If you've never seen the work coming from the dev team behind Project Offset, the game engine Intel bought several years back, you really ought to take a look. While the game has been under development for over five years, Intel bought the firm two years ago and devoted a significant amount of energy towards positioning Project Offset as the showcase engine for what Larrabee could do. With Larrabee, if you recall, Intel was pushing the idea that real-time raytracing (RTRT) could replace traditional rasterization in 3D gaming. ATI and NVIDIA never took too kindly to the idea; the result was quite a bit of back-and-forth posturing about what could and couldn't be done with near-generation hardware.

Source from : www.hothardware.com

How ever Intel canceled Larabee project and Project Offset has been stopped with it

See this picture from Project Offset :
http://www.nxus.co/wp-content/uploads/2011/12/project_offset_04-600x347.jpg

For MMO development, I like the http://en.wikipedia.org/wiki/LPMud family of engines. Very flexible, very quick to prototype and develop, a lot of ready-to-use libraries (though almost all of them text-MMO only, as far as output format goes).

Didn't know about this engine , thanks

Well, it's server-side, so ... zero graphics, zero sound, but a lot of features meant for developing MMO servers.

Check Intel Larrabee pictures and Information in this links :
http://www.brightsideofnews.com/news/2011/6/20/intel-larrabee-take-two-knights-corner-in-20122c-exascale-in-2018.aspx
http://www.tomshardware.com/forum/311042-33-intel-larrabee-pics

I think still Intel continues working on Larrabee , this is very good , and i hope Offset engine continues , i like this engine

Thank you