Product comparison · 2 laptops

Dell Inspiron 7557 Intel® Core™ i7 i7-4720HQ Laptop vs Dell XPS 15 9575 Intel® Core™ i7 i7-8705G Hybrid (2-in-1)

137specifications compared
58differ
79identical
91known for one product only

Key differences

Product type
- Inspiron 7557 Intel® Core™ i7 i7-4720HQ Laptop:Laptop
- XPS 15 9575 Intel® Core™ i7 i7-8705G Hybrid (2-in-1):Hybrid (2-in-1)
Product colour
- Inspiron 7557 Intel® Core™ i7 i7-4720HQ Laptop:Black
- XPS 15 9575 Intel® Core™ i7 i7-8705G Hybrid (2-in-1):Silver
Form factor
- Inspiron 7557 Intel® Core™ i7 i7-4720HQ Laptop:Clamshell
- XPS 15 9575 Intel® Core™ i7 i7-8705G Hybrid (2-in-1):Convertible (Folder)
Display resolution
- Inspiron 7557 Intel® Core™ i7 i7-4720HQ Laptop:1920 x 1080 pixels
- XPS 15 9575 Intel® Core™ i7 i7-8705G Hybrid (2-in-1):3840 x 2160 pixels
Touchscreen
- Inspiron 7557 Intel® Core™ i7 i7-4720HQ Laptop:No
- XPS 15 9575 Intel® Core™ i7 i7-8705G Hybrid (2-in-1):Yes
HD type
- Inspiron 7557 Intel® Core™ i7 i7-4720HQ Laptop:Full HD
- XPS 15 9575 Intel® Core™ i7 i7-8705G Hybrid (2-in-1):4K Ultra HD
Pixel pitch
- Inspiron 7557 Intel® Core™ i7 i7-4720HQ Laptop:0.897 x 0.897 mm
- XPS 15 9575 Intel® Core™ i7 i7-8705G Hybrid (2-in-1):0.08964 x 0.08964 mm
Processor generation
- Inspiron 7557 Intel® Core™ i7 i7-4720HQ Laptop:4th gen Intel® Core™ i7
- XPS 15 9575 Intel® Core™ i7 i7-8705G Hybrid (2-in-1):8th gen Intel® Core™ i7

Side by side

Differences highlightedShow differences only

Comparison of 7557, 9575
228 specifications	A Dell Inspiron 7557 Intel® Core™ i7 i7-4720HQ Laptop Model 7557 View product	B Dell XPS 15 9575 Intel® Core™ i7 i7-8705G Hybrid (2-in-1) Model 9575 View product
Design3 differ
Product typeDiffers	Laptop	Hybrid (2-in-1)
Product colourDiffers	Black	Silver
Form factorDiffers	Clamshell	Convertible (Folder)
Colour nameKnown for one	Unknown — not stated by the source	Silver
Housing materialKnown for one	Unknown — not stated by the source	Aluminium, Carbon fibre
Display4 differ
Display diagonal	39.6 cm (15.6")	39.6 cm (15.6")
Display resolutionDiffers	1920 x 1080 pixels	3840 x 2160 pixels
TouchscreenDiffers	No	Yes
HD typeDiffers	Full HD	4K Ultra HD
LED backlight	Yes	Yes
Native aspect ratio	16:9	16:9
Display surface	Matt	Matt
Pixel pitchDiffers	0.897 x 0.897 mm	0.08964 x 0.08964 mm
Touchscreen typeKnown for one	Unknown — not stated by the source	Capacitive
Touch technologyKnown for one	Unknown — not stated by the source	Multi-touch
Display bezel technologyKnown for one	Unknown — not stated by the source	InfinityEdge
Processor14 differ
Processor manufacturer	Intel	Intel
Processor family	Intel® Core™ i7	Intel® Core™ i7
Processor generationDiffers	4th gen Intel® Core™ i7	8th gen Intel® Core™ i7
Processor modelDiffers	i7-4720HQ	i7-8705G
Processor cores	4	4
Processor threads	8	8
Processor boost frequencyDiffers	3.6 GHz	4.1 GHz
Processor frequencyDiffers	2.6 GHz	3.1 GHz
System bus rateDiffers	5 GT/s	8 GT/s
Processor cacheDiffers	6 MB	8 MB
Processor cache typeDiffers	L3	Smart Cache
Processor socketDiffers	BGA 1364	BGA 2270
Processor lithographyDiffers	22 nm	14 nm
Processor operating modes	64-bit	64-bit
Processor seriesKnown for one	Intel Core i7-4700 Mobile series	Unknown — not stated by the source
Processor codenameDiffers	Haswell	Kaby Lake G
Bus typeDiffers	DMI2	DMI
FSB ParityKnown for one	No	Unknown — not stated by the source
SteppingKnown for one	C0	Unknown — not stated by the source
Thermal Design Power (TDP)Differs	47 W	65 W
Tjunction	100 °C	100 °C
Maximum number of PCI Express lanesDiffers	16	8
PCI Express configurationsDiffers	1x16, 2x8, 1x8+2x4	2x4
PCI Express slots version	3.0	3.0
ECC supported by processor	No	No
Memory4 differ
Internal memoryDiffers	8 GB	16 GB
Internal memory typeDiffers	DDR3L-SDRAM	DDR4-SDRAM
Memory clock speedDiffers	1600 MHz	2400 MHz
Memory form factorDiffers	SO-DIMM	On-board
Memory layout (slots x size)Known for one	1 x 8 GB	Unknown — not stated by the source
Memory slotsKnown for one	2x SO-DIMM	Unknown — not stated by the source
Maximum internal memory	16 GB	16 GB
Maximum internal memory (64-bit)	16 GB	16 GB
Storage3 differ
Total storage capacityDiffers	1 TB	512 GB
Storage mediaDiffers	HDD	SSD
Number of HDDs installedKnown for one	1	Unknown — not stated by the source
HDD capacityKnown for one	1 TB	Unknown — not stated by the source
HDD speedKnown for one	5400 RPM	Unknown — not stated by the source
HDD sizeKnown for one	2.5"	Unknown — not stated by the source
Optical drive type	No	No
Card reader integrated	Yes	Yes
Compatible memory cardsDiffers	MMC, SD	MicroSD (TransFlash)
Number of SSDs installedKnown for one	Unknown — not stated by the source	1
SSD capacityKnown for one	Unknown — not stated by the source	512 GB
SSD interfaceKnown for one	Unknown — not stated by the source	M.2
Graphics8 differ
On-board graphics cardKnown for one	Yes	Unknown — not stated by the source
Discrete graphics card	Yes	Yes
Discrete graphics card modelDiffers	NVIDIA® GeForce® GTX 960M	AMD Radeon RX Vega M GL
Discrete graphics card memory	4 GB	4 GB
Discrete graphics memory typeDiffers	GDDR5	HBM2
On-board graphics card familyKnown for one	Intel® HD Graphics	Unknown — not stated by the source
On-board graphics card modelDiffers	Intel® HD Graphics 4600	Intel® HD Graphics 630
Maximum on-board graphics card memoryDiffers	1.74 GB	64 GB
On-board graphics card base frequencyDiffers	400 MHz	350 MHz
On-board graphics card dynamic frequency (max)Differs	1200 MHz	1100 MHz
On-board graphics card DirectX versionDiffers	11.2/12	12.0
On-board graphics card OpenGL versionDiffers	4.3	4.4
On-board graphics card IDKnown for one	0x416	Unknown — not stated by the source
Number of discrete graphics cards installed	1	1
Number of discrete graphics cards supportedKnown for one	1	Unknown — not stated by the source
Graphics card Open GL supportKnown for one	Yes	Unknown — not stated by the source
CUDAKnown for one	Yes	Unknown — not stated by the source
CUDA coresKnown for one	640	Unknown — not stated by the source
Audioidentical
Audio system	MaxxAudio Pro	MaxxAudio Pro
Number of built-in speakers	2	2
Speakers manufacturer	Waves	Waves
Speaker power	2 W	2 W
Built-in subwooferKnown for one	Yes	Unknown — not stated by the source
Built-in microphone	Yes	Yes
Cameraidentical
Front camera	Yes	Yes
Front camera resolution (numeric)	0.92 MP	0.92 MP
Front camera resolution	1280 x 720 pixels	1280 x 720 pixels
Video capturing speed	30 fps	30 fps
Front camera HD typeKnown for one	Unknown — not stated by the source	HD
Front camera signal formatKnown for one	Unknown — not stated by the source	720p
Optical driveidentical
LightScribeKnown for one	No	Unknown — not stated by the source
Network2 differ
Wi-Fi	Yes	Yes
Wi-Fi standards	Wi-Fi 5 (802.11ac)	Wi-Fi 5 (802.11ac)
Ethernet LANDiffers	Yes	No
Ethernet LAN data ratesKnown for one	10,100,1000 Mbit/s	Unknown — not stated by the source
Bluetooth	Yes	Yes
Bluetooth versionDiffers	4.0	4.1
Antenna typeKnown for one	Unknown — not stated by the source	2x2
WLAN controller modelKnown for one	Unknown — not stated by the source	Killer Wireless-AC 1435
Ports & interfaces2 differ
USB 2.0 ports quantity	0	0
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantityDiffers	3	0
Ethernet LAN (RJ-45) portsKnown for one	1	Unknown — not stated by the source
HDMI ports quantityDiffers	1	0
HDMI versionKnown for one	1.4a	Unknown — not stated by the source
DisplayPorts quantity	0	0
DVI portKnown for one	No	Unknown — not stated by the source
VGA (D-Sub) ports quantityKnown for one	0	Unknown — not stated by the source
Thunderbolt ports quantityKnown for one	0	Unknown — not stated by the source
Headphone outputsKnown for one	0	Unknown — not stated by the source
S/PDIF out portKnown for one	No	Unknown — not stated by the source
Combo headphone/mic port	Yes	Yes
Microphone inKnown for one	No	Unknown — not stated by the source
Docking connectorKnown for one	No	Unknown — not stated by the source
ExpressCard slotKnown for one	No	Unknown — not stated by the source
CardBus PCMCIA slots quantityKnown for one	0	Unknown — not stated by the source
CardBus PCMCIA slot typeKnown for one	No	Unknown — not stated by the source
SmartCard slotKnown for one	No	Unknown — not stated by the source
USB Sleep-and-ChargeKnown for one	Yes	Unknown — not stated by the source
USB Sleep-and-Charge portsKnown for one	1	Unknown — not stated by the source
USB 3.2 Gen 1 (3.1 Gen 1) Type-C ports quantityKnown for one	Unknown — not stated by the source	2
USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantityKnown for one	Unknown — not stated by the source	0
USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantityKnown for one	Unknown — not stated by the source	0
Thunderbolt 3 ports quantityKnown for one	Unknown — not stated by the source	2
USB Type-C DisplayPort Alternate ModeKnown for one	Unknown — not stated by the source	Yes
Number of Thunderbolt 3 ports with PowerShare supportKnown for one	Unknown — not stated by the source	2
Keyboard1 differ
Pointing device	Touchpad	Touchpad
Numeric keypadDiffers	Yes	No
Full-size keyboardKnown for one	Yes	Unknown — not stated by the source
Windows keys	Yes	Yes
Keyboard backlitKnown for one	Unknown — not stated by the source	Yes
Keyboard layoutKnown for one	Unknown — not stated by the source	QWERTY
Software1 differ
Operating system installedDiffers	Windows 8.1	Windows 10 Home
Operating system architecture	64-bit	64-bit
Drivers included	Yes	Yes
Trial softwareKnown for one	Unknown — not stated by the source	Microsoft Office
Bundled softwareKnown for one	Unknown — not stated by the source	McAfee LiveSafe
Processor special features6 differ
Intel® Wireless Display (Intel® WiDi)Known for one	Yes	Unknown — not stated by the source
CPU configuration (max)	1	1
Embedded options available	No	No
Enhanced Intel SpeedStep Technology	Yes	Yes
Execute Disable Bit	Yes	Yes
Idle States	Yes	Yes
Intel 64	Yes	Yes
Intel Clear Video TechnologyKnown for one	No	Unknown — not stated by the source
Intel Demand Based SwitchingKnown for one	No	Unknown — not stated by the source
Intel Dual Display Capable TechnologyKnown for one	No	Unknown — not stated by the source
Intel Enhanced Halt StateKnown for one	Yes	Unknown — not stated by the source
Intel FDI TechnologyKnown for one	Yes	Unknown — not stated by the source
Intel Fast Memory AccessKnown for one	No	Unknown — not stated by the source
Intel Flex Memory AccessDiffers	No	Yes
Intel HD GraphicsKnown for one	Yes	Unknown — not stated by the source
Intel Identity Protection Technology versionKnown for one	1.00	Unknown — not stated by the source
Intel Rapid Storage TechnologyKnown for one	No	Unknown — not stated by the source
Intel Secure Key Technology versionKnown for one	1.00	Unknown — not stated by the source
Intel TSX-NI	No	No
Intel TSX-NI versionKnown for one	0.00	Unknown — not stated by the source
Intel Trusted Execution Technology	No	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® Anti-Theft Technology (Intel® AT)Known for one	Yes	Unknown — not stated by the source
Intel® Built-in Visuals TechnologyKnown for one	Yes	Unknown — not stated by the source
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)	Yes	Yes
Intel® InTru™ 3D Technology	Yes	Yes
Intel® Insider™Known for one	Yes	Unknown — not stated by the source
Intel® My WiFi Technology (Intel® MWT)Differs	No	Yes
Intel® Quick Sync Video Technology	Yes	Yes
Intel® Secure Key	Yes	Yes
Intel® Smart CacheKnown for one	Yes	Unknown — not stated by the source
Intel® Turbo Boost TechnologyDiffers	No	2.0
Intel® Virtualization Technology (Intel® VT)Known for one	VT-x, VT-d	Unknown — not stated by the source
Processor ARK IDDiffers	78934	130411
Processor codeKnown for one	SR1Q8	Unknown — not stated by the source
Processor package sizeDiffers	37.5 x 32 x 1.6 mm	31 x 58.5 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 processorKnown for one	Yes	Unknown — not stated by the source
Intel Software Guard Extensions (Intel SGX)Known for one	Unknown — not stated by the source	Yes
Intel Stable Image Platform Program (SIPP)Known for one	Unknown — not stated by the source	No
Intel® OS GuardKnown for one	Unknown — not stated by the source	Yes
Intel® Smart Response TechnologyKnown for one	Unknown — not stated by the source	Yes
Battery2 differ
Battery technology	Lithium-Ion (Li-Ion)	Lithium-Ion (Li-Ion)
Number of battery cells	6	6
Battery capacityDiffers	74 Wh	75 Wh
Battery voltageDiffers	11.1 V	11.4 V
Battery life (max)Known for one	7.51 h	Unknown — not stated by the source
Battery recharge time	4 h	4 h
Battery charge indicatorKnown for one	Unknown — not stated by the source	Yes
Power2 differ
AC adapter power	130 W	130 W
AC adapter frequency	50 - 60 Hz	50 - 60 Hz
AC adapter input voltage	100 - 240 V	100 - 240 V
AC adapter output currentDiffers	6.7 A	6.5 A
AC adapter output voltageDiffers	19.5 V	20 V
DC-in jackKnown for one	Yes	Unknown — not stated by the source
USB Power Delivery (USB PD)Known for one	Unknown — not stated by the source	Yes
Security1 differ
Cable lock slot	Yes	Yes
Cable lock slot typeDiffers	Kensington	Noble
Password protection	Yes	Yes
Fingerprint readerKnown for one	Unknown — not stated by the source	Yes
Operational conditionsidentical
Operating temperature (T-T)	0 - 35 °C	0 - 35 °C
Storage temperature (T-T)	-40 - 65 °C	-40 - 65 °C
Operating relative humidity (H-H)	10 - 90%	10 - 90%
Storage relative humidity (H-H)	0 - 95%	0 - 95%
Operating altitude	-15.2 - 3048 m	-15.2 - 3048 m
Non-operating altitude	-15.2 - 10668 m	-15.2 - 10668 m
Operating shock	110 G	110 G
Non-operating shock	160 G	160 G
Operating vibration	0.66 G	0.66 G
Non-operating vibration	1.3 G	1.3 G
Sustainability1 differ
Sustainability certificatesDiffers	EPEAT Silver, ENERGY STAR	EPEAT Gold, ENERGY STAR
Weight & dimensions4 differ
WeightDiffers	2.59 kg	2 kg
WidthDiffers	383 mm	354 mm
DepthDiffers	265 mm	235 mm
HeightDiffers	25.3 mm	16 mm
Packaging contentidentical
AC adapter included	Yes	Yes
Manual	Yes	Yes
Power cord included	Yes	Yes
Warranty cardKnown for one	Yes	Unknown — not stated by the source
Other featuresidentical
3DKnown for one	No	Unknown — not stated by the source
Intel segment taggingKnown for one	Home office	Unknown — not stated by the source
Machined aluminium designKnown for one	Unknown — not stated by the source	Yes
USB Power Delivery revisionKnown for one	Unknown — not stated by the source	2.0
On/off buttonKnown 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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