????用一只手拿著索尼（Sony）的13英寸Vaio Pro筆記本電腦，就會吃驚地發(fā)現(xiàn)它有多輕。它甚至比最苗條的11英寸MacBook Air還要輕。

????MacBook Air顯然遠遠算不上重，但蘋果（Apple）的競爭對手索尼聲稱，Vaio Pro的整個機身都采用了碳纖維材質，11英寸版的重量只有1.92磅，13英寸版為2.4磅。這一點相當引人矚目，因為13英寸版Vaio Pro只比11英寸MacBook Air重一根頭發(fā)，但屏幕尺寸卻大兩寸。

????索尼向我們提供了起步價為1,249美元的13英寸版Vaio Pro以供測試。這款電腦配備了Windows 8系統(tǒng)、英特爾最新一代1.6GHz（最高2.29 GHz）Haswell處理器、4GB內存、128GB固態(tài)硬盤、2個USB 3.0接口、1個SD卡插口和1個HDMI輸出接口。顏色有兩種（銀色和碳黑色）。這款筆記本電腦看起來像是前身的高度進化版本。如果說聯(lián)想X1 Carbon（我們在去年9月進行了評測，它的設計平淡無味）是超級本領域里的林肯Town Car，那么索尼Vaio Pro黑色款就是特斯拉Model S。

????更關心視覺表現(xiàn)的PC商務騎士們會發(fā)現(xiàn)，Vaio Pro在這個方面不僅滿足而且超過了他們的需求。13英寸觸摸屏擁有1,920 x 1,080的最高分辨率，能夠立即響應手指的點擊和滑動，而且還采用了Triluminos技術，這種顯示方法帶來了索尼所承諾的那種豐富逼真的色彩。我不敢說Vaio Pro的屏幕色彩更加精確，但有旁觀者認為比其他大多數(shù)超級本的顯示屏更加生動。至少，觀看圖片和電影是種享受。

????帶有內置燈光的鍵盤很大，足以讓我這種打字快的人能夠迅速寫完電子郵件而不會出現(xiàn)打字錯誤。觸控板在大多數(shù)時候表現(xiàn)良好，但有時用兩根手指滾動網頁會出現(xiàn)幾秒鐘的嚴重延遲。這個問題時有發(fā)生，很令人不爽。確實，雖然PC觸控板制造商們在追趕蘋果筆記本電腦的觸控板方面已經取得了某些進展，但他們還沒有完全成功。

????Clasp Sony's 13-inch VAIO Pro in one hand, and you'll be impressed by how light it feels. It's even lighter than the most svelte 11-inch MacBook Air.

????The Air is obviously far from heavy, but thanks to carbon fiber used throughout the Vaio Pro's body, Sony (SNE) trimmed the weight to 1.92 lbs. for the 11-inch version and 2.4 lbs for the 13-incher, trumping Apple's (AAPL) competitor. That's impressive given that the latter Sony model weighs just a hair more than the 11-inch Air but manages two more inches of screen real estate.

????For testing, Sony loaned us the entry-level $1,249 13-inch model stocked with Windows 8, Intel's latest-generation Haswell processor running at 1.6 GHz (with speeds up to 2.29 GHz), 4 gigabytes of RAM, a 128 GB solid state drive, 2 USB 3.0 ports, an SD card slot and an HDMI output. Available in two shades -- silver and carbon black -- this notebook looks like highly evolved versions of predecessors. If Lenovo's X1 Carbon, reviewed last September, with its safe, innocuous design, is the Lincoln Town Car of ultrabooks, the Sony Vaio Pro in black is a Tesla Model S.

????PC road warriors more concerned with making a visual statement will find the Vaio Pro offers that and more. The 13-inch touchscreen display, with a maximum resolution of 1,920 x 1,080, responds instantly to taps and finger swipes. It also sports "Triluminos" technology, fancy jargon for a kind of lighting method that translates into what the company promises are rich, authentic colors. I wouldn't say colors onscreen appeared more accurate, but they were more vibrant than most ultrabook displays -- an observation onlookers made in passing. At the very least, viewing photos and movies was a treat.

????The keyboard with built-in lighting is large enough so even loud typers like me who attack the keys can quickly bang out emails or write typo-free; the trackpad works just fine for the most part, but sometimes there was a serious delay lasting several seconds when trying to scroll down web pages with two fingers. It happened often enough to be annoying.?Indeed, while PC trackpad makers have covered some serious ground in catching up with the trackpads featured in Apple's notebooks, they're still not quite there yet.