Xeon 6516P-B vs A4 Micro-6400T
Contents
Primary details
Comparing processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 3021 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Server |
| Series | AMD A-Series | no data |
| Power efficiency | 13.08 | no data |
| Designer | AMD | Intel |
| Manufacturer | GlobalFoundries | Intel |
| Architecture codename | Mullins (2014) | Granite Rapids (2024−2025) |
| Release date | 29 April 2014 (11 years ago) | 24 February 2025 (less than a year ago) |
| Launch price (MSRP) | no data | $1,544 |
Detailed specifications
A4 Micro-6400T and Xeon 6516P-B 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 | 4 (Quad-Core) | 20 (Icosa-Core) |
| Performance-cores | no data | 20 |
| Threads | 4 | 40 |
| Base clock speed | 1 GHz | 2.3 GHz |
| Boost clock speed | 1.6 GHz | 3.5 GHz |
| L1 cache | no data | 112 KB (per core) |
| L2 cache | 2048 KB | 2 MB (per core) |
| L3 cache | no data | 80 MB (shared) |
| Chip lithography | 28 nm | Intel 3 nm |
| Die size | 107 mm2 | 598 mm2 |
| Maximum case temperature (TCase) | no data | 85 °C |
| Number of transistors | 930 million | no data |
| 64 bit support | + | + |
| Windows 11 compatibility | - | no data |
Compatibility
Information on A4 Micro-6400T and Xeon 6516P-B 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 | 1 | 2 |
| Socket | FT3b | FCBGA4368 |
| Power consumption (TDP) | 5 Watt | 145 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by A4 Micro-6400T and Xeon 6516P-B. You'll probably need this information if you require some particular technology.
| Instruction set extensions | 86x SSE (1, 2, 3, 3S, 4.1, 4.2, 4A),-64, AES, AVX | Intel® AMX, Intel® SSE4.2, Intel® AVX, Intel® AVX2, Intel® AVX-512 |
| AES-NI | + | + |
| FMA | FMA4 | - |
| AVX | + | + |
| PowerNow | + | - |
| PowerGating | + | - |
| VirusProtect | + | - |
| Enhanced SpeedStep (EIST) | no data | - |
| QuickAssist | no data | + |
| Speed Shift | no data | - |
| Turbo Boost Technology | no data | 2.0 |
| Hyper-Threading Technology | no data | + |
| TSX | - | + |
| Deep Learning Boost | - | + |
Security technologies
A4 Micro-6400T and Xeon 6516P-B 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 A4 Micro-6400T and Xeon 6516P-B are enumerated here.
| AMD-V | + | - |
| VT-d | no data | + |
| VT-x | no data | + |
| EPT | no data | + |
| IOMMU 2.0 | + | - |
Memory specs
Types, maximum amount and channel quantity of RAM supported by A4 Micro-6400T and Xeon 6516P-B. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3-1333 | DDR5 |
| Maximum memory size | no data | 1.13 TB |
| Max memory channels | 1 | 4 |
| ECC memory support | - | + |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | AMD Radeon R3 Graphics | N/A |
| Enduro | + | - |
| Switchable graphics | + | - |
| UVD | + | - |
| VCE | + | - |
Graphics interfaces
Available interfaces and connections of A4 Micro-6400T and Xeon 6516P-B integrated GPUs.
| DisplayPort | + | - |
| HDMI | + | - |
Graphics API support
APIs supported by A4 Micro-6400T and Xeon 6516P-B integrated GPUs, sometimes API versions are included.
| DirectX | DirectX® 12 | no data |
| Vulkan | + | - |
Peripherals
Specifications and connection of peripherals supported by A4 Micro-6400T and Xeon 6516P-B.
| PCIe version | 2.0 | 5.0 |
| PCI Express lanes | no data | 48 |
| PCI support | no data | Gen 4, Gen 5 |
| Integrated LAN | no data | + |
Pros & cons summary
| Recency | 29 April 2014 | 24 February 2025 |
| Physical cores | 4 | 20 |
| Threads | 4 | 40 |
| Power consumption (TDP) | 5 Watt | 145 Watt |
A4 Micro-6400T has 2800% lower power consumption.
Xeon 6516P-B, on the other hand, has an age advantage of 10 years, and 400% more physical cores and 900% more threads.
We couldn't decide between AMD A4 Micro-6400T and Intel Xeon 6516P-B. We've got no test results to judge.
Be aware that A4 Micro-6400T is a notebook processor while Xeon 6516P-B is a server/workstation one.
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