Product comparison · 2 laptops

Dell 15R (3537) vs Dell 15R (7520)

150specifications compared
53differ
97identical
25known for one product only

Key differences

Processor family
- 15R (3537):Intel® Core™ i5
- 15R (7520):Intel® Core™ i7
Processor generation
- 15R (3537):4th gen Intel® Core™ i5
- 15R (7520):3rd gen Intel® Core™ i7
Processor model
- 15R (3537):i5-4200U
- 15R (7520):i7-3632QM
Processor cores
- 15R (3537):2
- 15R (7520):4
Processor threads
- 15R (3537):4
- 15R (7520):8
Processor boost frequency
- 15R (3537):2.6 GHz
- 15R (7520):3.2 GHz
Processor frequency
- 15R (3537):1.6 GHz
- 15R (7520):2.2 GHz
Processor cache
- 15R (3537):3 MB
- 15R (7520):6 MB

Side by side

Differences highlightedShow differences only

Comparison of 15R (3537), 15R (7520)
175 specifications	A Dell 15R (3537)View product	B Dell 15R (7520)View product
Displayidentical
Display brightnessKnown for one	Unknown — not stated by the source	200 cd/m²
Processor17 differ
Processor familyDiffers	Intel® Core™ i5	Intel® Core™ i7
Processor generationDiffers	4th gen Intel® Core™ i5	3rd gen Intel® Core™ i7
Processor modelDiffers	i5-4200U	i7-3632QM
Processor coresDiffers	2	4
Processor threadsDiffers	4	8
Processor boost frequencyDiffers	2.6 GHz	3.2 GHz
Processor frequencyDiffers	1.6 GHz	2.2 GHz
System bus rateKnown for one	Unknown — not stated by the source	5 GT/s
Processor cacheDiffers	3 MB	6 MB
Processor socketDiffers	BGA 1168	Socket 1224
Processor seriesDiffers	Intel Core i5-4200 Mobile series	Intel Core i7-3600 Mobile series
Processor codenameDiffers	Haswell	Ivy Bridge
Bus typeDiffers	DMI2	DMI
Thermal Design Power (TDP)Differs	15 W	35 W
TjunctionDiffers	100 °C	105 °C
Maximum number of PCI Express lanesDiffers	12	16
PCI Express configurationsDiffers	1x4, 2x4	1x16, 2x8, 1x8+2x4
PCI Express slots versionDiffers	2.0	3.0
CPU multiplier (bus/core ratio)Known for one	Unknown — not stated by the source	22
SteppingKnown for one	C0	Unknown — not stated by the source
Memory2 differ
Internal memoryDiffers	6 GB	8 GB
Memory layout (slots x size)Differs	1 x 2 + 1 x 4 GB	2 x 4 GB
Storage4 differ
Total storage capacityDiffers	750 GB	1 TB
HDD capacityDiffers	750 GB	1 TB
Optical drive typeDiffers	DVD-RW	DVD±RW
Compatible memory cardsDiffers	Memory Stick (MS), MMC, MMC+, MS PRO, MSXC, SD, SDHC, SDXC	Memory Stick (MS), MMC, MMC+, MS PRO, SD, SDHC, SDXC, xD
Graphics6 differ
Discrete graphics cardDiffers	No	Yes
Discrete graphics card modelDiffers	Not available	AMD Radeon HD 7730M
Discrete graphics card memoryKnown for one	Unknown — not stated by the source	2 GB
Discrete graphics memory typeKnown for one	Unknown — not stated by the source	GDDR3
On-board graphics card modelDiffers	Intel® HD Graphics 4400	Intel® HD Graphics 4000
On-board graphics card base frequencyDiffers	200 MHz	650 MHz
On-board graphics card dynamic frequency (max)Differs	1000 MHz	1150 MHz
On-board graphics card IDDiffers	0xA16	0x166
Number of discrete graphics cards installedKnown for one	Unknown — not stated by the source	1
Maximum on-board graphics card memoryKnown for one	1.74 GB	Unknown — not stated by the source
On-board graphics card DirectX versionKnown for one	12	Unknown — not stated by the source
Audioidentical
Speaker powerKnown for one	Unknown — not stated by the source	2 W
Network1 differ
Ethernet LAN data ratesDiffers	10,100 Mbit/s	10,100,1000 Mbit/s
Integrated 4G WiMAXKnown for one	Unknown — not stated by the source	Yes
Ports & interfaces5 differ
USB 2.0 ports quantityDiffers	2	0
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantityDiffers	2	4
VGA (D-Sub) ports quantityDiffers	0	1
Headphone outputsDiffers	0	1
Microphone inDiffers	No	Yes
HDMI versionKnown for one	1.4a	Unknown — not stated by the source
Combo headphone/mic portKnown for one	Yes	Unknown — not stated by the source
Total number of SATA connectorsKnown for one	4	Unknown — not stated by the source
Number of SATA III connectorsKnown for one	4	Unknown — not stated by the source
Performanceidentical
Motherboard chipsetKnown for one	Unknown — not stated by the source	Intel HM77 Express
Keyboardidentical
Full-size keyboardKnown for one	Unknown — not stated by the source	Yes
Software1 differ
Operating system installedDiffers	Windows 8.1	Windows 8
Processor special features10 differ
Graphics & IMC lithographyKnown for one	Unknown — not stated by the source	22 nm
Intel Dual Display Capable TechnologyDiffers	No	Yes
Intel FDI TechnologyDiffers	No	Yes
Intel Fast Memory AccessDiffers	No	Yes
Intel Flex Memory AccessDiffers	No	Yes
Intel Rapid Storage TechnologyDiffers	Yes	No
Intel Smart Connect TechnologyDiffers	Yes	No
Intel® High Definition Audio (Intel® HD Audio)Differs	Yes	No
Intel® Smart CacheKnown for one	Unknown — not stated by the source	Yes
Processor ARK IDDiffers	75459	71458
Processor package sizeDiffers	40 x 24 x 1.5 mm	37.5 x 37.5 (rPGA988B)
Supported instruction setsDiffers	AVX 2.0	AVX
Intel ME Firmware VersionKnown for one	9.5	Unknown — not stated by the source
Intel Smart Connect Technology versionKnown for one	1.00	Unknown — not stated by the source
Intel TSX-NIKnown for one	No	Unknown — not stated by the source
Intel TSX-NI versionKnown for one	0.00	Unknown — not stated by the source
Processor codeKnown for one	SR170	Unknown — not stated by the source
Battery2 differ
Number of battery cellsDiffers	4	6
Battery capacityDiffers	40 Wh	48 Wh
Poweridentical
AC adapter powerKnown for one	Unknown — not stated by the source	90 W
Weight & dimensions5 differ
WeightDiffers	2.25 kg	2.77 kg
WidthDiffers	379 mm	378 mm
DepthDiffers	259 mm	252 mm
Height (front)Differs	2.49 cm	3.03 cm
Height (rear)Differs	2.53 cm	3.41 cm

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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