Typical Limitations & Considerations
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Power & Cooling — 150 W TDP requires robust cooling and power delivery, especially in dense server racks.
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Older platform — Based on 14 nm Skylake-SP; newer Xeon families offer better performance-per-watt and newer platform features (e.g., PCIe 4.0/5.0, newer memory types).
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Platform cost — FCLGA3647 server motherboards, six-channel memory, and enterprise components add platform cost compared with consumer parts.
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Discontinuation / Lifecycle — Parts of the Skylake-SP lineup are mature; for long-term new deployments consider lifecycle and support policies.
Full Specifications (Table)
| Parameter | Details |
|---|---|
| Processor Family | Intel Xeon Scalable (Gold series) |
| Model Number | Xeon Gold 6148 |
| Microarchitecture / Codename | Skylake-SP |
| Manufacturing Process | 14 nm |
| Total Cores | 20 |
| Total Threads | 40 |
| Base Frequency | 2.40 GHz |
| Max Turbo Frequency | 3.70 GHz |
| L1 Cache | 20 × 32 KB (instruction) + 20 × 32 KB (data) = 1.28 MB total |
| L2 Cache | 20 × 1 MB = 20 MB total |
| L3 Cache | 27.5 MB (shared) |
| Thermal Design Power (TDP) | 150 W |
| Maximum Case Temperature (Tcase) | ~78 °C |
| Memory Type | DDR4-2666 ECC Registered |
| Memory Channels | 6 (hexa-channel) |
| Maximum Memory Supported | Up to 768 GB (platform dependent) |
| Memory Bandwidth | Very high (six-channel DDR4 throughput) |
| PCI Express | Up to 48 lanes (PCIe 3.0) |
| Processor Interconnect | Up to 3 × UPI links |
| Socket | FCLGA3647 |
| Instruction Set & Extensions | Intel 64, SSE4.2, AVX, AVX2, AVX-512 |
| Advanced Features | Hyper-Threading, Turbo Boost 2.0, TSX-NI, AES-NI, Speed Shift, VT-x / VT-d |
| Launch | 2017 (Skylake-SP Xeon family) |
| Typical Use | Dual-socket and multi-socket enterprise servers, virtualization, HPC, databases |
| Status | Mature / widely deployed in enterprise; may be discontinued on newer roadmaps |
Highlights & Key Strengths
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High core count with strong multi-threading — 20 cores / 40 threads provide robust parallel throughput for virtualized and multi-tenant environments.
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Balanced single-thread and multi-thread performance — 2.4 GHz base clock with up to 3.7 GHz turbo supports both throughput and latency-sensitive tasks.
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Large shared cache and per-core caches — 27.5 MB L3 plus generous L2/L1 reduce memory latency and improve database and analytics performance.
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Very high memory capacity and bandwidth — Six-channel DDR4-2666 with ECC enables large in-memory datasets, ideal for databases and analytics.
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Rich enterprise feature set — virtualization and security extensions (VT-x/VT-d, AES-NI, TXT), and advanced RAS capabilities for data-center reliability.
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Good I/O expansion — Up to 48 PCIe 3.0 lanes allow many NVMe drives, network adapters, and accelerators.
Recommended Use Cases
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Virtualization hosts & hypervisors — Dense VM consolidation with large memory pools and many vCPUs.
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Database servers — Transactional and in-memory databases that benefit from high memory bandwidth and large caches.
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Cloud & enterprise infrastructure — Reliable 24/7 operation, multitenant workloads, and secure virtualization.
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High-performance computing & analytics — Parallel compute, vectorized code (AVX-512), and data-intensive analytics.
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Storage and I/O-heavy nodes — Systems that attach many NVMe drives or require many PCIe lanes for networking/storage cards.
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