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If you're not using Bluetooth or Wi-Fi, turn them off. Most laptops either have a physical button or a key combination that will allow you to quickly enable or disable them. If your laptop doesn't have a shortcut button, the Windows Key + X keyboard shortcut will bring up the Windows Mobility Center. The WMC provides quick access to some mobile settings, including Wi-Fi.Turn off automatic tasks and programs to keep the processor from running things you don't need. A really good program for disabling startup programs is called AutoRuns for Windows. You can also use MSConfig, which is already included with Windows. Just type "msconfig.exe" in the search box of Windows Vista/7 or in the run box of Windows XP.Also, try to keep the laptop's vents clear of dust or other obstructions so the processor doesn't overheat. Blankets and pillows are notorious for overheating a laptop, so try to find a flat surface to use your laptop on. If the CPU overheats, the laptop will use more power to run the fans that cool it.

The more your laptop's hard disk has to work, the more power it will have to use. Defragging the hard disk will reduce the time it takes to find files, thus minimizing disk usage. Also, to prevent your system from using the hard disk for virtual memory, consider maxing out the memory in your laptop. Lastly, if you can afford it, consider upgrading to an SSD drive. An SSD drive consumes less power than standard hard-disk drives, weighs less, and will also give your laptop a considerable performance boost.About every 2 months, try to clean the metal contacts on the battery and your laptop with a cotton swab and rubbing alcohol. This will help prevent dirt and corrosion from affecting battery performance. If you own a laptop with a NiMH battery, recalibrate the battery every now and then by letting the battery run all the way down, then charging it all the way up. Lithium ion batteries don't have the same memory effects as nickel metal hydride batteries so there's no need to condition one. In fact, manufacturers encourage users to top off a lithium ion battery frequently and to avoid completely discharging it.

If you have an optical drive in your laptop, disable it in Device Manager. Optical drives, even when they're not spinning discs, are power hogs. If you want to watch movies on your laptop, try getting a digital copy onto your hard drive instead. Watching a movie directly from the hard disk uses less power than watching a DVD from the optical drive. Finally, avoid using expansion slots or USB ports, when trying to conserve battery life. Remove all unused peripherals, including external hard drives, keyboards, and mice, which all draw power from your laptop.That's it. The next time you're in class, at a meeting, or sitting in an airplane, keep these battery-saving tips in mind. Better yet, implement some or all of these tips beforehand, so you'll be ready to go.Intel's upcoming Ivy Bridge chip will be a big step up in graphics performance for Intel. And benchmark numbers suggest that you may want to wait for that new Ivy Bridge-based MacBook or Windows lappy before upgrading your system.A Chinese-language Web site has posted benchmark numbers (reposted by CPU World) that show a jump in graphics processing unit (GPU) performance of up to 122 percent over the current Sandy Bridge processor.

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"In 3DMark Vantage synthetic benchmarks Core i5-3570K (Ivy Bridge) achieved 88.9% higher GPU score when using Entry preset, and 122.1% better score with Performance preset than [the] Intel i5-2500K (Sandy Bridge)," said CPU World.And a faster GPU is important not only for games but for a host of multimedia-related operations such as transcoding and image manipulation.Other chip Web sites have weighed in about Ivy Bridge performance recently. "[Ivy Bridge's] underlying architecture is completely new. Between architectural changes, clock speed increases, and other changes, Intel is claiming about 2x the graphics performance...We don't think these claims are out of line for the general case," said chip-centric site Semiaccurate.Below are gaming benchmarks showing the increase in performance numbers when comparing the Ivy Bridge i5-3570K with HD 4000 graphics to a Sandy Bridge i5-2500K with HD 3000 (via CPU World):

Of course, no article about Intel graphics performance would be complete without mentioning that a system with a separate graphics card from Nvidia or Advanced Micro Devices is going to deliver better performance.However, many of the super-skinny ultrabooks due in the coming months (and already out) either don't have room for a standalone "discrete" graphics chip or the designers simply decided they don't need it. Not to mention the fact that PC makers essentially get the graphics for free because the Intel GPU is built into the Ivy Bridge chip, right next the CPU (central processing unit).Once a popular choice for on-the-go laptop shoppers, the 11-inch laptop has fallen on hard times of late (aside from the $999 11-inch MacBook Air). It's not quite as steep a drop-off as we saw with the 10-inch Netbook, but you could count the number of 11-inch laptops we've reviewed this year on one hand, and still have a few fingers left over.Sony has a new 11-inch Vaio E that makes a decent case for reviving this category, with usable performance and a sharp design, and coming in at $449 thanks to a new AMD E2-1800 processor (an Intel Core i3 version would doubtlessly cost more).

The recent trend toward thin ultrabooks has largely made 11-inch laptops unnecessary. They still have smaller desktop footprints, but usually weigh more and have thicker bodies than super-slim 13-inch laptops, which end up being more useful all-around travel machines for most people. But, those 13-inch and larger ultrabooks (or ultrabook-like systems, such as HP's new Sleekbook line) still cost more, at least $599 and usually closer to $1,000. With performance that's acceptable, but not exactly zippy, and a body that feels a bit plasticky and clacky, I'd be more comfortable with the 11-inch Sony Vaio E at $399, rather than $449. But for portable Web surfing and basic productivity, it does the job. And, thanks to AMD's insistence on including decent graphics hardware from the former ATI (now just AMD's GPU division), this system actually does a decent job of playing games.This 11-inch model is not the only Vaio E series laptop Sony makes. We previously reviewed the 15-inch Vaio E15, which has a similar look and feel (although it has an Intel Core i5 CPU). This E-series design has a two-tone palette, in this case a white keyboard tray and wrist rest wrapping around to the bottom panel and lid, contrasted against a black at the top of the keyboard tray, the screen bezel, and the side panels.

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It's a smart look that belies the system's budget price, and part of a trend I'm seeing with lower-cost laptops getting attractive makeovers, including the HP Envy Sleekbook 6 and the Dell Inspiron 14z.While this is a reasonably portable 11-inch laptop, there's a lot of competition out there in both thickness and weight. Apple's 11-inch MacBook Air weighs about one pound less, and Acer's 13-inch Aspire S5 is close to that. Both are also much thinner. In fact, this Vaio E is as thick as Dell's high-end midsize XPS 15. While Sony almost always has good-to-excellent keyboards on Vaio laptops, the keyboard in the new E series is especially pleasing, considering the price. The flat-topped, island-style keys (a style Sony used long before it was popular) feel solid, with very little flex, even under heavy typing. The key faces are smaller than what you might be used to on a 13-inch or larger laptop, but Sony does a good job of making sure important keys, such as Tab, Shift, and Enter, are large enough to hit easily. The four directional arrow keys get a little squeezed, however.

My two biggest complaints are that the keyboard is not backlit -- a feature found on even budget-price laptops now, and the multimedia control keys, such as audio volume and mute, are relegated to Fn+F-key assignments, making them hard to use on the fly.The long, rectangular touch pad reminds me of what you used to see on 10-inch Netbook laptops. To keep the system's overall size down, a longer, almost letterbox-style touch pad is used. This one is not as shallow as some I've seen, but its dimensions do make scrolling down long vertical Web pages more difficult. That said, the matte surface has the right amount of grip, and two-finger scrolling was pleasingly responsive.Sony loves to develop and include proprietary media and sharing software with its laptops. Here, you get an app called PlayMemories, for managing photos and videos, as well as a different app called Media Gallery, which, well, manages photos and videos (and music). There's also the Vaio Gate quick-launch bar, found on every recent Sony laptop, which can point your to specific apps and settings menus. I always end up turning it off, because by default it sits behind a floating tab at the top edge of the screen and invariably activates itself whenever I put the cursor near the top of a Web browser page (to type in a URL, for example).

The 11.6-inch display has a native resolution of 1,366x768 pixels. That's an arguably overused resolution, found on laptops from 11 inches all the way up to 15 inches (I've even seen it on a couple of budget 17-inch laptops), but it's best suited for this screen size. Sony is known for excellent displays, and this one has good off-axis viewing from the side, although it still has a narrow vertical optimal field of view.With a body thicker than many 12-inch laptops, the 11-inch Vaio E can fit in some of the ports left out of slimmer systems. There's a full-size Ethernet jack, for example, which is often relegated to an external dongle in ultrabooks, as well as a VGA video output, another space-hogging connection frequently dropped . This is the first laptop we've tested with AMD's dual-core E2-1800 processor. That's a separate line from AMD's flagship A-series CPUs (although AMD calls them APUs, or Accelerated Processing Units, combining CPU and GPU in one unit), which we just saw in the HP Envy Sleekbook 6.

The more advanced A6 chip in the HP Envy was slower than, but still a reasonable match for, comparable Intel parts. The E2-1800 was not even in the same ballpark performance-wise, and fell well behind in our benchmark tests. Looking back over the laptops we've tested this year, only the Lenovo ThinkPAd X130e, with an AMD E-300 CPU and a Toshiba C655, with an Intel Celeron processor, had somewhat similar scores.Apple's range of MacBook laptops could have their batteries hacked, if a Forbes interview with security researcher and experienced hacker Charlie Miller is to be believed.Modern laptop batteries aren't dumb chunks of lithium. They've got a microprocessor stuck on them that talks to the laptop itself, doing useful stuff like checking power levels and monitoring the heat of the battery. According to Miller, however, the MacBook, MacBook Pro and MacBook Air all have chips that ship with a default password.Once you know that password, it's possible to wreak all manner of havoc on a computer's battery. Bricking the battery, making it completely useless, is apparently a simple procedure.

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