen Intel® Core™ i7	7th gen Intel® Core™ i7
Processor modelDiffers	i7-7820HQ	i7-7820HK
Processor cores	4	4
Processor threads	8	8
Processor boost frequency	3.9 GHz	3.9 GHz
Processor frequency	2.9 GHz	2.9 GHz
Processor cache	8 MB	8 MB
Processor cache type	Smart Cache	Smart Cache
Processor lithography	14 nm	14 nm
Processor operating modes	64-bit	64-bit
Processor series	Intel Core i7-7800 Mobile Series	Intel Core i7-7800 Mobile Series
Processor codename	Kaby Lake	Kaby Lake
Bus type	DMI3	DMI3
Thermal Design Power (TDP)	45 W	45 W
Configurable TDP-down	35 W	35 W
Tjunction	100 °C	100 °C
Maximum number of PCI Express lanes	16	16
PCI Express configurations	1x16, 1x8, 2x4, 2x8	1x16, 1x8, 2x4, 2x8
PCI Express slots version	3.0	3.0
ECC supported by processor	No	No
System bus rateKnown for one	Unknown — not stated by the source	8 GT/s
Processor socketKnown for one	Unknown — not stated by the source	BGA 1440
Memory1 differ
Internal memoryDiffers	16 GB	32 GB
Internal memory type	DDR4-SDRAM	DDR4-SDRAM
Memory clock speed	2400 MHz	2400 MHz
Memory form factor	SO-DIMM	SO-DIMM
Memory layout (slots x size)Known for one	2 x 8 GB	Unknown — not stated by the source
Memory slots	4x SO-DIMM	4x SO-DIMM
Maximum internal memory	64 GB	64 GB
Maximum internal memory (64-bit)	64 GB	64 GB
Storage4 differ
Total storage capacityDiffers	512 GB	2.25 TB
Storage mediaDiffers	SSD	HDD+SSD
Number of SSDs installed	1	1
SSD capacityDiffers	512 GB	256 GB
SSD interfaceKnown for one	PCI Express	Unknown — not stated by the source
SSD form factorKnown for one	M.2	Unknown — not stated by the source
Optical drive type	No	No
Card reader integrated	Yes	Yes
Compatible memory cardsDiffers	MMC, SD, SDHC, SDXC	MMC, MMC+, SD, SDHC, SDIO, SDXC
Number of HDDs installedKnown for one	Unknown — not stated by the source	1
HDD capacityKnown for one	Unknown — not stated by the source	2 TB
HDD interfaceKnown for one	Unknown — not stated by the source	SATA III
HDD speedKnown for one	Unknown — not stated by the source	5400 RPM
Graphics1 differ
On-board graphics card	Yes	Yes
Discrete graphics card	Yes	Yes
Discrete graphics card modelKnown for one	NVIDIA® Quadro® M2200M	Unknown — not stated by the source
Discrete graphics card memoryDiffers	4 GB	8 GB
On-board graphics card family	Intel® HD Graphics	Intel® HD Graphics
On-board graphics card model	Intel® HD Graphics 630	Intel® HD Graphics 630
Maximum on-board graphics card memory	64 GB	64 GB
On-board graphics card base frequency	350 MHz	350 MHz
On-board graphics card dynamic frequency (max)	1100 MHz	1100 MHz
On-board graphics card DirectX version	12.0	12.0
On-board graphics card OpenGL version	4.4	4.4
On-board graphics card ID	0x591B	0x591B
Audioidentical
Audio chipKnown for one	Realtek ALC3268	Unknown — not stated by the source
Number of built-in speakers	2	2
Speaker power	2 W	2 W
Built-in microphone	Yes	Yes
Speakers manufacturerKnown for one	Unknown — not stated by the source	JBL
Built-in subwooferKnown for one	Unknown — not stated by the source	Yes
Audio decodersKnown for one	Unknown — not stated by the source	Dolby Atmos
Cameraidentical
Front camera	Yes	Yes
Front camera resolution (numeric)	1 MP	1 MP
Front camera resolution	1280 x 720 pixels	1280 x 720 pixels
Front camera signal format	720p	720p
Optical driveidentical
LightScribe	No	No
Networkidentical
Wi-Fi	Yes	Yes
Wi-Fi standards	802.11a, Wi-Fi 5 (802.11ac), 802.11b, 802.11g, Wi-Fi 4 (802.11n)	802.11a, Wi-Fi 5 (802.11ac), 802.11b, 802.11g, Wi-Fi 4 (802.11n)
Ethernet LAN	Yes	Yes
Ethernet LAN data rates	10,100,1000 Mbit/s	10,100,1000 Mbit/s
Bluetooth	Yes	Yes
Bluetooth version	4.1	4.1
Ports & interfaces3 differ
USB 2.0 ports quantity	0	0
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity	4	4
USB 3.2 Gen 1 (3.1 Gen 1) Type-C ports quantity	1	1
USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity	0	0
USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity	0	0
Ethernet LAN (RJ-45) ports	1	1
HDMI ports quantity	1	1
HDMI versionDiffers	1.4b	2.0a
DisplayPorts quantityDiffers	0	1
Mini DisplayPorts quantityKnown for one	1	Unknown — not stated by the source
DVI port	No	No
VGA (D-Sub) ports quantity	0	0
Thunderbolt ports quantity	0	0
Thunderbolt 3 ports quantity	0	0
Headphone outputs	0	0
Combo headphone/mic port	Yes	Yes
Microphone in	No	No
Docking connectorDiffers	Yes	No
ExpressCard slotKnown for one	Yes	Unknown — not stated by the source
SmartCard slotKnown for one	Yes	Unknown — not stated by the source
USB Sleep-and-Charge	Yes	Yes
USB Sleep-and-Charge ports	1	1
Performanceidentical
Motherboard chipset	Intel® CM238	Intel® CM238
Keyboard1 differ
Pointing deviceDiffers	ThinkPad UltraNav	Touchpad
Keyboard backlit	Yes	Yes
Numeric keypad	Yes	Yes
Spill-resistant keyboardKnown for one	Yes	Unknown — not stated by the source
Full-size keyboard	Yes	Yes
Windows keys	Yes	Yes
Software1 differ
Operating system installedDiffers	Windows 10 Pro	Windows 10 Home
Operating system architecture	64-bit	64-bit
Processor special features4 differ
Intel® Wireless Display (Intel® WiDi)	Yes	Yes
CPU configuration (max)	1	1
Embedded options available	No	No
Enhanced Intel SpeedStep Technology	Yes	Yes
Execute Disable Bit	Yes	Yes
Graphics & IMC lithography	14 nm	14 nm
Idle States	Yes	Yes
Intel 64	Yes	Yes
Intel Clear Video Technology	Yes	Yes
Intel Enhanced Halt State	Yes	Yes
Intel Flex Memory Access	Yes	Yes
Intel HD Graphics	Yes	Yes
Intel Identity Protection Technology version	1.00	1.00
Intel Secure Key Technology version	1.00	1.00
Intel Small Business Advantage (SBA) version	1.00	1.00
Intel Smart Response Technology version	1.00	1.00
Intel Software Guard Extensions (Intel SGX)	Yes	Yes
Intel Stable Image Platform Program (SIPP)Differs	Yes	No
Intel Stable Image Platform Program (SIPP) versionDiffers	1.00	0.00
Intel TSX-NI	Yes	Yes
Intel TSX-NI version	1.00	1.00
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)	Yes	Yes
Intel® AES New Instructions (Intel® AES-NI)	Yes	Yes
Intel® Clear Video HD Technology (Intel® CVT HD)	Yes	Yes
Intel® Clear Video Technology for Mobile Internet Devices (Intel CVT for MID)	Yes	Yes
Intel® Hyper Threading Technology (Intel® HT Technology)	Yes	Yes
Intel® Identity Protection Technology (Intel® IPT)	Yes	Yes
Intel® InTru™ 3D Technology	Yes	Yes
Intel® My WiFi Technology (Intel® MWT)	Yes	Yes
Intel® OS Guard	Yes	Yes
Intel® Quick Sync Video Technology	Yes	Yes
Intel® Secure Key	Yes	Yes
Intel® Smart Cache	Yes	Yes
Intel® Smart Response Technology	Yes	Yes
Intel® Turbo Boost Technology	2.0	2.0
Processor ARK IDDiffers	97496	97464
Processor package size	42 x 28 mm	42 x 28 mm
Supported instruction sets	AVX 2.0, SSE4.1, SSE4.2	AVX 2.0, SSE4.1, SSE4.2
Thermal Monitoring Technologies	Yes	Yes
Conflict-Free processor	Yes	Yes
Battery1 differ
Battery technology	Lithium Polymer (LiPo)	Lithium Polymer (LiPo)
Number of battery cells	6	6
Battery capacity	90 Wh	90 Wh
Battery life (max)Differs	6.1 h	3.5 h
Power1 differ
AC adapter powerDiffers	170 W	230 W
AC adapter frequency	50 - 60 Hz	50 - 60 Hz
AC adapter input voltage	100 - 240 V	100 - 240 V
DC-in jack	Yes	Yes
Security3 differ
Cable lock slot	Yes	Yes
Fingerprint readerDiffers	Yes	No
Trusted Platform Module (TPM)Differs	Yes	No
Password protection	Yes	Yes
Password protection typeDiffers	HDD, Power on, Supervisor	HDD, Supervisor
Certificatesidentical
Compliance certificates	RoHS	RoHS
CertificationKnown for one	MIL-STD-810G	Unknown — not stated by the source
Sustainability1 differ
Sustainability certificatesDiffers	ENERGY STAR	EPEAT Silver, ENERGY STAR
Weight & dimensions3 differ
WeightDiffers	2.67 kg	4.3 kg
WidthDiffers	377.4 mm	425 mm
DepthDiffers	252.3 mm	315 mm
Height (front)Known for one	2.45 cm	Unknown — not stated by the source
Height (rear)Known for one	2.94 cm	Unknown — not stated by the source
HeightKnown for one	Unknown — not stated by the source	36 mm
Packaging contentidentical
AC adapter included	Yes	Yes
Docking station includedKnown for one	Yes	Unknown — not stated by the source
Manual	Yes	Yes
Power cord included	Yes	Yes
Quick start guideKnown for one	Yes	Unknown — not stated by the source
Bag includedKnown for one	Unknown — not stated by the source	Yes

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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