Intel Xeon Granite Rapids: 120 cores with a TDP of 500W, more than twice as fast as Emerald Rapids [Report]

Plans for Intel's 6th generation Xeon Granite Rapids processors have surfaced. Although this data is out of date, it should not be much different from the final figures. As with Cascade Lake, there will be two separate platforms, Granite Rapids-SP/Birch Stream-SP and Granite Rapids-AP/Birch Stream-AP. The first will have a maximum of 80 cores, while the second will have up to 120.

Contrary to recent rumors, these documents claim that Granite Rapids will build on the central Redwood Cove architecture. An update to the core architecture for an entire generation is unlikely, so I expect a revision of the same Redwood Cove design. The Granite Rapids-SP will use the LGA 4677 socket with a TDP of up to 350W, while the Granite Rapids-AP will adopt the much larger LGA 7529 socket with a power cap of 500W.

Granite Rapids-SP on Birch Stream-SP will feature a quad-die design with two P-core chips manufactured on the Intel 3 process, and two I/O chips manufactured on the Intel 7 node. specifications have changed from Intel 7 to Intel 3. Conversely, it may be the old node naming system, in which case it is the same node (Intel 4->Intel 3 is largely an upgrade up to date with HP EUV libraries).

Granite Rapids-AP on Birch Stream-AP will be made up of three Redwood Cove compute tiles, with a maximum of 40 cores each, or 120 total. It will have 12-channel DDR5 memory and 96 PCIe Gen 5 lanes with 6 UPI2. Granite Rapids-SP will have 8-channel DDR5 memory, 88 PCIe Gen 5 lanes, and 4 UPI2 lanes for interconnects between processors.

Sierra Forest will be compatible with Granite Rpaids. We're looking at an “E” core count of 384 or 512. The plan doesn't include a tiled design for Sierra Forest, but I highly doubt Intel will design a monolithic 384-core chip. It is more likely that there are multiple tiles of 128 hearts.

Source: YuuKi_Ans.