Facebook says Tilera chips  better than Intel and AMD -

Engineers working at the social not-working site Facebook claim that tests on Tilera's many-core processors proved that such set-ups were more efficient than low-power, multi-core chips from Intel and AMD.

In a white paper, released to Eweek, the boffins said that a Quanta Computer system running on Tilera's low-power 64-core TilePro64 processors gave three times the performance-per-watt of Intel's quad-core Xeon chips and more than four times AMD's eight-core Opteron chips.

In the sorts of data centre environments used by internet based outfits like Facebook, Google and Amazon, power and cooling are as important factors as performance.

Facebooks engineers said that they ran the tests using the Memcached tool, and engineers found that the Tilera-based system was more efficient than those running x86 chips.

Low-power many-core processors are well suited to KVstore workloads with large amounts of data, the engineers wrote.

Even with lower clock speeds, these architectures can perform better than comparably powered low-core-count x86 server processors, they added.

The 64-core Tilera chip had 67 percent higher throughput than the low-power x86 chips at the same latency.

A TILEPro64-based S2Q server with eight processors handles at least three times as many transactions per second per watt as the x86-based servers with the same memory footprint. We guess that depends on the shoe size.