Xeon 6503P-B vs Atom Z650
Contents
Primary details
Comparing processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | not rated | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Server |
| Series | Intel Atom | no data |
| Designer | Intel | Intel |
| Manufacturer | Intel | Intel |
| Architecture codename | Lincroft (2010−2011) | Granite Rapids (2024−2025) |
| Release date | 11 April 2011 (14 years ago) | 24 February 2025 (less than a year ago) |
| Launch price (MSRP) | no data | $934 |
Detailed specifications
Atom Z650 and Xeon 6503P-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 | 1 (Single-Core) | 12 (Dodeca-Core) |
| Performance-cores | no data | 12 |
| Threads | 2 | 24 |
| Base clock speed | 1.2 GHz | 2 GHz |
| Boost clock speed | 1.2 GHz | 3.5 GHz |
| Bus type | cDMI | no data |
| Bus rate | 400 MT/s | no data |
| Multiplier | 8 | no data |
| L1 cache | 64K (per core) | 112 KB (per core) |
| L2 cache | 512 KB (per core) | 2 MB (per core) |
| L3 cache | 0 KB | 48 MB (shared) |
| Chip lithography | 45 nm | Intel 3 nm |
| Die size | 65 mm2 | 598 mm2 |
| Maximum core temperature | 90 °C | no data |
| Maximum case temperature (TCase) | no data | 85 °C |
| Number of transistors | 140 million | no data |
| 64 bit support | - | + |
| Windows 11 compatibility | - | no data |
Compatibility
Information on Atom Z650 and Xeon 6503P-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 (Uniprocessor) | 2 |
| Socket | T-PBGA518 | FCBGA4368 |
| Power consumption (TDP) | 3 Watt | 110 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Atom Z650 and Xeon 6503P-B. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® SSE, Intel® SSE2, Intel® SSE3 | Intel® AMX, Intel® SSE4.2, Intel® AVX, Intel® AVX2, Intel® AVX-512 |
| AES-NI | - | + |
| AVX | - | + |
| Enhanced SpeedStep (EIST) | + | - |
| QuickAssist | no data | + |
| Speed Shift | no data | - |
| Turbo Boost Technology | no data | 2.0 |
| Hyper-Threading Technology | + | + |
| TSX | - | + |
| Idle States | + | no data |
| Thermal Monitoring | + | - |
| Deep Learning Boost | - | + |
Security technologies
Atom Z650 and Xeon 6503P-B technologies aimed at improving security, for example, by protecting against hacks.
| TXT | no data | + |
| EDB | + | + |
| SGX | no data | Yes with Intel® SPS |
Virtualization technologies
Virtual machine speed-up technologies supported by Atom Z650 and Xeon 6503P-B are enumerated here.
| VT-d | - | + |
| VT-x | - | + |
| EPT | no data | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Atom Z650 and Xeon 6503P-B. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR2 | DDR5 |
| Maximum memory size | 2.93 GB | 1.13 TB |
| Max memory channels | 1 | 4 |
| Maximum memory bandwidth | 3.2 GB/s | no data |
| ECC memory support | - | + |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | PowerVR SGX535 | N/A |
Graphics interfaces
Available interfaces and connections of Atom Z650 and Xeon 6503P-B integrated GPUs.
| LVDS | + | no data |
Peripherals
Specifications and connection of peripherals supported by Atom Z650 and Xeon 6503P-B.
| PCIe version | no data | 5.0 |
| PCI Express lanes | no data | 48 |
| PCI support | - | no data |
| Integrated LAN | no data | + |
Pros & cons summary
| Recency | 11 April 2011 | 24 February 2025 |
| Physical cores | 1 | 12 |
| Threads | 2 | 24 |
| Power consumption (TDP) | 3 Watt | 110 Watt |
Atom Z650 has 3566.7% lower power consumption.
Xeon 6503P-B, on the other hand, has an age advantage of 13 years, and 1100% more physical cores and 1100% more threads.
We couldn't decide between Intel Atom Z650 and Intel Xeon 6503P-B. We've got no test results to judge.
Be aware that Atom Z650 is a notebook processor while Xeon 6503P-B is a server/workstation one.
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