Product comparison · 2 pcs/workstations

Acer Aspire M7811 vs Lenovo ThinkStation E20 + ThinkVision L2440p

87specifications compared
34differ
53identical
33known for one product only

Key differences

The Acer Aspire M7811 has 2 more processor cores than the Lenovo ThinkStation E20 + ThinkVision L2440p (4 vs 2). The Acer Aspire M7811 has 4 more processor threads than the Lenovo ThinkStation E20 + ThinkVision L2440p (8 vs 4). The Lenovo ThinkStation E20 + ThinkVision L2440p has 0.4 GHz more processor frequency than the Acer Aspire M7811 (3.2 GHz vs 2.8 GHz). Only the Acer Aspire M7811 has card reader integrated. Only the Lenovo ThinkStation E20 + ThinkVision L2440p has on-board graphics card.

Processor family
- Aspire M7811:Intel® Core™ i7
- ThinkStation E20 + ThinkVision L2440p:Intel® Core™ i5
Processor generation
- Aspire M7811:Intel® Core™ i7
- ThinkStation E20 + ThinkVision L2440p:Intel® Core™ i5
Processor model
- Aspire M7811:i7-860
- ThinkStation E20 + ThinkVision L2440p:i5-650
Processor cores
- Aspire M7811:4
- ThinkStation E20 + ThinkVision L2440p:2
Processor threads
- Aspire M7811:8
- ThinkStation E20 + ThinkVision L2440p:4
Processor frequency
- Aspire M7811:2.8 GHz
- ThinkStation E20 + ThinkVision L2440p:3.2 GHz
Processor cache
- Aspire M7811:8 MB
- ThinkStation E20 + ThinkVision L2440p:4 MB
Processor lithography
- Aspire M7811:45 nm
- ThinkStation E20 + ThinkVision L2440p:32 nm

Side by side

Differences highlightedShow differences only

Comparison of Aspire M7811, ThinkStation E20 + ThinkVision L2440p
120 specifications	A Acer Aspire M7811 View product	B Lenovo ThinkStation E20 + ThinkVision L2440p View product
Processor16 differ
Processor manufacturer	Intel	Intel
Processor familyDiffers	Intel® Core™ i7	Intel® Core™ i5
Processor generationDiffers	Intel® Core™ i7	Intel® Core™ i5
Processor modelDiffers	i7-860	i5-650
Processor coresDiffers	4	2
Processor threadsDiffers	8	4
Processor boost frequency	3.46 GHz	3.46 GHz
Processor frequencyDiffers	2.8 GHz	3.2 GHz
Processor cacheDiffers	8 MB	4 MB
Processor cache type	Smart Cache	Smart Cache
Bus type	DMI	DMI
FSB Parity	No	No
System bus rate	2.5 GT/s	2.5 GT/s
Processor lithographyDiffers	45 nm	32 nm
Processor operating modes	64-bit	64-bit
Processor seriesDiffers	Intel Core i7-800 Desktop Series	Intel Core i5-600 Desktop Series
Processor codenameDiffers	Lynnfield	Clarkdale
Thermal Design Power (TDP)Differs	95 W	73 W
TcaseDiffers	72.7 °C	72.6 °C
Maximum number of PCI Express lanes	16	16
PCI Express configurations	1x16, 2x8	1x16, 2x8
PCI Express slots version	2.0	2.0
Number of processors installedKnown for one	Unknown — not stated by the source	1
Processor socket	LGA 1156 (Socket H)	LGA 1156 (Socket H)
Number of Processing Die TransistorsDiffers	774 M	382 M
Processing Die sizeDiffers	296 mm²	81 mm²
CPU multiplier (bus/core ratio)Differs	21	24
SteppingKnown for one	Unknown — not stated by the source	C2
Maximum internal memory supported by processor	16 GB	16 GB
Memory types supported by processorDiffers	DDR3-SDRAM	DDR3 1066/1333
Memory bandwidth supported by processor (max)	21 GB/s	21 GB/s
ECC supported by processor	No	No
Processor front side busKnown for one	1333 MHz	Unknown — not stated by the source
Memory clock speeds supported by processorKnown for one	1066,1333 MHz	Unknown — not stated by the source
Memory1 differ
Internal memoryDiffers	6 GB	4 GB
Maximum internal memoryKnown for one	Unknown — not stated by the source	16 GB
Internal memory type	DDR3-SDRAM	DDR3-SDRAM
Memory layout (slots x size)Known for one	Unknown — not stated by the source	2 x 2 GB
Memory clock speedKnown for one	Unknown — not stated by the source	1333 MHz
Memory channels	Dual-channel	Dual-channel
Storage1 differ
Number of HDDs installedKnown for one	Unknown — not stated by the source	1
HDD capacityKnown for one	Unknown — not stated by the source	500 GB
HDD interface	SATA	SATA
HDD speedKnown for one	Unknown — not stated by the source	7200 RPM
Card reader integratedDiffers	Yes	No
Total storage capacityKnown for one	1.5 TB	Unknown — not stated by the source
Floppy drive installedKnown for one	No	Unknown — not stated by the source
Graphics1 differ
On-board graphics cardDiffers	No	Yes
On-board graphics card familyKnown for one	Unknown — not stated by the source	Intel® HD Graphics
On-board graphics card modelKnown for one	Unknown — not stated by the source	Intel® HD Graphics
Number of displays supported (on-board graphics)Known for one	Unknown — not stated by the source	2
On-board graphics card base frequencyKnown for one	Unknown — not stated by the source	733 MHz
Discrete graphics card modelKnown for one	NVIDIA® GeForce® GT 320	Unknown — not stated by the source
Discrete graphics card memoryKnown for one	1 GB	Unknown — not stated by the source
Performance1 differ
Product typeDiffers	PC	Workstation
Motherboard chipsetKnown for one	Unknown — not stated by the source	Intel® 3450
Ports & interfaces2 differ
USB 2.0 ports quantity	8	8
Ethernet LAN (RJ-45) ports	1	1
Headphone outputs	1	1
Microphone in	Yes	Yes
VGA (D-Sub) ports quantity	1	1
PS/2 ports quantity	2	2
Firewire (IEEE 1394) portsDiffers	1	2
eSATA ports quantityKnown for one	Unknown — not stated by the source	1
Serial ports quantityDiffers	0	1
HDMI ports quantityKnown for one	1	Unknown — not stated by the source
DVI portKnown for one	Yes	Unknown — not stated by the source
Parallel ports quantityKnown for one	0	Unknown — not stated by the source
Poweridentical
Power supply typeKnown for one	Unknown — not stated by the source	100 - 240 VAC, 50/60 Hz
Power supplyKnown for one	Unknown — not stated by the source	280 W
Designidentical
Chassis type	Tower	Tower
Software1 differ
Operating system installedDiffers	Windows 7 Home Premium	Windows 7 Professional
Display1 differ
Display includedDiffers	No	Yes
Display diagonalKnown for one	Unknown — not stated by the source	61 cm (24")
ResolutionKnown for one	Unknown — not stated by the source	1920 x 1200 pixels
Processor special features6 differ
CPU configuration (max)	1	1
Embedded options availableDiffers	Yes	No
Enhanced Intel SpeedStep Technology	Yes	Yes
Execute Disable Bit	Yes	Yes
Graphics & IMC lithographyKnown for one	Unknown — not stated by the source	45 nm
Idle States	Yes	Yes
Intel 64	Yes	Yes
Intel Clear Video Technology	No	No
Intel Demand Based Switching	No	No
Intel Dual Display Capable TechnologyDiffers	No	Yes
Intel Enhanced Halt State	Yes	Yes
Intel FDI TechnologyDiffers	No	Yes
Intel Fast Memory Access	No	No
Intel Flex Memory Access	No	No
Intel Rapid Storage Technology	No	No
Intel Trusted Execution Technology	Yes	Yes
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)Differs	No	Yes
Intel® Clear Video HD Technology (Intel® CVT HD)Differs	No	Yes
Intel® Clear Video Technology for Mobile Internet Devices (Intel CVT for MID)	No	No
Intel® InTru™ 3D Technology	No	No
Intel® Insider™	No	No
Intel® Wireless Display (Intel® WiDi)	No	No
Physical Address Extension (PAE)	36 bit	36 bit
Processor ARK IDDiffers	41316	43546
Processor package size	37.5 x 37.5 mm	37.5 x 37.5 mm
Supported instruction sets	SSE4.2	SSE4.2
Thermal Monitoring Technologies	No	No
Intel® Turbo Boost Technology	1.0	1.0
Intel® Hyper Threading Technology (Intel® HT Technology)	Yes	Yes
Intel® Quick Sync Video Technology	No	No
Intel® My WiFi Technology (Intel® MWT)	No	No
Intel® Anti-Theft Technology (Intel® AT)	No	No
Conflict-Free processor	No	No
Audio1 differ
Audio systemDiffers	High Definition Audio 7.1	Realtek ALC662
Weight & dimensions3 differ
WidthDiffers	192 mm	175 mm
DepthDiffers	453 mm	430.8 mm
HeightDiffers	435 mm	425.2 mm
Networkidentical
Ethernet LANKnown for one	Yes	Unknown — not stated by the source
Wi-FiKnown for one	No	Unknown — not stated by the source
Networking featuresKnown for one	Gigabit Ethernet	Unknown — not stated by the source
Packaging contentidentical
Remote control includedKnown for one	No	Unknown — not stated by the source
Other featuresidentical
TV tuner integratedKnown for one	No	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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