It turns out that the 60-core Xeon W9-3595X leak from last week is part of a 14-SKU mid-lifecycle refresh of the Xeon W LGA4677 series targeting the workstation and HEDT markets. The underlying microarchitecture and silicon at the heart of these is "Sapphire Rapids Refresh," it's essentially the same as "Sapphire Rapids," but with CPU core-count increases across the SKUs. If you recall, the "Sapphire Rapids" MCM has a maximum core-count of 60-core/120-thread which is maxed out in Xeon Scalable server processors, but only hit up to 56-core/112-thread with the original W3400 and W2400 series HEDT/workstation chips. This unused 4-core headroom, combined with increases in clock speeds, is how Intel plans to create these 14 SKUs across the new W3500 and W2500 product lines.

As with the original W3400 and W2400 series; what set the W3500 series chips apart from the W2500 series, is the I/O. The W3500 series gets 8-channel DDR5 memory and 128 PCIe Gen 5 lanes, while the W2500 series chips get 4-channel DDR5 memory and 64 PCIe Gen 5 lanes. As we mentioned, this refresh is all about increasing the CPU core counts at existing price points. The top W9-3595X is a 60-core/120-thread chip, compared to the 56-core/112-thread W9-3495X it's replacing. The new W9-3575X gets a massive 8-core uplift, and is now a 44-core/88-thread processor, compared to the 36-core/72-thread W9-3475X. The W7-3565X is 32-core/64-thread, compared to the 28-core/56-thread W7-3465X.