EPYC 7643P vs Xeon Gold 6138
Aggregate performance score
EPYC 7643P outperforms Xeon Gold 6138 by a whopping 183% based on our aggregate benchmark results.
Primary details
Comparing Xeon Gold 6138 and EPYC 7643P processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 459 | 50 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 4.44 | 13.71 |
| Market segment | Server | Server |
| Series | Intel Xeon Gold | no data |
| Power efficiency | 11.57 | 18.18 |
| Architecture codename | Skylake (server) (2017−2018) | Milan (2021−2023) |
| Release date | 25 April 2017 (7 years ago) | 5 September 2023 (1 year ago) |
| Launch price (MSRP) | $2,612 | $2,722 |
Cost-effectiveness evaluation
Performance per price, higher is better.
EPYC 7643P has 209% better value for money than Xeon Gold 6138.
Detailed specifications
Xeon Gold 6138 and EPYC 7643P basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.
| Physical cores | 20 (Icosa-Core) | 48 (Octatetraconta-Core) |
| Threads | 40 | 96 |
| Base clock speed | 2 GHz | 2.3 GHz |
| Boost clock speed | 3.7 GHz | 3.6 GHz |
| Bus type | DMI 3.0 | no data |
| Bus rate | 4 × 8 GT/s | no data |
| Multiplier | 20 | no data |
| L1 cache | 1.25 MB | 64 KB (per core) |
| L2 cache | 20 MB | 512 KB (per core) |
| L3 cache | 27.5 MB | 256 MB (shared) |
| Chip lithography | 14 nm | 7 nm |
| Die size | no data | 8x 81 mm2 |
| Maximum core temperature | 86 °C | no data |
| Number of transistors | no data | 33,200 million |
| 64 bit support | + | - |
| Windows 11 compatibility | + | no data |
Compatibility
Information on Xeon Gold 6138 and EPYC 7643P compatibility with other computer components: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.
| Number of CPUs in a configuration | 4 (Multiprocessor) | 1 |
| Socket | FCLGA3647 | SP3 |
| Power consumption (TDP) | 125 Watt | 225 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Xeon Gold 6138 and EPYC 7643P. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® AVX-512 | no data |
| AES-NI | + | + |
| AVX | + | + |
| vPro | + | no data |
| Enhanced SpeedStep (EIST) | + | no data |
| Speed Shift | + | no data |
| Turbo Boost Technology | 2.0 | no data |
| Hyper-Threading Technology | + | no data |
| TSX | + | - |
| Turbo Boost Max 3.0 | - | no data |
| Precision Boost 2 | no data | + |
Security technologies
Xeon Gold 6138 and EPYC 7643P technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | no data |
| EDB | + | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Xeon Gold 6138 and EPYC 7643P are enumerated here.
| AMD-V | - | + |
| VT-d | + | no data |
| VT-x | + | no data |
| EPT | + | no data |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Xeon Gold 6138 and EPYC 7643P. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4-2666 | DDR4 |
| Maximum memory size | 768 GB | no data |
| Max memory channels | 6 | no data |
| Maximum memory bandwidth | 128.001 GB/s | no data |
| ECC memory support | + | - |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | no data | N/A |
Peripherals
Specifications and connection of peripherals supported by Xeon Gold 6138 and EPYC 7643P.
| PCIe version | 3.0 | 4.0 |
| PCI Express lanes | 48 | 128 |
Synthetic benchmark performance
Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.
Combined synthetic benchmark score
This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.
Passmark
Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.
Pros & cons summary
| Performance score | 15.28 | 43.23 |
| Recency | 25 April 2017 | 5 September 2023 |
| Physical cores | 20 | 48 |
| Threads | 40 | 96 |
| Chip lithography | 14 nm | 7 nm |
| Power consumption (TDP) | 125 Watt | 225 Watt |
Xeon Gold 6138 has 80% lower power consumption.
EPYC 7643P, on the other hand, has a 182.9% higher aggregate performance score, an age advantage of 6 years, 140% more physical cores and 140% more threads, and a 100% more advanced lithography process.
The EPYC 7643P is our recommended choice as it beats the Xeon Gold 6138 in performance tests.
Should you still have questions on choice between Xeon Gold 6138 and EPYC 7643P, ask them in Comments section, and we shall answer.
Similar processor comparisons
We picked several similar comparisons of processors in the same market segment and performance relatively close to those reviewed on this page.
