The specifications of AMD’s Genoa- Epyc and Intel’s Sapphire-Rapids- Xeon show that the CPUs require more energy than previous chips.

A Sapphire Rapids(Image: Intel)

The specifications of many upcoming server CPUs from AMD and Intel are currently circulating on Twitter (via YuuKi_AnS ), which can be considered realistic: The Epyc 7004, internally called Genoa , should have up to 96 cores and up to 350 watts, the Xeon SP v4 alias Sapphire Rapids with up to 60 cores and up to 360 watts.

According to the data, the Epyc 9654P with 96C/192T should become AMD’s top model and clock at 2.0 to 2.15 GHz. On the other hand, the Xeon Platinum 8490H with 60C/120T at 1.9 to 2.9 GHz is the fastest CPU that Intel plans to release.

It gets interesting in the lower areas: There is, for example, the Epyc 9354 with 32C/64T at 2.75 to 2.85 GHz and 290 watts on the AMD side and the Xeon Gold 6454Y+ with 32C/64T at 2.6 to 3.8 GHz at 270 watts at Intel.

Sapphire Rapids will appear later

While the 96 cores and 12-channel memory interface are uncatchable for Intel at the top end, there seems to be similar offers below. In the end, however, price and availability are decisive – where AMD is apparently better positioned: The Epyc 7004 should appear in autumn 2022, while Sapphire Rapids seems to be postponed to 2023.

AMD is continuing the previous chiplet approach with Genoa: There is one 6 nm I/O die and up to eight 5 nm compute dies per package, which results in up to 96 cores and up to 384 MB L3 cache . The memory interface of the SDP5 socket has twelve DDR5 channels, plus PCIe Gen5 for accelerators or SSDs.

Intel, on the other hand, is switching from a monolithic design to chiplets for the first time, the manufacturer speaks of tiles: Sapphire Rapids consists of up to four Intel 7 dies with 15 CPU cores and two DDR5 controllers. This results in up to 60 cores and an eight-channel DDR5 interface, with the LGA 4667 socket also supporting PCIe Gen5.