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Sony VAIO Z Series VGN-Z51WG/B

alaTest has collected and analyzed 20 reviews of Sony VAIO Z Series VGN-Z51WG/B. The average rating for this product is 4.4/5, compared to an average rating of 4.1/5 for other Laptops for all reviews. Views about the performance and screen are on the whole positive. The design and battery are also mentioned favorably. Many are less positive about the energy efficiency and price.

portability, battery, design, screen, performance

price, energy

We analyzed user and expert ratings, product age and more factors. Compared to other Laptops the Sony VAIO Z Series VGN-Z51WG/B is awarded an overall alaScore™ of 80/100 = Very good quality.

See all Sony Laptops

Review analysis

(Based on 20 reviews)

Expert Reviews  

User Reviews  

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Showing 1 - 13 of 18 Show Reviews: in English | in other languages (2)

Consumer review ( review summary for Sony VAIO Z Series VGN-Z51WG/B


alaTest has collected and analyzed 3 user reviews of Sony VAIO Z Series VGN-Z51WG/B from The average user rating for this product is 4.0/5, compared to an average user rating of 4.0/5 for other Laptops on Reviewers really like the usability and battery. The screen and design are also appreciated.

portability, design, screen, battery, usability

67% of the reviews on give this product a positive rating.

This summary is based on the products: Sony VAIO Z51W GB 13.1-inch Laptop (Core 2 Duo P9700 2.8 GHz Processor, 6 GB RAM, 400 GB HDD, DVDRW, HSDPA, Windows 7 Professional)Sony VAIO Z51W GB 13.1-inch Laptop (Core 2 Duo P9700 2.8 GHz Processor, 6 GB RAM, 400 GB HDD, DVDRW, HSDPA, Windows 7 Professional)

Apr, 2018

Expert review by : Joe Minihane (

Sony Vaio VGN-Z51WG/B review


The top notch Sony Vaio Z series is trying to make its way as the go-to laptop for busy business bods and media junkies. But can this slimline Vaio win us over and convince us to ditch our 13-inch MacBook Pro? Read our Sony Vaio VGN-Z51WG/B review and...

Great looks, epic battery, stunning performance

Old Intel chipset, expensive

The closest a PC laptop gets to matching a MacBook Pro

Jan, 2010

Expert review by : Benny Har-Even (

Sony VGN-Z51WG review


In today's cut-price age is there a place for a full-on no-compromise high cost ultra portable? We weigh up the Sony Vaio VGN-Z51WG in this review.

The Sony VGN-Z51WG is a very fine machine, offering a well built chassis, and great looks, while the excellent performance is married to great battery life. The inevitable high price is its only significant down side.

Oct, 2009

Expert review by (



Light yet powerful, gorgeous yet practical, it's the best all-round ultraportable Sony has produced.

The VGN-Z51WG/B outstrips the best of the netbook and ultraportable worlds for sheer longevity, but is also capable of switching gears and assuming desktop duties with its reserves of power. With Intel's mobile Core i7 looming large on the horizon, it...

Oct, 2009

Consumer review (

Sony Vaio VGN-Z51WG


1. SSD hard drive is very quick, loads programs in a flash 2. Screen has a good clear image 3. Good performance for running Auto CAD and 3d modelling software 4. Being able to switch between Stamina and Speed to extend battery life 5. Keyboard is nice...

Windows 8. It is a shame Sony do not supply Window 7 drivers

Apr, 2013

Consumer review (

Sony Vaio VGN-Z51WG


Build Quality/Design


Feb, 2012

Consumer review (

Sony Vaio VGN-Z51WG


It has a lovely screen, good keyboard and it's not to heavy. The battery is very good compared with other laptops I've owned - but I'd like it to last just a little longer.

May, 2010

Consumer review (

Sony Vaio VGN-Z51WG


Light, fast & great screen

Apr, 2010

Consumer review (

Sony Vaio VGN-Z51WG


Weight, size and layout. Good speed and operability.

Not enough USB ports - OK I know space is an issue, but one more would help. The computer will not allow the use of two monitors when connected to the docking station. When at home I like to use two large monitors (I could do that with my old dell)....

Apr, 2010

Consumer review (

Sony Vaio VGN-Z51WG


Excellent for when you are out and about... with the optional 3G-SIM card inserted you are always connected!!

not much!!!

Mar, 2010

Consumer review (

Sony Vaio VGN-Z51WG


Good design, although network slot hard for big fingers! Keyboard great, performance and graphics excellent. Very pleased

Power cable shorter and I know friends have had difficulty with cable fraying at transformer.

Feb, 2010

Product Specifications


Audio system:HD / HD Audio
Audio system direct 3D sound: Yes


Battery life (max):5.83 / 6
Battery recharge time:3.75


Front camera resolution (numeric):0.3
Video capturing speed:30


Color of product:Black


Aspect Ratio:16:9
Display Diagonal:13.1
Display Resolution:1600 x 900
HD type:HD+

Energy Management

AC adapter input voltage:100 - 240


Discrete graphics adapter:Y
Discrete graphics adapter memory:0.25
Discrete graphics adapter model:NVIDIA GeForce 9300M GS
Maximum graphics adapter memory:2.01 / 3.03


Keyboard Layout:QWERTY
Keyboard type:QWERTY
Pointing device:Touchpad


Internal memory:4 / 6
Internal memory type:DDR3-SDRAM
Maximum internal memory:8
Memory clock speed:1066
Memory layout:1 x 1 + 1 x 2 / 2 x 2
Memory layout (slots x size):1 x 1 + 1 x 2 / 2 x 2
Memory slots:2x SO-DIMM


3G: Yes
Bluetooth: Yes
Bluetooth version:2.1+EDR
Networking features:Gigabit Ethernet, WLAN

Optical Drive

CD-R read speed:24
CD-R write speed:24
CD-RW read speed:24
CD-RW write speed:16
DVD-R Double Layer read speed:4 / 8
DVD-R Double Layer write speed:4 / 8
DVD-R read speed:8
DVD-R write speed:8
DVD-RAM read speed:5
DVD-RAM write speed:5
DVD-RW read speed:8
DVD-RW write speed:6
DVD+R Double Layer read speed:8
DVD+R Double Layer write speed:4
DVD+R read speed:8
DVD+R write speed:8
DVD+RW read speed:8
DVD+RW write speed:6 / 8

Other Features

Audio system:HD Audio
Battery Type:VGP-BPS12
Hard disk drive, user password: Yes
HDD user password:Y
Infrared data port: No
Internal modem: Yes
Modem Speed:56
Modem Type:V.92/V.90 / V90 & V92
TV in port: No
Wireless Technology:802.11 a/b/g/n / 802.11a/b/g/n

Packaging Data

AC adapter bundled: Yes
AC adapter included:Y

Ports & interfaces

CardBus PCMCIA slot type: No
DC-in jack: Yes
Docking connector: Yes
DVI port: No
Ethernet LAN (RJ-45) ports:1
Ethernet LAN (RJ-45) ports quantity:1
ExpressCard slot: Yes
Firewire (IEEE 1394) ports:1
HDMI ports quantity:1
Headphone outputs:1
Microphone in: Yes
Modem (RJ-11) ports:1
S/PDIF out port: No
SmartCard slot: No
TV out:N
TV out port: No
USB 2.0 ports quantity:2
VGA (D-Sub) ports quantity:1


AC adapter input voltage:100 - 240


Bus type:FSB
Chipset:Intel GM45 Express
Conflict Free processor:N
CPU multiplier (bus/core ratio):10.5 / 9.5
ECC supported by processor:N
FSB Parity: No
Motherboard chipset:Intel GM45 Express
Number of Processing Die Transistors:410
Processing die size:107
Processor:P8700 / P9700
Processor cache:3 / 6
Processor cache type:L2
Processor codename:Penryn
Processor cores:2
Processor family:Intel Core 2 Duo / Intel® Core™2 Duo
Processor frequency:2.53 / 2.8
Processor front side bus:1066
Processor lithography:45
Processor model:P8700 / P9700
Processor operating modes:64-bit
Processor Series:Intel Core 2 Duo P8000 series / Intel Core 2 Duo P9000 series
Processor socket:Socket 479 / Socket P
Processor threads:2
Stepping:E0 / R0
Thermal Design Power (TDP):25 / 28

Processor special features

Embedded options available: No
Enhanced Intel SpeedStep Technology: Yes
Execute Disable Bit: Yes
Intel 64:Y
Intel AES New Instructions: No
Intel Anti-Theft Technology: No
Intel Clear Video HD Technology: No
Intel Clear Video Technology:N
Intel Clear Video Technology for MID: No
Intel Demand Based Switching: No
Intel Dual Display Capable Technology: No
Intel Enhanced Halt State:No / Yes
Intel Fast Memory Access: No
Intel FDI Technology: No
Intel Flex Memory Access: No
Intel Hyper-Threading Technology: No
Intel Insider: No
Intel InTru 3D Technology: No
Intel My WiFi Technology: No
Intel Quick Sync Video Technology: No
Intel Rapid Storage Technology: No
Intel Trusted Execution Technology: Yes
Intel Turbo Boost Technology: No
Intel Virtualization Technology (VT-x):1
Intel Virtualization Technology for Directed I/O (VT-d):N
Intel vPro Technology: No
Intel VT-x with Extended Page Tables (EPT): No
Intel Wireless Display (WiDi) Technology: No
Intel® AES New Instructions (Intel® AES-NI):N
Intel® Anti-Theft Technology (Intel® AT):N
Intel® Clear Video HD Technology (Intel® CVT HD):N
Intel® Clear Video Technology for Mobile Internet Devices (Intel CVT for MID):N
Intel® Hyper Threading Technology (Intel® HT Technology):N
Intel® Insider™: No
Intel® InTru™ 3D Technology:N
Intel® My WiFi Technology (Intel® MWT):N
Intel® Quick Sync Video Technology: No
Intel® Turbo Boost Technology: No
Intel® vPro™ Technology:N
Intel® Wireless Display (Intel® WiDi):N
InTru™ 3D Technology: No
Processor ARK ID:37006 / 42599
Processor code:SLGFE / SLGQS
Processor package size:35
Thermal Monitoring Technologies: No


Cable lock slot:Kensington
Password protection:BIOS
Password protection type:BIOS
Trusted Platform Module (TPM): Yes


Bundled software:VAIO Gate, Windows Media Player 11, Picture Motion Browser, Picture Motion Browser, Easy Media Creator 10, Adobe Reader 9, Recovery Utility
Operating system installed:Windows 7 Professional
Trial software:Microsoft Office Ready 2007, McAfee Internet Security Suite


Card reader integrated: Yes
Compatible memory cards:MS Duo, MS Pro, MS Pro Duo, SD
Hard disk rotational speed:5400 / 7200
Hard Drive Interface:Serial ATA
Hard drive speed:5400 / 7200
Host interface:SATA
Total Storage Capacity:400

Weight & Dimensions

Height (front):0.965
Height (rear):1.3