Intel ARK is now listing the company’s new Cascade Lake W-3000 series Xeon processors, which replace Skylake W and comprise nine models. At the top is the 28-core W-3275/M with a 2.5 GHz base frequency and 4.4 GHz turbo frequency. These are the same chips powering Apple’s new Mac Pro.
All processors have the same features including AVX-512 support with 2 FMA units as well as support for up to 1 TiB of hexa-channel DDR4-2933 memory. There are two additional “M”-suffixed SKUs which have 2 TiB extended memory support. The maximum TDP has been changed to 205 W (255 W for Xeon W-3175X), and the memory has been changed to DDR4-2933/2 TB maximum.
The 3000 series has adopted Turbo Boost Max Technology 3.0, which Intel describes as “a combination of software and hardware that delivers more than 15% better single-threaded performance.” Guru of 3D points out that none of them support Optane DC Persistent Memory, however. They also suspect the specification for 64 PCIe lanes could be a mistake (all other Xeons have 48).