New Sapphire Rapids 48-core Intel Xeon Platinum 8468 CPU SKUs have been leaked, showing competitive performance against AMD’s Milan.
Intel Xeon Platinum 8468 48-core “Sapphire Rapids” processor trades blows with AMD EPYC 7763 64-core “Milan” chips
The reference discovered by HXL (@9550pro) shows us a technical sample of the Intel Xeon Platinum 8468, one of several Sapphire Rapids-SP processors. Based on the spec sheet that leaked earlier, the Xeon Platinum 8468 will feature 48 cores and 96 threads while using the 10nm ESF process node and Golden Cove core architecture. The processor is expected to feature 105MB of L3 cache and a TDP of 350W. The processor is listed with clocks of 2.1 GHz in Cinebench R23 and 800 MHz in CPU-z, suggesting that the clock speeds are only not close to retail figures.
The processor tested is the 6th Stepping and we know from previous reports that the Sapphire Rapids-SP chips have gone through various stages to fix various bugs the chips have encountered so far. It is reported that the processor was tested in two benchmarks, one being Cinebench R23 and the other being V-Ray. The CPU was tested in a dual-socket configuration with 96 cores and 192 total threads.
As of Cinebench R23, the chip scored 90411 points in multi-core and 1351 points in single-core. The processor is significantly faster than retail EPYC Milan single-core chips and comparable in multi-core tests as the best EPYC 7763 scores around 90,000-95,000 points in the same test. This means that the EPYC 7763 is at best 8.5% faster in terms of multithreaded performance, a difference that can easily be overcome by the final retail clock speeds. The EPYC chip also features 33% more cores.
Compared to an early ES EPYC Genoa chip, the Intel Xeon Platinum 8468 processor with 48 cores and 96 threads or 96 cores and 192 total threads is around 18% slower, but again the Genoa chip offers 33% more threads in more. The full potential of the 96-core EPYC Genoa chips is limited to 256 threads, as this is the maximum thread limit.
We also have V-Ray where the 48-core Intel Xeon Platinum 8468 processors are listed in a 4-socket configuration, but it was actually running a 2-socket configuration. The CPU clock speed is rated a bit higher at 3.0 GHz and the score is rated at 85,766 samples. Here’s how the performance compares to other server chips:
Intel has moved the launch of the Sapphire Rapids-SP Xeon processor to early 2023, so it looks like they will be competing with the EPYC Genoa-X and Bergamo processors by the time they become widely available to x86 server customers. This kind of performance would have been competitive a few years ago against Milan, but with Zen 4 on the horizon, things look bleak for Intel despite the major uplift from Ice Lake-SP now looking too little.
Intel Xeon SP Families (Preview):
|Family branding||Skylake-SP||Lac Cascade-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||Intel3||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
|Basic Architecture||celestial lake||Cascades Lake||Cascades Lake||sunny cove||golden cove||Raptor Cove||Redwood Bay?||Lion’s Cove?|
|Improved CPI (Vs Prev Gen)||ten%||0%||0%||20%||19%||8%?||35%?||39%?|
|References MCP (Multi-Chip Package)||Nope||Yes||Nope||Nope||Yes||Yes||To be determined (maybe yes)||To be determined (maybe yes)|
|Socket||LGA 3647||LGA 3647||LGA 4189||LGA 4189||LGA 4677||LGA 4677||To be determined||To be determined|
|Maximum number of cores||Up to 28||Up to 28||Up to 28||Up to 40||Up to 56||Up to 64?||Up to 120?||Up to 144?|
|Maximum number of threads||Up to 56||Up to 56||Up to 56||Up to 80||Up to 112||Up to 128?||Up to 240?||Up to 288?|
|Maximum 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||6 channel DDR4-2666||DDR4-2933 6 channels||Up to 6 DDR4-3200 channels||Up to 8 DDR4-3200 channels||Up to 8 DDR5-4800 channels||Up to 8 channels DDR5-5600?||Up to 12 DDR5-6400 channels?||Up to 12 DDR6-7200 channels?|
|PCIe generation 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 (PL1)||140W-205W||165W-205W||150W-250W||105-270W||Up to 350W||Up to 375W?||Up to 400W?||Up to 425W?|
|Xpoint Optane 3D DIMMs||N / A||Apache pass||Barlow Collar||Barlow Collar||Raven Pass||Raven 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 EPYC Bergamo||AMD EPYC Torino||AMD EPYC Venice|
#Intel #Xeon #Platinum #Core #Sapphire #Rapids #Processor #Benchmarks #Leaked #Tied #AMDs #Milan #Core #Chips