Product comparison · 2 laptops

Acer Aspire 5745G Intel® Core™ i5 i5-450M 39.6 cm (15.6") 4 GB DDR3-SDRAM 640 GB Intel HD Windows 7 Home Premium vs Lenovo L512 + 45N6679

120specifications compared
27differ
93identical
15known for one product only

Key differences

Display brightness
- Aspire 5745G Intel® Core™ i5 i5-450M 39.6 cm (15.6") 4 GB DDR3-SDRAM 640 GB Intel HD Windows 7 Home Premium:200 cd/m²
- L512 + 45N6679:220 cd/m²
Processor model
- Aspire 5745G Intel® Core™ i5 i5-450M 39.6 cm (15.6") 4 GB DDR3-SDRAM 640 GB Intel HD Windows 7 Home Premium:i5-450M
- L512 + 45N6679:i5-460M
Processor boost frequency
- Aspire 5745G Intel® Core™ i5 i5-450M 39.6 cm (15.6") 4 GB DDR3-SDRAM 640 GB Intel HD Windows 7 Home Premium:2.66 GHz
- L512 + 45N6679:2.8 GHz
Processor frequency
- Aspire 5745G Intel® Core™ i5 i5-450M 39.6 cm (15.6") 4 GB DDR3-SDRAM 640 GB Intel HD Windows 7 Home Premium:2.4 GHz
- L512 + 45N6679:2.53 GHz
System bus rate
- Aspire 5745G Intel® Core™ i5 i5-450M 39.6 cm (15.6") 4 GB DDR3-SDRAM 640 GB Intel HD Windows 7 Home Premium:4.8 GT/s
- L512 + 45N6679:2.5 GT/s
Processor socket
- Aspire 5745G Intel® Core™ i5 i5-450M 39.6 cm (15.6") 4 GB DDR3-SDRAM 640 GB Intel HD Windows 7 Home Premium:Socket 988
- L512 + 45N6679:BGA 1288
CPU multiplier (bus/core ratio)
- Aspire 5745G Intel® Core™ i5 i5-450M 39.6 cm (15.6") 4 GB DDR3-SDRAM 640 GB Intel HD Windows 7 Home Premium:18
- L512 + 45N6679:19
Internal memory
- Aspire 5745G Intel® Core™ i5 i5-450M 39.6 cm (15.6") 4 GB DDR3-SDRAM 640 GB Intel HD Windows 7 Home Premium:4 GB
- L512 + 45N6679:2 GB

Side by side

Differences highlightedShow differences only

Comparison of 5745G, L512 + 45N6679
135 specifications	A Acer Aspire 5745G Intel® Core™ i5 i5-450M 39.6 cm (15.6") 4 GB DDR3-SDRAM 640 GB Intel HD Windows 7 Home Premium Model 5745G View product	B Lenovo L512 + 45N6679 View product
Display1 differ
Display diagonal	39.6 cm (15.6")	39.6 cm (15.6")
Display resolution	1366 x 768 pixels	1366 x 768 pixels
LED backlight	Yes	Yes
Native aspect ratio	16:9	16:9
Display brightnessDiffers	200 cd/m²	220 cd/m²
Contrast ratio (typical)Known for one	Unknown — not stated by the source	500:1
Processor6 differ
Processor manufacturer	Intel	Intel
Processor family	Intel® Core™ i5	Intel® Core™ i5
Processor generation	4th gen Intel® Core™ i5	4th gen Intel® Core™ i5
Processor modelDiffers	i5-450M	i5-460M
Processor cores	2	2
Processor threads	4	4
Processor boost frequencyDiffers	2.66 GHz	2.8 GHz
Processor frequencyDiffers	2.4 GHz	2.53 GHz
System bus rateDiffers	4.8 GT/s	2.5 GT/s
Processor cache	3 MB	3 MB
Processor cache type	Smart Cache	Smart Cache
Processor socketDiffers	Socket 988	BGA 1288
Processor lithography	32 nm	32 nm
Processor operating modes	64-bit	64-bit
Processor series	Intel Core i5-400 Series	Intel Core i5-400 Series
Processor codename	Arrandale	Arrandale
Bus type	DMI	DMI
FSB Parity	No	No
Stepping	K0	K0
Thermal Design Power (TDP)	35 W	35 W
Tjunction	105 °C	105 °C
Maximum number of PCI Express lanes	16	16
PCI Express configurations	1x16	1x16
PCI Express slots version	2.0	2.0
Number of Processing Die Transistors	382 M	382 M
Processing Die size	81 mm²	81 mm²
CPU multiplier (bus/core ratio)Differs	18	19
ECC supported by processor	No	No
Memory1 differ
Internal memoryDiffers	4 GB	2 GB
Internal memory type	DDR3-SDRAM	DDR3-SDRAM
Memory slots	2x SO-DIMM	2x SO-DIMM
Maximum internal memory	8 GB	8 GB
Memory layout (slots x size)Known for one	2 x 2 GB	Unknown — not stated by the source
Storage3 differ
Total storage capacityDiffers	640 GB	320 GB
HDD interface	SATA	SATA
HDD speed	5400 RPM	5400 RPM
Optical drive typeDiffers	DVD Super Multi DL	DVD-RW
Card reader integrated	Yes	Yes
Compatible memory cardsDiffers	Memory Stick (MS), MMC, MS PRO, SD, xD	Memory Stick (MS), MMC, MS PRO, SD, SDHC, xD
Graphicsidentical
On-board graphics card	Yes	Yes
Graphics card family	Intel	Intel
On-board graphics card family	Intel® HD Graphics	Intel® HD Graphics
On-board graphics card model	Intel® HD Graphics	Intel® HD Graphics
On-board graphics card base frequency	500 MHz	500 MHz
On-board graphics card dynamic frequency (max)	766 MHz	766 MHz
Discrete graphics cardKnown for one	Yes	Unknown — not stated by the source
Discrete graphics card modelKnown for one	Intel HD	Unknown — not stated by the source
Audioidentical
Audio system	High Definition Audio	High Definition Audio
Networkidentical
Wi-Fi	Yes	Yes
Networking features	Gigabit Ethernet	Gigabit Ethernet
Ethernet LAN	Yes	Yes
Bluetooth	No	No
Ports & interfaces2 differ
USB 2.0 ports quantity	4	4
eSATA ports quantityKnown for one	Unknown — not stated by the source	1
Ethernet LAN (RJ-45) ports	1	1
DisplayPorts quantityKnown for one	Unknown — not stated by the source	1
DVI port	No	No
VGA (D-Sub) ports quantity	1	1
Headphone outputs	1	1
S/PDIF out port	No	No
Microphone in	Yes	Yes
Docking connectorDiffers	No	Yes
ExpressCard slotDiffers	No	Yes
CardBus PCMCIA slots quantity	0	0
CardBus PCMCIA slot type	No	No
SmartCard slot	Yes	Yes
Modem (RJ-11) ports	1	1
TV-in portKnown for one	Unknown — not stated by the source	No
TV-out	No	No
HDMI ports quantityKnown for one	1	Unknown — not stated by the source
Performance1 differ
Motherboard chipsetDiffers	Intel® HM55 Express	Intel® QM57 Express
Keyboard1 differ
Pointing deviceDiffers	Touchpad	ThinkPad UltraNav
Software1 differ
Operating system installedDiffers	Windows 7 Home Premium	Windows 7 Professional
Operating system architectureKnown for one	Unknown — not stated by the source	64-bit
Bundled softwareKnown for one	Acer Backup Manager, Acer eRecovery Manager, Acer Launch Manager, Adobe Reader, Adobe Flash Player, eSobi, Google Toolbar, NTI Media Maker, MyWinLocker, Oberon GameZone, WildTangent	Unknown — not stated by the source
Processor special features4 differ
Intel® Wireless Display (Intel® WiDi)	No	No
CPU configuration (max)	1	1
Embedded options available	No	No
Enhanced Intel SpeedStep Technology	Yes	Yes
Execute Disable Bit	Yes	Yes
Graphics & IMC lithography	45 nm	45 nm
Idle States	Yes	Yes
Intel 64	Yes	Yes
Intel Clear Video Technology	Yes	Yes
Intel Demand Based Switching	No	No
Intel Dual Display Capable Technology	Yes	Yes
Intel Enhanced Halt State	Yes	Yes
Intel FDI Technology	Yes	Yes
Intel Fast Memory Access	Yes	Yes
Intel Flex Memory Access	Yes	Yes
Intel Rapid Storage Technology	No	No
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)	No	No
Intel® AES New Instructions (Intel® AES-NI)	No	No
Intel® Anti-Theft Technology (Intel® AT)	No	No
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® InTru™ 3D Technology	No	No
Intel® Insider™	No	No
Intel® My WiFi Technology (Intel® MWT)	No	No
Intel® Quick Sync Video Technology	No	No
Intel® Smart CacheKnown for one	Unknown — not stated by the source	Yes
Intel® Turbo Boost Technology	1.0	1.0
Physical Address Extension (PAE)Differs	36 bit	Yes
Processor ARK IDDiffers	49022	50179
Processor codeDiffers	SLBTZ	SLC22
Processor package size	rPGA 37.5x 37.5, BGA 34x28	rPGA 37.5x 37.5, BGA 34x28
Supported instruction setsDiffers	SSE4.1/4.2	SSE4.1, SSE4.2
Thermal Monitoring Technologies	Yes	Yes
Conflict-Free processor	No	No
Battery1 differ
Number of battery cells	6	6
Battery life (max)Differs	3.5 h	4.7 h
Poweridentical
DC-in jack	Yes	Yes
Security1 differ
Cable lock slot	Yes	Yes
Cable lock slot typeDiffers	Kensington	IBM
Fingerprint readerKnown for one	Unknown — not stated by the source	Yes
Weight & dimensions5 differ
WeightDiffers	2.6 kg	2.56 kg
WidthDiffers	379 mm	380 mm
DepthDiffers	250 mm	247 mm
Height (front)Differs	2.59 cm	3.2 cm
Height (rear)Differs	3.29 cm	3.6 cm
Other featuresidentical
Infrared data port	No	No
Intel segment taggingKnown for one	Unknown — not stated by the source	Home office, Small Business
Supplied AC adapter type	AC	AC
Internal modemKnown for one	Yes	Unknown — not stated by the source
Cameraidentical
Front cameraKnown 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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