Intel Sapphire Rapids-SP is expected to launch later this year but we have seen several Xeon CPUs leak in various benchmarks. The latest benchmarks compare the cache and memory performance of the Xeon chips against AMD’s Milan-X parts.

Intel Sapphire Rapids-SP Xeon vs AMD EPYC 7773X Milan-X Server CPUs: Benchmarks Leak In Cache & Memory Tests

Update: The leaker has posted a new V-Ray and Cinebench benchmarks too comparing the three server chips against each other.

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The latest benchmarks of the Intel Sapphire Rapids-SP Xeon & AMD EPYC Milan-X CPUs have been leaked by YuuKi_AnS. The leaker was the first to get his hands on engineering samples of the Xeon Sapphire Rapids-SP lineup and the latest chip he got is a 48 core part with 96 threads, a 270W TDP, and clock speeds of 2.30 GHz base and 3.30 GHz boost. The CPU rocks 90 MB of L3 cache while the single-core boost frequency is rated at 3.60 GHz. The CPU is an ES chip with QSPEC of ‘QYFQ’ and is a D0 revision.

This variant sits right below the flagship part which has a 1.6 GHz base clock and boosts a clock of 3.6 GHz across a single core. The flagship Intel Sapphire Rapids-SP Xeon CPU will feature 56 cores, 112 threads, a 105 MB L3 cache, and a 350W TDP. The CPU was tested in a dual-socket config with 96 cores and 192 threads which were compared to Intel’s Xeon Platinum 8380 (Ice Lake-SP) and the AMD EPYC 7773X Milan-X CPUs, both of which were also running a dual-socket configuration.

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AMD EPYC 7773X Milan-X CPUs rock 64 cores and 128 thread and were configured with DDR4-2866 memory. The memory type for the Ice Lake-SP and Sapphire Rapids-SP Xeon CPUs isn’t mentioned but the former should feature DDR4-3200 support while the latter comes with DDR5-4800 support.

As for the benchmarks, the chips were tested in the AIDA64 Cache & Memory benchmark. With an 8-channel interface, the Intel Sapphire Rapids-SP Xeon CPUs show vastly superior memory & also latency performance over both AMD’s EPYC Milan-X and Intel’s Ice Lake-SP chips . The CPU cache latency is also looking great but Milan-X does manage to take the crown in the L3 cache tests. The EPYC Milan-X CPUs do get a slight hit to the overall latency but the overall performance is better as mentioned here.

Intel Sapphire Rapids-SP Xeon vs AMD EPYC 7773X Milan-X CPU Benchmarks (Image Credits: YuuKi_AnS):

Intel Sapphire Rapids-SP Xeon vs AMD EPYC 7773X Milan-X Cinebench Benchmarks (Image Credits: YuuKi_AnS):

The Cinebench R15 benchmarks show that the Intel Sapphire Rapids-SP Xeon CPU is up to 9% faster and while it does have 22.5% extra cores, these cores are clocked at a much lower clock speed of 1.50 GHz versus the 2.30 GHz of the Ice Lake-SP parts. The ES chip is not that far behind the AMD EPYC 7773X Milan-X chips and the final version could definitely end up faster. In single-core tests, the Sapphire Rapids-SP chip outperforms the Milan-X CPU by 26% despite the clock advantage going to AMD.

While Intel Sapphire Rapids-SP Xeon CPU looks quite good in these benchmarks, especially in ES state, we have to remember that the lineup will be competing against AMD’s EPYC Genoa by the time it launches and not EPYC Milan-X so team red would still have a major advantage over team blue.

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?
Vector Engines AVX-512/FMA2 AVX-512/FMA2 AVX-512/FMA2 AVX-512/FMA2 AVX-512/FMA2 AVX-512/FMA2 AVX-1024/FMA3? AVX-1024/FMA3?
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)
Launch 2017 2018 2020 2021 2022 2023? 2024? 2025?