Tilera's chip isn't really comparable though: it's really just a big DSP, with an extremely limited memory access model more reminiscent of the Cell SPUs than an ordinary CPU. This, combined with a custom instruction set and the lack of decent caches and vector units let you get away with many more cores on much less silicon using much less power--albeit at a clear cost.
(As I said yesterday) Actually Tilera is better than Cell or this Intel chip because Tilera is cache-coherent SMP and runs regular Linux with pthreads.