A notebook from MSI portends the crush of lower-cost, Intel-based MacBook-Air-like laptop designs to come.
The MSI X-Slim series herald Apple MacBook Air-like laptops without the luxury laptop tax
(Credit: MSI)As I've written before, consumer ultra-low-voltage (CULV) chips will arrive in earnest this summer. The X-Slim X340 from MSI (Micro-Star International) is using the ULV SU3500, a precursor to lower-cost CULV Intel chips to come.
(Note: On April 19, Intel cut prices (PDF) on a wide range of processors. Though the SU3500 didn't see any cuts, the prices on its low-power cousins, the SL9400 and SU9400, were reduced 10 percent and 9 percent, respectively.)
What is CULV exactly? Well, one thing it's not is the Netbook-centric Atom processor: the 1.4GHz SU3500 is based on Intel's higher-performance mainstream Core 2 architecture. But like the Atom, it's a single-core chip. Single core means low power. In this case, the SU3500 draws only 5.5 watts, more than the Atom but a fraction of the dual-core mainstream Intel mobile chips rated at 25 and 35 watts. It also comes in a small 22mm chip package.
And what does all this mean? Better performance than Atom-based Netbooks. And in a well-designed system, longer battery life than a mainstream laptop.
Oh, and lower prices than luxury laptops like the Apple MacBook Air and Dell Adamo, which start at around $1,800. The MSI X-slim 340 with the SU3500 was launched this week in Japan and the higher-end version starts at around $1,000. U.S.-based reports say it is priced at $1,100.
The ultra-thin HP Pavilion dv2 laptop powered by AMD's Athlon "Neo" chip is also in this price range. AMD CEO Dirk Meyer said Tuesday that the single-core Neo processor will get a dual-core sibling dubbed "Congo" by summer.
Let the low-cost laptop competition begin.
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Full hybrids have to date been almost synonymous with Toyota's Hybrid Synergy Drive (HSD) system, which, in addition to being the technology behind all Toyota and Lexus hybrids, is licensed by Nissan for its Altima Hybrid and is used in a modified version by Ford in the Ford Escape and Mercury Mariner hybrids. This hybrid monopoly is about to change, however, as GM readies its 2-Mode hybrid system for introduction later this year in the Yukon Hybrid and Tahoe Hybrid SUVs. Like HSD, GM's 2-Mode system enables cars to run just on electricity, just on gasoline, or a combination of the two. The system makes use of a two electrically controlled variable transmission (ECVT) modes, which change based on the car's speed and engine demand. The result, according to GM, is a 40 percent improvement in city fuel economy over the gasoline-only Yukon, and a 25 percent improvement in overall gas mileage.
We took a ride along with GM this week in the 2008 Yukon Hybrid and got a firsthand impression of the next big thing in the hybrid world. Check out our photo gallery here.
Chevy Tahoe hybrid
General Motors is banking on the increasing demand for fuel-efficient cars by launching hybrid versions of two of its full-size SUVs: the GMC Yukon and the Chevy Tahoe. And although the cars aren't slated to go on sale until this fall, GM is already busy building buzz.
The new models, available in both two- and four-wheel drive, use a "two-mode" powertrain designed jointly by GM with BMW and Daimler-Chrysler. This Hybrid Operating System (HOS) allows the car to operate either on electricity or gasoline, depending on the power needs of the car.
Allocation of electric power versus gasoline power is determined by a combination of factors, including driver input, speed and terrain. GM claims the Tahoe can run with gentle throttle input (that is, no punching down on the gas pedal) up to about 32 miles per hour purely on electric power. If the driver reaches higher speeds, accelerates quickly or starts up a steep grade, the internal combustion V8 engine will kick in to deliver more power. The two-mode system also provides enough juice to tow up to 6,200 pounds.
Like other hybrids, the Tahoe and Yukon use regenerative braking to help recharge the car's 300-volt nickel-metal-hydride battery when the car stops or slows down. Two electric motors power an electronically variable hybrid transmission.
GM hasn't released numbers in any detail yet, but the company claims the new hybrids are 40 percent more fuel-efficient in city driving alone, and 25 percent more fuel-efficient overall than their nonhybrid counterparts. The big discrepancy between city and overall performance is due, in part, to the fact that the car relies more heavily on electric power at slower speeds, and because city driving requires more braking, which charges the battery more often.
GMC Yukon hybrid
While the two-mode system seems to provide ample power, it's hard to believe the typical full-size-SUV owner would use these cars in a manner that would achieve maximum fuel efficiency. Passengers and cargo, as well as towing, affect gas mileage drastically. Even with a light load, fuel efficiency can vary greatly from driver to driver -- lead-footers will see that fuel gauge needle drop much faster.
Even under optimal driving conditions, a mere 25 percent overall improvement in fuel quality is a little disappointing. The 2007 nonhybrid models of the Tahoe and Yukon are rated between 15 and 22 miles per gallon, depending on the trim level. That means, at their best, the new hybrids will perform 3.75 to 5.5 miles per gallon better overall (although GM says city driving alone yields an improvement of 6 miles per gallon).
That said, continued consumer demand for horsepower and a simultaneous increase in environmental awareness must make it incredibly difficult for designers and engineers to strike a balance between fuel efficiency and performance, especially with vehicles this size. With these seemingly conflicting interests in mind, the Tahoe and Yukon do a fair job pleasing some without alienating others. And while GM's hybrid models are a step in the right direction, the reality is, at this point in time, gigantic SUVs still aren't good for the environment.
GM plans to unveil hybrid versions of other cars and trucks over the next couple of years, including hybrid Saturn and Cadillac models. Could a fuel-efficient Escalade be on its way?
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