Larrabee differes from today's GPUs in that it will use the popular x86 instruction set for its shader cores instead of a proprietary graphics-focused instruction set, and will feature cache coherency across all its cores like a multi-core CPU (and unlike current GPUs).

Larrabee provides practical solution to current limitations of GPUs. Larrabee does not special API for Larrabee, it works with current APIs for DirectX and OpenGL. Larrabee uses 1024-bit ring bus to transfer data efficiently and fast between gpu cores. All cores are true x86 processors, based on original Pentium architecture + many extensions and additions added to that base.

Larrabee is completely flexible and completely programmable, offering many optimization compared to existing technology and will revolutionize graphics industry. To paint this more plasticly - picture this - Larrabee gpu will be able to support DirectX 10, and then when released DirectX 11, and some years in future - DirectX 12 - yes on the same board…

Larrabee supports massive parallelism and scalability, which should be high-end GPU selling point probably (maybe not at the start). Memory technology used in final product was not yet reveled, but Intel's engineers say that there is no limitation to which memory technology can be used. Our sources indicated that GDDR5 will be used in final product, and very likely Intel will include 4 cores at entry level card, with high-end card's number yet undecided. But Intel's internal goal is to reach 2 teraflops of computing power. 

We hear that at least two big manufacturers (and from good relationship with Intel, we suspect that Gigabyte is one of them) will start offering Larrabee based graphisc boards from day zero - while other graphics cards manufacturers are being drafted by Intel as we speak (to angry the Nvidia for sure)… Anyhow, we heard that official release date for cards is June 1st 2009 - almost a year from now… (hopefully intel will be able to push this date closer to now).

Developers who were revealed more architecture details, were very pleased as Intel would like us to believe.

More information on Larrabee will follow soon - on august 4th, but collective info is available on wikipedia.