Spring put on its best face this year for the start of the annual Cebit exhibition. Too bad it didn't last.

By the third day, sunny skies and warm weather gave way to the cold wind and light rain that's a hallmark of CeBIT and more typical of March in northern Germany. But the change in weather didn't prevent hordes of visitors from descending on the show over the weekend to see what gadget makers have in store for them this year.

Here's a look at what CeBIT had to offer this year:

Optimus Minimus

Russian designer Art Lebedev is the creative mastermind behind the Optimus Maximus, a keyboard with small OLED (organic light-emitting diode) screens on each key. The idea is that users can change the key displays to suit different languages or applications, switching the keyboard layout from Cyrillic to English, for example. Cool idea, but difficult to manufacture.

Lebedev had promised to show the Optimus Maximus at Cebit, but turned up empty handed. Well, not completely empty handed. He came to break the news that the keyboard will cost $1,500 (£770) when it finally hits the market in November.

"Anyone can do a keyboard that costs ten dollars, just simple plastic keys. But when you put displays inside the keys you face a lot of problems. There are hundreds of problems waiting for you at every corner," Lebedev said.

Game on

Asustek is now shipping a water-cooled graphics card that lowers a PC's internal temperature, while improving graphics performance.

The AquaTank EN8800GTX graphics board is based on an Nvidia GeForce 8800GTX graphics chip and packs 768MB of high-speed DDR3 (double data rate 3) memory. Asustek said the water-cooling system helps to keep the graphics chip running 12ºC (54ºF) cooler than other 8800GTX boards. That translates into a performance gain of around 11 percent, it said.

The AquaTank cards are currently in production and will soon be available. No word yet on pricing, however.

Thinking outside the photo frame

Samsung plans to ship a 7in digital photo frame with built-in Wi-Fi that can display images from an Internet RSS (Really Simple Syndication) feed. Of course, the frames also work with four kinds of memory cards and pack a USB host, which means you can plug in a flash drive or portable hard disk.

The photo frame is meant to be paired with a PC running Microsoft's Windows Vista operating system, using Wi-Fi to display photos stored using Windows Media Player 11.0. A Samsung executive said the €229 (£118) SPH-72P frame will hit European markets in May. If that price seems steep, don't worry. The company plans a (somewhat) cheaper version, priced at €179 (£92) that doesn't have Wi-Fi.

Expect to see more digital photoframes from Samsung soon. The company also showed off larger versions, measuring 8in and 12in diagonally. These larger displays will come out later this year, the executive said.

Let them have USB

Samsung also showed off a 19in TFT LCD monitor, the SyncMaster 940UX, that connects to a PC over a USB connection, eliminating the need for a graphics card. The company says USB makes it easier for users to have multiple displays, saying one computer can support up to six monitors.

Samsung is betting that the USB monitor will appeal to notebook users who find themselves frustrated with having to use a small display at their desks. The SyncMaster 940UX offers a resolution of 1,280x1,024 pixels and a built-in USB hub. Pricing and availability wasn't available.

Stream this

Mitac will soon begin production of a UWB (Ultrawideband) hub that can be used to stream high-definition video from a portable hard disk to a notebook computer.

With speeds that run into the hundreds of megabits per seconds, UWB is far better suited to streaming video than Wi-Fi, which is too slow to keep up with the high bitrates that HD (high-definition) video requires.

Mitac showed off the UH-4100 UWB hub capabilities at its booth, streaming a high-definition movie on a portable hard disk that was connected to the hub via a USB (Universal Serial Bus) port. The video streamed without interruption to a notebook computer equipped with a MUD-4100 USB dongle to receive the UWB signal.

Mitac said the hub goes into production and will hit store shelves by the middle of the year.

For more of PC Advisor's Cebit coverage, see the links below.

Samsung mulls cheaper Q1 Ultra

Flybook takes new angle on laptops

Intel plans energy-efficient chips

Acer wary of ultramobile PCs

German police hunt through Cebit

British firm scoops tech award

Symantec slams Microsoft's security strategy

Toshiba adds Windows Mobile smartphones

PS3 to drive high-def movies

EU roaming fees 'regulated by June'

Commodore returns with gaming PCs

Russia promises to battle piracy

Blu-ray claims bragging rights

HD DVD beats Blu-ray on all counts

Samsung 'surprised' at UMPC interest

USB monitor has flash memory