Xeon Gold 6338T vs EPYC 7742
Primary details
Comparing EPYC 7742 and Xeon Gold 6338T processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 45 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 3.47 | no data |
| Market segment | Server | Server |
| Series | AMD EPYC | no data |
| Power efficiency | 18.45 | no data |
| Architecture codename | Zen 2 (2017−2020) | Ice Lake-SP (2021) |
| Release date | 7 August 2019 (5 years ago) | 6 April 2021 (3 years ago) |
| Launch price (MSRP) | $6,950 | no data |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
EPYC 7742 and Xeon Gold 6338T 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 | 64 (Tetrahexaconta-Core) | 24 (Tetracosa-Core) |
| Threads | 128 | 48 |
| Base clock speed | 2.25 GHz | 2.1 GHz |
| Boost clock speed | 3.4 GHz | 3.4 GHz |
| Multiplier | 22.5 | no data |
| L1 cache | 4 MB | 64K (per core) |
| L2 cache | 32 MB | 1 MB (per core) |
| L3 cache | 256 MB (shared) | 36 MB (shared) |
| Chip lithography | 7 nm, 14 nm | 10 nm |
| Die size | 192 mm2 | no data |
| Maximum case temperature (TCase) | no data | 87 °C |
| Number of transistors | 4,800 million | no data |
| 64 bit support | + | + |
| Windows 11 compatibility | + | + |
| Unlocked multiplier | + | - |
Compatibility
Information on EPYC 7742 and Xeon Gold 6338T 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 | 2 (Multiprocessor) | 2 |
| Socket | TR4 | FCLGA4189 |
| Power consumption (TDP) | 225 Watt | 165 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by EPYC 7742 and Xeon Gold 6338T. You'll probably need this information if you require some particular technology.
| Instruction set extensions | no data | Intel® SSE4.2, Intel® AVX, Intel® AVX2, Intel® AVX-512 |
| AES-NI | + | + |
| AVX | + | + |
| vPro | no data | + |
| Enhanced SpeedStep (EIST) | no data | + |
| Speed Shift | no data | + |
| Turbo Boost Technology | no data | 2.0 |
| Hyper-Threading Technology | no data | + |
| TSX | - | + |
| Precision Boost 2 | + | no data |
| Deep Learning Boost | - | + |
Security technologies
EPYC 7742 and Xeon Gold 6338T technologies aimed at improving security, for example, by protecting against hacks.
| TXT | no data | + |
| EDB | no data | + |
| SGX | no data | Yes with Intel® SPS |
Virtualization technologies
Virtual machine speed-up technologies supported by EPYC 7742 and Xeon Gold 6338T 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 EPYC 7742 and Xeon Gold 6338T. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4 Eight-channel | DDR4-3200 |
| Maximum memory size | 4 TiB | 6 TB |
| Max memory channels | 8 | 8 |
| Maximum memory bandwidth | 204.763 GB/s | no data |
| ECC memory support | + | + |
Peripherals
Specifications and connection of peripherals supported by EPYC 7742 and Xeon Gold 6338T.
| PCIe version | no data | 4.0 |
| PCI Express lanes | no data | 64 |
Pros & cons summary
| Recency | 7 August 2019 | 6 April 2021 |
| Physical cores | 64 | 24 |
| Threads | 128 | 48 |
| Chip lithography | 7 nm | 10 nm |
| Power consumption (TDP) | 225 Watt | 165 Watt |
EPYC 7742 has 166.7% more physical cores and 166.7% more threads, and a 42.9% more advanced lithography process.
Xeon Gold 6338T, on the other hand, has an age advantage of 1 year, and 36.4% lower power consumption.
We couldn't decide between EPYC 7742 and Xeon Gold 6338T. We've got no test results to judge.
Should you still have questions on choice between EPYC 7742 and Xeon Gold 6338T, ask them in Comments section, and we shall answer.
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