I've heard it called Silicon Prairie, which it was called way back in the 70's and 80's. It does make sense though, since Texas Instruments and various computer companies were based there, which is the same reason Silicon Valley got its name.

If anything, Austin is more deserving of the "Silicon X" moniker than the Bay Area, as TI invented the silicon transistor and the integrated circuit.

Silicon Hills actually refers to the boom in chip manufacturing in ATX in the 80s and 90s. After the dot-can boom and bust it now has the “like Silicon Valley but ‘weirder’” connotation.

Well, at least they copied the meaningful part of "Silicon Valley". In Korea we have Pangyo Valley and Teheran Valley. (And no, they aren't valleys.)

Silicon Sinkhole

I sometimes hear Cambridge referred to as Silicon Fen, and always thought it was dumb (there should be enough strength in the Cambridge name on its own).

I agree, and particularly so since Cambridge itself isn't even in The Fens.

I wonder which state will be Silicon Commode ...

California.