2014年9月15日星期一

Review of MSI GT725 laptops


There are currently three editions of the 17-inch gaming device MSI GT725  laptops  in the German-speaking area. While the GT72-2PE16H11BW (SKU5) has a pretty conventional equipment, MSI really goes all in with the GT72-2PE16SR21B (SKU6) and our review configuration GT72-2PE16SR231BW (SKU7). The box not only contains a large (32 x 27 centimeters) mouse pad, but also a keyboard cover, two dog tags and a bulky backpack. The real highlight is the stylish SteelSeries periphery: Besides a headset (Siberia v2), MSI also equips the more expensive configurations with an optical mouse (Kinzu v2).

The new chassis leaves a much better impression than the GT70 in terms of design. Instead of a chaotic mix of materials and shapes, the customer now gets a pretty grown-up design, even though the 17-inch device still has some gaming elements. While the display cover is made of aluminum, the display frame, the keyboard and the bottom cover are made of plastic. The package is completed by a palm rest that appears to be rubberized.

Even though MSI decided to use a matte finish (only the surrounding of the display frame is glossy), the MSI GT725 attracts dirt quite easily at some spots. Both the metal surfaces as well as the palm rest are very sensitive to greasy fingers. Another point of criticism are the hinges, which sometimes create creaking sounds and cannot keep the display perfectly in position during vibrations. 

The GT725 is also competitive in terms of weight. 3.79 kilograms are on one level with the Clevo P170SM-A, whereas the Alienware 17 and the Asus G750JZ are 400-500 grams heavier. Still, we would classify the GT72 as a typical desktop replacement. Other gaming notebooks like MSI's own GS70 are much easier to carry around.


 The communications section reveals two highlights for gamers. Both the network card as well as the wireless adaptor are based on the Killer technology from Qualcomm Atheros (formerly Bigfoot Networking). Killer products benefit from a comprehensive software and are supposed to be optimized for gamers. Besides the transfer rates, the manufacturer claims to improve the latency as well.

2014年9月11日星期四

Review of Acer Chromebook 13 laptops

Advantages of Acer Chromebook 13 :

 

The Acer Chromebook has a slim design, a high-res 13-inch screen, and a fast Nvidia K1 processor for a graphics and battery boost over other Chromebooks.

One of the nicer-looking and better-performing Chrome OS systems, the 13-inch Acer Chromebook adds some zip by ditching Intel for an Nvidia processor.

Chromebooks are largely cut from the same cloth. Small, lower-resolution screens, minimal onboard storage, low-end Intel CPUs, and modest plastic bodies.
  

Disadvantages of  Acer Chromebook 13:

 

 Like other Acer Chromebooks, offline functionality is extremely limited. The large screen lacks touch input, and the ARM processor presents some compatibility issues, even with online Chrome apps.






The simply named Acer Chromebook 13 drops the common x86 CPU for the ARM-based K1, similar to what one might find in an Android device. The Chromebook 13 gets a few other upscale-feeling tweaks as well, including a decently slim, angular body, a 13.3-inch full-HD 1,920x1,080 display, and excellent battery life. I'd be concerned if these new features were an excuse to drive up prices, but this model, with a very Chromebook-like 2GB of RAM and a 16GB SSD, costs $300 (£220 in the UK, with no Australian availability announced yet) putting it firmly in the middle of the mainstream Chromebook market. 

Design and features of Acer Chromebook 13:

 

The Acer Chromebook 13 laptops  is a plastic laptop, to be sure, but it feels very solidly built, and its matte white design comes off as more minimalist and sophisticated than budget. You won't mistake this for a $1,000 laptop, but it won't get you laughed out of the coffee shop, either.

Google's online "app store" offers a wide variety of apps, such as Pixlr for editing photos, but they're generally web-based tools that simply take you to cloud-based services. For the most part this process works well, but we did run into a few compatibility issues with this Nvidia-powered Chromebook that we did not with Intel versions.

2014年9月2日星期二

About laptop batteries and laptop chargers

Did you know that one of the most important and complicated decisions you can make in http://www.laptop-battery.org.uk is choosing the correct battery charging system for your boat? Charging your laptop batteries is a simple process of driving electrical currents into your battery in the reverse direction as the discharge occurred. Although rechargable battery packs can be a simple process, many things do factor into your decision and play a roll in choosing the proper charger.
The goal of our experts is to help you make an informed decision when you replace or add an on-board charging system to your vessel. You are adding value to your boat by having an on-board battery charger. In addition, these chargers also offer you the convenience and the ability to charge multiple batteries at the same time. You no longer will need to drag out a portable battery charger every time your Lithium-ion battery need to be charging. Maintaining your MSI laptop battery will be as easy as plugging in your boat to any 110 volt outlet.

The first step in the process is to identify what type of batteries you have on board your watercraft. You will need to look for some specifics about the batteries you are wishing to incorporate into the charging system. You will need to determine the following:

- Voltage
- Battery type
- Amp-hour capacity

Typically, in the marine world, you will be dealing with 12-volt systems. The battery's capacity is usually listed on the battery as "ah" or amp hour. Marine batteries will be one of the following types:
- Flooded/wet cell lead acid
- Starved electrolyte AMG
- Maintenance free  



Picture explain: 1002091 battery (pic 1)
10.8V, 488mAh
1002524 battery (pic 4)
MSI gx720Laptop Battery
10.8V,7200mAh
MSI  laptop Chargers typically come in single, double, triple and quadruple bank systems and should have independent outputs to charge each battery separately. The battery industry recommends charging your battery at approximately 15-20 percent of its capacity. For example, a 100-amp hour battery would be best charged at 15-20 amps. For your safety, be sure the battery charger you buy is UL listed to Marine 1236 standards and FCC compliant. If you choose a charger that is too large or small for your batteries it could damage them and decrease the life by overheating, gassing and causing excessive water loss.
Depending on what type of boating you enjoy, you will need to make sure your on-board charger's waterproof housing is designed for fresh and/or salt water. It is also important that you make sure it is vibration resistant and incorporates built-in reverse polarity protection. To prevent boil over or your battery over-heating, be sure the charger you purchase has an automatic temperature compensation, this feature adjust output depending on the temperature to assure a fast full charge in any weather conditions. We suggest getting a charger that will charge in three stages typically these stages are:

- Bulk or quick charge mode - gets your batteries charged quickly
- Absorption stage - brings your batteries to a full charge
- Maintenance or trickle charge - keeps your batteries charged and protects batteries
 

Picture explain: 1061069 adapter (pic 1)
  • Input: AC 100~240V 50~60Hz
  • Output Voltage: 19 V
  • Output Current: DC 4.74 A
  • Power: 90 W
  • Connector: 5.5mm*2.5mm


1061074 adapter (pic 1)
MSI GX720 Laptop AC Adapter

  • Input: AC 100~240V 50~60Hz
  • Output Voltage: 19 V
  • Output Current: DC 3.42 A
  • Power: 65 W
  • Connector: 5.5mm*2.5mm

2014年8月21日星期四

Review of Apple MacBook Pro with Retina Display

Advantages of Apple MacBook Pro with Retina Display  :

 

The 2014 15-inch Apple MacBook Pro offers excellent performance and a better-than-HD screen, plus a boost to its specs for the same price as last year's model.

The entry-level 13-inch and 15-inch Retina models each doubled the included RAM, from 4GB to 8GB for the 13-inch, and 8GB to 16GB for the 15-inch. Both of those models also received a slightly faster CPU, with the 15-inch model reviewed here going from a 2.0GHz Intel Core i7 to a 2.2GHz Core i7, but still from the same generation of Intel Core i-series processors (newer CPUs are expected from Intel late this year).

 Disadvantages of Apple MacBook Pro with Retina Display:

 

 There's very little new here beyond minor component upgrades, and the entry-level 15-inch Pro is the same price as before, even while several other MacBooks have seen $100 cuts. Higher-resolution screens are no longer a unique feature.


Design and features 

 

The exterior design of the MacBook Pro remains unchanged since the 2013 model we reviewed (and essentially unchanged from the 2012 original, as well), so much of the analysis we wrote for the previous model remains unchanged.
This laptop is slim, but with an expansive footprint, and it feels denser than it looks at first glance. The 15-inch MacBook Pro isn't exactly a carry-all-day-every-day package, although one could tote it around to and from work, or on day trips without much trouble.

The large glass trackpad, with its multifinger gestures, remains the industry leader, even as Windows laptops move to more touchscreen controls, at least partially to compensate for the hassle of using a touch pad with Windows 8. The ability to do easy four-finger swipes, and the no-lag scrolling in Web browsers, is something Mac users always been able to brag about to PC users. That said, some basic settings, such as tap-to-click, really should be turned on by default. Instead, I had to go into the settings menus and tweak the touchpad and accessibility settings to get the touchpad set up exactly how I like it.

 

 The keyboard and trackpad remain essentially the same as seen on the last several generations of MacBook. Other laptops have matched, but not surpassed, the backlit Apple keyboard, with the possible exception of Lenovo, a company as involved with keyboard research and development as any.

The 15-inch Retina Display remains a main selling point, and Apple now uses the Retina branding on the iPhone and iPad as well. Some Windows laptops now go for even higher resolutions, and it's not unreasonable to ask when we'll see this trickle down to the MacBook Air line, perhaps in the form of a rumored 12-inch higher-resolution model. The Retina screen has a 2,880x1,800-pixel display, and is at its best when displaying text or professional photography. Videos rarely go past 1080p, and most Mac games can't display higher resolutions to begin with.

2014年8月14日星期四

Review of Toshiba Portégé Z30t-A-10X Ultrabook

Display:
The 13.3-inch display shows a constant resolution of 1,920 x 1,080 pixels (166 ppi). The resulting improved sharpness and additional work space are features one does not want to miss after short time. Admittedly, the ThinkPad X1 Carbon impresses with 2,560 x 1,440 pixels (221 ppi). However, this high resolution has rather limited practical use - also because button icons of many programs cannot be scaled easily anymore.

The second innovation, the capacitive touchscreen,  should be considered more skeptically. On the one hand, one can ask whether a touchscreen is really necessary for a business laptop. That is an individual decision everyone has to make. On the other hand, the touchscreen function asks for compromises concerning the display: the screen which Toshiba calls "anti-glare" is rather a combination of normal glare and anti-glare display. Besides, sliding properties of the slightly shining coating are not really convincing. These negative aspects are however not entirely due to Toshiba, but rather a general problem of such displays.
 
 With that in mind, the Toshiba Portege Z30t that we are focusing on today is not entirely new: already at the end of 2013 we tested the compact business ultrabook, back then called Portege Z30. The new model with the "t" is based on the same chassis, but offers a full HD display with touchscreen function. In comparison with the basic version, both weight and thickness are therefore slightly increased, which is unfortunately also the case for the price: our test device with a Core i7-4500U, 8 GB RAM, 256-GB-SSD and LTE module costs around 1,550€, corresponding to around 100€ extra charge. 

Performance:  
 The Intel Core i7-4500U of the Portege Z30t is the same dual Core CPU that has already been used in the Z30. Unfortunately, Toshiba does not implement the slightly higher clocked successor i7-4510U. At the same time, the 1.8 - 3.0 GHz  4500U allows for respectable performance values, which are next to the high (turbo-)clock speed mainly due to the pro-MHz performance of the Haswell architecture. Power intake of the ULV chips is rated with only 15 Watt TDP, which is meant to reduce noise generation and temperature increase.

Processor:  
In order for the Core i7-4500U to provide the expected performance, the available Turbo Boost (1 core: 3.0 GHz, 2 cores: 2.7 GHz) has to be optimally used. While this works in an exemplary manner for the Portege Z30, the Z30t shows surprising weak points: the single-thread test of the Cinebench R11.5 is perfromed with only 2.8 GHz, the multi-thread benchmark only with 2.2 GHz. Accordingly, scores are rather bad - other notebooks with identical processor work up to 20% faster. The change between different energy profiles or the way power is supplied (battery/grid operation) does not influence clock speeds or benchmark results. 

2014年8月7日星期四

Review of MSI GS70 Stealth

Advantages of MSI GS70 Stealth:

 1. The MSI GS70 Stealth looks great, for a gaming laptop, and combines powerful hardware and a generous HDD/SSD combo into a slim body.
2.  Making small performance trade-offs to fit into a slim, attractive 17-inch body.
3. Longer MSI laptop battery  life: can work as long as 5 hours after fully charged.

 Disadvantages of MSI GS70 Stealth:

Gaming performance is a step down from the very top of the line, despite the high price. The lack of a touch screen makes it harder to use as an everyday Windows 8 laptop. Despite loud fans, the GS70 gets very hot when gaming.  

Design and features of MSI GS70 Stealth:
The design of the MSI GS70 owes a lot, in some respects, to the classic 17-inch MacBook Pro. That discontinued model, like this one, contrasts a large screen with a thin body, and uses a subtle, mostly frill-free outer shell to further deemphasize the body's large footprint. MSI claims this is the world's thinnest and lightest 17-inch gaming laptop, and the extended surface area makes it feel lighter than its 5.8 pounds (2.6kg).

The keyboard is a system highlight. It's branded by accessory maker Steelseries, and feels great, considering it's a flat-topped island-style keyboard, which isn't always everyone's favorite for gaming. The keys are large enough to hit cleanly, there's no flex even under heavy typing, and the bundled Steelseries software allows you to customize the multicolored backlights under the keys, and even assign many different macros to keys for different games. 

 
The interior of the system is also minimalist, with only a large power button sitting above the keyboard in a wide patch of empty space. If anything, there's too much negative space, and I would have liked to see some dedicated multimedia keys, such as volume controls -- something gaming laptops almost never have, despite a clear need.

The large touchpad, like most modern designs, is a clickpad-style pad, with no separate left and right mouse buttons. For gaming, you'll probably be using a mouse or game pad almost exclusively, but the pad is fine for everyday Web surfing -- although letting a finger drag near the right edge too often accidentally kicked up the Windows 8 charms bar.
 
Connections, performance, and battery of MSI GS70 Stealth :

One of the best things about using a 17-inch desktop replacement laptop is the wide range of ports and connections available to you. Despite the slim body, MSI still manages to pack in a lot, including four USB 3.0 ports, HDMI, and dual mini-DisplayPort connections. Even better, the system can drive all three video outputs simultaneously for a big multimonitor view.

2014年8月5日星期二

Review of Samsung ATIV Book 9 2014 Edition

Generally, Samsung ATIV Book 9 2014 Edition has a rare big-screen ultrabook and a premium price. 


Advantages of  Samsung ATIV Book 9 2014 Edition:
1.It is an attractive aluminum-clad 15.6-inch laptop made for mobility with a body that's less than 4.5 pounds, barely more than 0.5 inch thick, and all-day battery life. Its backlit keyboard and large touchpad are generally excellent as is its 1080p-resolution LCD.

2. Samsung's Ativ Book 9 (2014 Edition) certainly looks and feels the part of a premium ultrabook.

3.And that's really the story here with the Book 9 2014 Edition: It's a perfect laptop if you're after more screen space without entirely giving up the thin-and-light body of smaller ultrabooks.  

4.A big-screen ultrabook with a long, long Samsung battery life, the Samsung Ativ Book 9 2014 Edition delivers a high-end laptop experience

Disadvantages of  Samsung ATIV Book 9 2014 Edition: :
Given its more than $1,550 price, you may be disappointed by its lack of discrete graphics and smallish 128GB solid-state drive for storage.

The Samsung  Ativ Book 9 doesn't blend in with the sea of silver Windows ultrabooks that are available, but the gray-black aluminum doesn't scream, "Look at me!", either. The laptop alone weighs only 4.4 pounds (2 kg) and measures 14.7 inches wide by 9.8 inches deep by 0.6 inch thick (37.3 by 24.9 by 1.5 cm).
The gentle curves at the back have just enough room for its full-size HDMI and three USB ports (one USB 2.0 and two USB 3.0) as well as a headphone/mic jack, security slot, and small inputs for Ethernet and VGA out that require dongles to use (the former is included, the latter will set you back $40). An SD card slot is behind a spring-loaded door on just under the curve on the right side. 

 The backlit keyboard of Samsung ATIV Book 9 is nice, too. The larger body gave Samsung laptop room for a spacious keyboard with no awkwardly sized keys and each has a curved key cap, which Samsung says cushions finger tips. Typing does feel soft without being mushy and there's a fair amount of travel despite the shallow body.


The touchpad is large and generally responsive, though occasionally it seemed to pause while scrolling or dragging a finger across it. The surface does have a bit too much drag for my liking, which could have contributed to this. However, I didn't experience any cursor jumping and it ignored dragged palms.