On Friday, Dell revealed its XPS All-in-One computer that is going to rival with Apple’s iMac and Gateway’s similar all-in-one PCs. Although Dell wasn’t expected to formally unveil the new smart device until November 19, on Friday the company had already posted even the pricing information for all its four XPS One configurations.

Dell’s XPS All-in-One PC will be a system with only a widescreen display, a keyboard and a mouse and it will come in four different designs with the monikers indicating the target audience, as well as the computer’s specific capability: the Essential One, the Music One, the Performance One and the Entertainment One.

All the four systems will feature Intel Core 2 Duo microprocessors, 2 GB of memory, 20-inch displays, hard disc drives starting at 250 GB, Bluetooth 2.0, 802.11 a/b/g/n Wi-Fi wireless networking, a TV tuner and a remote control. And they will all run Microsoft’s Windows Vista Home Premium.

Dell will ship the Music One system with wireless headphones, while the Entertainment One, which was designed as a home media center, will come with a Blu-ray high def DVD burner, as well as with an ATI Radeon HD 2400 Pro graphics card with 256 MB of memory.

The prices for Dell’s new XPS All-in-One computers will start at $1,499 (the Essential One) and move up to $2,499 (the Entertainment One).