Rich's Tongfamily (Richtong.net add-on)

As some folks have discovered, only the $600 1650 V3 (Broadwell-ES) chip overclocks and it is now running on a test machine at 4.2GHz vs the stock 3.5GHz. This is the current best choice (although power consumption is much higher than for Skylake) if you want ECC and overclocking a relatively cheap part.
If a $600 6-core part can be considered cheap 🙂 Still it is a nice chip for machine learning rigs and with a true 4×16 PCI Express lane system like the ASUS X99-ws, this is probably the fastest stock part you can pair with lots of memory (128GB ECC) and 4 Titan’s. woo hoo!