Intel's upcoming Emerald Rapids-SP Xeon CPUs launching in Q4 2023 are rumored to get a major boost in L3 cache while offering up to 64 cores.
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 & 128 threads which is a small core bump over the 56 cores & 112 threads featured on Sapphire Rapids chips.
Now as per HXL (@9550pro), it seems like the Emerald Rapids-SP Xeon CPUs will be peaking out at 64 cores and available in 1S/2S server configurations. The 4S-8S platforms will have to wait till the next-generation Granite Rapids-SP Xeon chips for an upgrade. But with that said, one key area that is expected to see a huge boost on Emerald Rapids-SP Xeon CPUs is the L3 cache. It is reported that the Emerald Rapids-SP CPUs will pack up to 320 MB of L3 cache. This is 2.84x higher than the 112.5 MB L3 cache featured on the top Sapphire Rapids-SP chip, the Xeon 8490H.
Raptor Lake-S→Raptor Lake-S RefreshRaptor Lake-HX→Raptor Lake-HX Refresh
Emerald Rapids (Only 1S-2S) 64C 320 MB L3 Cache
— HXL (@9550pro) March 17, 2023
The interesting part is that this is just the L3 cache and while it is slightly lower than the 384 MB of L3 cache featured on AMD's top EPYC 9654 chip which rounds up to 480 MB if we combine the L2 cache, the Emerald Rapids-SP CPU can come even close if we combine its plausible L2 pool with the L3 cache. The current Sapphire Rapids-SP CPUs feature 2 MB of L2 cache per
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