Product comparison · 2 all-in-one pcs/workstations

Lenovo M820z + Preferred Pro II USB QWERTZ vs Lenovo V540 + Preferred Pro II USB QWERTZ

146specifications compared
51differ
95identical
35known for one product only

Key differences

The Lenovo M820z + Preferred Pro II USB QWERTZ has 1 th gen Intel® Core™ i5 more processor generation than the Lenovo V540 + Preferred Pro II USB QWERTZ (9th gen Intel® Core™ i5 vs 8th gen Intel® Core™ i5). The Lenovo M820z + Preferred Pro II USB QWERTZ has 2 more processor cores than the Lenovo V540 + Preferred Pro II USB QWERTZ (6 vs 4). The Lenovo V540 + Preferred Pro II USB QWERTZ has 2 more processor threads than the Lenovo M820z + Preferred Pro II USB QWERTZ (8 vs 6). Only the Lenovo M820z + Preferred Pro II USB QWERTZ has microphone in. Only the Lenovo V540 + Preferred Pro II USB QWERTZ has Intel® Hyper Threading Technology (Intel® HT Technology).

Display diagonal
- M820z + Preferred Pro II USB QWERTZ:54.6 cm (21.5")
- V540 + Preferred Pro II USB QWERTZ:60.5 cm (23.8")
Processor generation
- M820z + Preferred Pro II USB QWERTZ:9th gen Intel® Core™ i5
- V540 + Preferred Pro II USB QWERTZ:8th gen Intel® Core™ i5
Processor model
- M820z + Preferred Pro II USB QWERTZ:i5-9400
- V540 + Preferred Pro II USB QWERTZ:i5-8265U
Processor cores
- M820z + Preferred Pro II USB QWERTZ:6
- V540 + Preferred Pro II USB QWERTZ:4
Processor threads
- M820z + Preferred Pro II USB QWERTZ:6
- V540 + Preferred Pro II USB QWERTZ:8
Processor boost frequency
- M820z + Preferred Pro II USB QWERTZ:4.1 GHz
- V540 + Preferred Pro II USB QWERTZ:3.9 GHz
Processor frequency
- M820z + Preferred Pro II USB QWERTZ:2.9 GHz
- V540 + Preferred Pro II USB QWERTZ:1.6 GHz
Processor cache
- M820z + Preferred Pro II USB QWERTZ:9 MB
- V540 + Preferred Pro II USB QWERTZ:6 MB

Side by side

Differences highlightedShow differences only

Comparison of M820z + Preferred Pro II USB QWERTZ, V540 + Preferred Pro II USB QWERTZ
181 specifications	A Lenovo M820z + Preferred Pro II USB QWERTZ View product	B Lenovo V540 + Preferred Pro II USB QWERTZ View product
Display1 differ
Display diagonalDiffers	54.6 cm (21.5")	60.5 cm (23.8")
Touch technologyKnown for one	Multi-touch	Unknown — not stated by the source
Processor17 differ
Processor generationDiffers	9th gen Intel® Core™ i5	8th gen Intel® Core™ i5
Processor modelDiffers	i5-9400	i5-8265U
Processor coresDiffers	6	4
Processor threadsDiffers	6	8
Processor boost frequencyDiffers	4.1 GHz	3.9 GHz
Processor frequencyDiffers	2.9 GHz	1.6 GHz
Processor cacheDiffers	9 MB	6 MB
Processor socketDiffers	LGA 1151 (Socket H4)	BGA 1528
System bus rateDiffers	8 GT/s	4 GT/s
Thermal Design Power (TDP)Differs	65 W	15 W
Configurable TDP-up frequencyKnown for one	Unknown — not stated by the source	1.8 GHz
Configurable TDP-upKnown for one	Unknown — not stated by the source	25 W
Configurable TDP-down frequencyKnown for one	Unknown — not stated by the source	0.8 GHz
Configurable TDP-downKnown for one	Unknown — not stated by the source	10 W
Bus typeDiffers	DMI3	OPI
PCI Express configurationsDiffers	1x8+2x4, 1x16, 2x8	1x4, 2x2
Processor codenameDiffers	Coffee Lake	Whiskey Lake
Maximum internal memory supported by processorDiffers	128 GB	32 GB
Memory types supported by processorDiffers	DDR4-SDRAM	DDR4-SDRAM, LPDDR3-SDRAM
Memory clock speeds supported by processorDiffers	2666 MHz	2133 MHz
Memory bandwidth supported by processor (max)Differs	41.6 GB/s	37.5 GB/s
Conflict-Free processorKnown for one	Yes	Unknown — not stated by the source
Memory channels supported by processorKnown for one	Dual	Unknown — not stated by the source
ECC supported by processorKnown for one	No	Unknown — not stated by the source
Memory1 differ
Memory layout (slots x size)Differs	1 x 8 GB	2 x 4 GB
Storage2 differ
NVMeKnown for one	Unknown — not stated by the source	Yes
SSD interfaceDiffers	PCI Express	NVMe, PCI Express
Optical drive typeDiffers	DVD±RW	No
Compatible memory cardsKnown for one	Unknown — not stated by the source	SD, SDHC, SDXC
Number of storage drives installedKnown for one	1	Unknown — not stated by the source
Graphics5 differ
On-board graphics card modelDiffers	Intel® UHD Graphics 630	Intel® UHD Graphics
Maximum on-board graphics card memoryDiffers	64 GB	32 GB
On-board graphics card base frequencyDiffers	350 MHz	300 MHz
On-board graphics card dynamic frequency (max)Differs	1050 MHz	1100 MHz
On-board graphics card IDDiffers	0X3E98/x92	0x3EA0
Number of execution unitsKnown for one	23	Unknown — not stated by the source
Audio1 differ
RMS rated powerDiffers	4 W	6 W
Audio chipKnown for one	Unknown — not stated by the source	Realtek ALC233
Audio systemKnown for one	Unknown — not stated by the source	HD
Camera2 differ
Camera HD typeDiffers	Full HD	HD
Camera signal formatDiffers	1080p	720p
Network3 differ
Wi-Fi standardsDiffers	802.11a, Wi-Fi 5 (802.11ac), 802.11b, 802.11g, Wi-Fi 4 (802.11n)	802.11a, 802.11b, 802.11g, Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac)
WLAN controller modelDiffers	Intel Dual Band Wireless-AC 8265	Intel Dual Band Wireless-AC 9560
Bluetooth versionDiffers	4.1	4.0
Ports & interfaces6 differ
USB 2.0 ports quantityDiffers	0	4
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantityDiffers	4	0
USB 3.2 Gen 1 (3.1 Gen 1) Type-C ports quantityDiffers	1	0
USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantityDiffers	1	2
HDMI input ports quantityKnown for one	Unknown — not stated by the source	1
HDMI output ports quantityKnown for one	Unknown — not stated by the source	1
HDMI ports quantityDiffers	0	2
Microphone inDiffers	Yes	No
DC-in jackKnown for one	Unknown — not stated by the source	Yes
DisplayPorts quantityKnown for one	1	Unknown — not stated by the source
Designidentical
Cable lock slotKnown for one	Unknown — not stated by the source	Yes
On/off buttonKnown for one	Unknown — not stated by the source	Yes
Performanceidentical
HDD user passwordKnown for one	Unknown — not stated by the source	Yes
BIOS passwordKnown for one	Yes	Unknown — not stated by the source
Processor special features3 differ
Intel Flex Memory AccessKnown for one	Unknown — not stated by the source	Yes
Intel Smart Response Technology versionKnown for one	Unknown — not stated by the source	1.00
Intel® Hyper Threading Technology (Intel® HT Technology)Differs	No	Yes
Intel® My WiFi Technology (Intel® MWT)Known for one	Unknown — not stated by the source	Yes
Intel® Smart Response TechnologyKnown for one	Unknown — not stated by the source	Yes
Processor ARK IDDiffers	134898	149088
Processor package sizeDiffers	37.5 x 37.5 mm	46x24 mm
Intel® InTru™ 3D TechnologyKnown for one	Yes	Unknown — not stated by the source
ScalabilityKnown for one	1S	Unknown — not stated by the source
Thermal solution specificationKnown for one	PCG 2015C	Unknown — not stated by the source
Power1 differ
AC adapter powerDiffers	150 W	65 W
AC adapter frequencyKnown for one	Unknown — not stated by the source	50/60 Hz
AC adapter input voltageKnown for one	Unknown — not stated by the source	100 - 240 V
Weight & dimensions8 differ
Width (with stand)Differs	491 mm	541 mm
Depth (with stand)Differs	252 mm	214 mm
Height (with stand)Differs	416 mm	450 mm
Weight (with stand)Differs	7.65 kg	6.4 kg
Width (without stand)Differs	491 mm	541 mm
Depth (without stand)Differs	49 mm	59.7 mm
Height (without stand)Differs	342 mm	337 mm
Weight (without stand)Differs	5.05 kg	4.8 kg
Sustainability1 differ
Sustainability certificatesDiffers	ENERGY STAR	Blue Angel, EPEAT Silver, ENERGY STAR
Packaging contentidentical
Mouse includedKnown for one	Yes	Unknown — not stated by the source
Power cord includedKnown for one	Yes	Unknown — not stated by the source
ManualKnown for one	Yes	Unknown — not stated by the source
Certificatesidentical
Compliance certificatesKnown for one	RoHS	Unknown — not stated by the source

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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