You are right I shouldn't lump all generations together as "Larrabee". I didn't realize the definitive specs of Knights Landing came out (2 months ago?). KL doe

You are right I shouldn't lump all generations together as "Larrabee". I didn't realize the definitive specs of Knights Landing came out (2 months ago?). KL does improve a lot over KC, and now almost matches current GPUs: KC: 8 GFLOPS/W at the device level (Xeon Phi 7120: 2440 GFLOPS at 300 W). KL: 28 GFLOPS/W at the device level (Xeon Phi 7290: 6912 GFLOPS at 245 W). Compare this to 32-47 GFLOPS/W at the device level for current-generation AMD and Nvidia GPUs. (All my numbers are SP GFLOPS.)