Section by Ian Cutress
The arrival of AMD’s 3rd Generation EPYC processor household, utilizing the brand new Zen Three core, has been hotly anticipated. The promise of a brand new processor core microarchitecture, updates to the connectivity and new safety choices whereas nonetheless retaining platform compatibility are a superb measure of an enterprise platform replace, however the One True Metric is platform efficiency. Seeing Zen Three rating final per-core efficiency management within the client market again in November rose expectations for the same slam-dunk within the enterprise market, and in the present day we get to see these outcomes.
AMD EPYC 7003: 64 Cores of Milan
The headline numbers that AMD is selling with the brand new era of {hardware} is a rise in uncooked efficiency throughput of +19%, on account of enhancements with the brand new core design. On high of this, AMD has new security measures, optimizations for various reminiscence configurations, and up to date efficiency with the Infinity Fabric and connectivity.
Anyone searching for the shorthand specs on the brand new EPYC 7003 sequence, identified by its codename Milan, will see nice familiarity with the earlier era, nevertheless this time round AMD is focusing on a number of totally different design factors.
Milan processors will provide as much as 64 cores and 128 threads, utilizing AMD’s newest Zen Three cores. The processor is designed with eight chiplets of eight cores every, much like Rome, however this time all eight cores within the chiplet are linked, enabling an efficient double L3 cache design for a decrease total cache latency construction. All processors could have 128 lanes of PCIe 4.0, eight channels of reminiscence, with most fashions supporting twin processor connectivity, and new choices for channel reminiscence optimization can be found. All Milan processors must be drop-in appropriate with Rome sequence platforms with a firmware replace.
| AMD EPYC: Generation on Generation | |||
| AnandTech | EPYC 7001 |
EPYC 7002 |
EPYC 7003 |
| Codename | Naples | Rome | Milan |
| Microarchitecture | Zen | Zen 2 | Zen 3 |
| Core Manufacturing | 14nm | 7nm | 7nm |
| Max Cores/Threads | 32 / 64 | 64 / 128 | 64 / 128 |
| Core Complex | 4C + 8MB | 4C + 16MB | 8C + 32MB |
| Memory Support | eight x DDR4-2666 | eight x DDR4-3200 | eight x DDR4-3200 |
| Memory Capacity | 2 TB | Four TB | Four TB |
| PCIe | 3.Zero x128 | 4.Zero x128 | 4.Zero x128 |
| Security | SME SEV |
SME SEV |
SME SEV SNP |
| Peak Power | 180 W | 240 W* | 280 W |
| *Rome launched 280 W for particular HPC mid-cycle | |||
One of the highlights right here is that the brand new era of processors will provide 280 W fashions to all prospects – earlier generations had solely 240 W fashions for all after which 280 W for particular HPC prospects, nevertheless this time round all prospects can allow these excessive efficiency elements with the brand new core design.
This is exemplified if we do direct top-of-stack processor comparisons:
| 2P Top of Stack GA Offerings | |||||
| AnandTech | EPYC 7001 |
EPYC 7002 |
EPYC 7003 |
Intel Xeon |
|
| Processor | 7601 | 7742 | 7763 | 6258R | |
| uArch | Zen | Zen 2 | Zen 3 | Cascade | |
| Cores | 32 | 64 | 64 | 28 | |
| TDP | 180 W | 240 W | 280 W | 205 W | |
| Base Freq | 2200 | 2250 | 2450 | 2700 | |
| Turbo Freq | 3200 | 3400 | 3500 | 4000 | |
| L3 Cache | 64 MB | 256 MB | 256 MB | 37.5 MB | |
| PCIe | 3.Zero x128 | 4.Zero x128 | 4.Zero x128 | 3.Zero x48 | |
| DDR4 | eight x 2666 | eight x 3200 | eight x 3200 | 6 x 2933 | |
| DRAM Cap | 2 TB | Four TB | Four TB | 1 TB | |
| Price | $4200 | $6950 | $7890 | $3950 | |
The new high processor for AMD is the EPYC 7763, a 64-core processor at 280 W TDP providing 2.45 GHz base frequency and three.50 GHz increase frequency. AMD claims that this processor provides +106% efficiency in business benchmarks in comparison with Intel’s finest 2P 28-core…
