Intel Emeralds Rapids-SP, Granite Rapids-SP & Diamond Rapids-SP Xeon CPUs Detailed – 64 Golden Cove Cores in 2023, Raptor Cove in 2024, Next-Gen By 2025
While Intel has shared a plethora of information regarding their next-generation products including the Sapphire Rapids-SP Xeon CPU family during their Architecture Day 2021, Moore's Law is Dead is unveiling information on the products beyond that which include Emerald Rapids, Granite Rapids & Diamond Rapids.
Intel's Next-Gen Emerald Rapids-SP, Granite Rapids-SP, Diamond Rapids-SP Xeon CPU Detailed - Golden Cove Versus Zen 4 in 2023 And A Post-Core Architecture Versus Zen 5 By 2025
The Intel Sapphire Rapids-SP Xeon CPUs will be the first to introduce a multi-tile chiplet design as we detailed here. The SOC will pack the latest Golden Cove core architecture which is also going to power the Alder Lake lineup. The blue team plans to offer a maximum of 56 cores and 112 threads with up to 350W TDP. AMD on the other hand will be offering up to 96 cores and 192 threads at up to 400W TDP with its EPYC Genoa processors. AMD would also hold a big advantage when it comes to cache sizes, IO capabilities, & more (higher PCIe lanes, higher DDR5 capacities, higher L3 cache).
AMD has really turned the tides with its Zen-powered EPYC CPUs within the server segment but it looks like Intel is planning to make a resurgence with its upcoming Xeon CPU families. The first of its course correction will be Emerald Rapids which is expected to launch in Q1 2023.
Intel Emerald Rapids-SP Xeon CPU Family
According to the leak, Intel's Emerald Rapids-SP Xeon CPU family will be based upon a mature 'Intel 7' node. You can think of it as a 2nd Gen 'Intel 7' node which would lead to slightly higher efficiency. Emerald Rapids is expected to make use of the Raptor Cove core architecture which is an optimized variant of the Golden Cove core that will deliver 5-10% IPC improvement over Golden Cove cores. It will also pack up to 64 cores and 128 threads which is a small core bump over the 56 cores and 112 threads featured on Sapphire Rapids chips.
MLID reports that by the time Intel released Emerald Rapids-SP Xeon CPUs, AMD will already have released its Zen 4 powered EPYC Genoa chips so the Xeon lineup may end up being too little & too late with only Intel's advanced instruction sets backing them up in niche workloads. A good thing for Emerald Rapids would be that it will remain compatible with the Eagle Stream platform (LGA 4677) and will offer increased PCIe lanes of up to 80 (Gen 5) and faster DDR5-5600 memory speeds.
Intel Granite Rapids-SP Xeon CPU Family
Moving over to Granite Rapids-SP, this is where Intel really starts to make some big changes to its lineup. As of right now, Intel has confirmed that its Granite Rapids-SP Xeon CPUs will be based on the 'Intel 4' process node (Formely 7nm EUV) but according to this leaked info, the placement for Granite Rapids is moving on roadmaps so we aren't exactly sure when the chips will actually come to market. A possibility is sometime between 2023 and 2024 as Emerald Rapids will be serving as an intermediary solution and not a proper Xeon family replacement.
It is stated that Granite Rapids-SP Xeon chips will utilize the Redwood Cove core architecture and feature increased core counts though the exact number is not provided. Intel did tease a high-level overview of its Granite Rapids-SP CPU during its 'Accelerated' keynote which seemed to feature several dies packaged in a single SOC through EMIB. We can see HBM packages along with high-bandwidth Rambo Cache packages. The Compute tile seems to be composed of 60 cores per die which equals 120 cores in total but we should expect a few of those cores to be disabled to get better yields on the new Intel 4 process node.
AMD will be increasing the core counts of its own Zen 4 EPYC lineup with Bergamo, pushing out up to 128 cores and 256 threads so, despite Intel doubling its core count, they still might not be able to match AMD's disruptive multi-threaded and multi-core lead. But in terms of IPC, this is where Intel might start getting close to AMD's Zen architecture in the server segment and back in the game.
Intel Diamond Rapids-SP Xeon CPU Family
Come Diamond Rapids-SP and Intel might finally have its big win against AMD since its first EPYC launch back in 2017. Diamond Rapids Xeon CPUs are touted as 'The Big One' in the leak and are expected to launch by 2025 with a radical new architecture that will be positioned against Zen 5. The EPYC Turin lineup based on Zen 5 won't be coming slowly as AMD will be aware of Intel planning a comeback in the data center and server segment. So far, there are no details available as for what architecture or core count the new chips will offer but they will offer compatibility on the same Birch Stream and Mountain Stream platforms that will also support Granite Rapids-SP chips.
The Diamond Rapids-SP lineup isn't expected by 2025 so it's still far off. There's also Sierra Forest mentioned which is not a successor but a variation of the Diamond Rapid-SP Xeon lineup that will be aimed at certain customers like AMD's Bergamo or the HBM variants of Sapphire Rapids-SP. It will definitely come after Diamond Rapids-SP by 2026.
Intel Xeon SP Families:
|Family Branding||Skylake-SP||Cascade Lake-SP/AP||Cooper Lake-SP||Ice Lake-SP||Sapphire Rapids||Emerald Rapids||Granite Rapids||Diamond Rapids|
|Process Node||14nm+||14nm++||14nm++||10nm+||Intel 7||Intel 7||Intel 4||Intel 3?|
|Platform Name||Intel Purley||Intel Purley||Intel Cedar Island||Intel Whitley||Intel Eagle Stream||Intel Eagle Stream||Intel Mountain Stream|
Intel Birch Stream
|Intel Mountain Stream
Intel Birch Stream
|Core Architecture||Skylake||Cascade Lake||Cascade Lake||Sunny Cove||Golden Cove||Raptor Cove||Redwood Cove?||Lion Cove?|
|IPC Improvement (Vs Prev Gen)||10%||0%||0%||20%||19%||8%?||35%?||39%?|
|MCP (Multi-Chip Package) SKUs||No||Yes||No||No||Yes||Yes||TBD (Possibly Yes)||TBD (Possibly Yes)|
|Socket||LGA 3647||LGA 3647||LGA 4189||LGA 4189||LGA 4677||LGA 4677||TBD||TBD|
|Max Core Count||Up To 28||Up To 28||Up To 28||Up To 40||Up To 56||Up To 64?||Up To 120?||Up To 144?|
|Max Thread Count||Up To 56||Up To 56||Up To 56||Up To 80||Up To 112||Up To 128?||Up To 240?||Up To 288?|
|Max L3 Cache||38.5 MB L3||38.5 MB L3||38.5 MB L3||60 MB L3||105 MB L3||120 MB L3?||240 MB L3?||288 MB L3?|
|Memory Support||DDR4-2666 6-Channel||DDR4-2933 6-Channel||Up To 6-Channel DDR4-3200||Up To 8-Channel DDR4-3200||Up To 8-Channel DDR5-4800||Up To 8-Channel DDR5-5600?||Up To 12-Channel DDR5-6400?||Up To 12-Channel DDR6-7200?|
|PCIe Gen Support||PCIe 3.0 (48 Lanes)||PCIe 3.0 (48 Lanes)||PCIe 3.0 (48 Lanes)||PCIe 4.0 (64 Lanes)||PCIe 5.0 (80 lanes)||PCIe 5.0 (80 Lanes)||PCIe 6.0 (128 Lanes)?||PCIe 6.0 (128 Lanes)?|
|TDP Range||140W-205W||165W-205W||150W-250W||105-270W||Up To 350W||Up To 375W?||Up To 400W?||Up To 425W?|
|3D Xpoint Optane DIMM||N/A||Apache Pass||Barlow Pass||Barlow Pass||Crow Pass||Crow Pass?||Donahue Pass?||Donahue Pass?|
|Competition||AMD EPYC Naples 14nm||AMD EPYC Rome 7nm||AMD EPYC Rome 7nm||AMD EPYC Milan 7nm+||AMD EPYC Genoa ~5nm||AMD Next-Gen EPYC (Post Genoa)||AMD Next-Gen EPYC (Post Genoa)||AMD Next-Gen EPYC (Post Genoa)|