Atom Z625 vs Xeon W3520
Primary details
Comparing Xeon W3520 and Atom Z625 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 1986 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 0.27 | no data |
| Market segment | Server | Laptop |
| Series | no data | Intel Atom |
| Power efficiency | 1.34 | no data |
| Architecture codename | Bloomfield (2008−2010) | Lincroft (2010−2011) |
| Release date | 30 March 2009 (15 years ago) | 4 May 2010 (14 years ago) |
| Launch price (MSRP) | $404 | no data |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Xeon W3520 and Atom Z625 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) | 1 (Single-Core) |
| Threads | 8 | 2 |
| Base clock speed | 2.66 GHz | 1.9 GHz |
| Boost clock speed | 2.93 GHz | 1.5 GHz |
| Bus type | no data | cDMI |
| Bus rate | no data | 400 MT/s |
| Multiplier | no data | 15 |
| L1 cache | 64 KB (per core) | 56 KB |
| L2 cache | 256 KB (per core) | 512 KB (per core) |
| L3 cache | 8 MB (shared) | 0 KB |
| Chip lithography | 45 nm | 45 nm |
| Die size | 263 mm2 | 65.2526 mm2 |
| Maximum core temperature | 68 °C | +90 °C |
| Number of transistors | 731 million | 140 million |
| 64 bit support | + | - |
| Windows 11 compatibility | - | - |
Compatibility
Information on Xeon W3520 and Atom Z625 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 | 1 (Uniprocessor) |
| Socket | FCLGA1366 | T-PBGA518 |
| Power consumption (TDP) | 130 Watt | 2.2 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Xeon W3520 and Atom Z625. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® SSE4.2 | Intel® SSE, Intel® SSE2, Intel® SSE3, Intel® SSSE3 |
| Enhanced SpeedStep (EIST) | + | + |
| Turbo Boost Technology | 1.0 | - |
| Hyper-Threading Technology | + | + |
| Idle States | + | + |
| Thermal Monitoring | - | + |
| Flex Memory Access | no data | - |
| Demand Based Switching | + | - |
| PAE | 36 Bit | 32 Bit |
| GPIO | no data | + |
| FDI | no data | - |
| Fast Memory Access | no data | - |
| AMT | no data | - |
| Matrix Storage | no data | - |
| Quiet System | no data | - |
| I/O Acceleration | no data | - |
| Quick Resume | no data | - |
| HD Audio | no data | - |
Security technologies
Xeon W3520 and Atom Z625 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | - |
| EDB | + | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Xeon W3520 and Atom Z625 are enumerated here.
| VT-d | no data | - |
| VT-x | + | - |
| EPT | + | no data |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Xeon W3520 and Atom Z625. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | DDR2 |
| Maximum memory size | 24 GB | 2 GB |
| Max memory channels | 3 | 1 |
| Maximum memory bandwidth | 25.6 GB/s | 3.2 GB/s |
| ECC memory support | + | - |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | N/A | PowerVR SGX535 |
| Clear Video | no data | + |
Graphics interfaces
Available interfaces and connections of Xeon W3520 and Atom Z625 integrated GPUs.
| LVDS | no data | + |
| MIPI | no data | + |
Peripherals
Specifications and connection of peripherals supported by Xeon W3520 and Atom Z625.
| PCIe version | 2.0 | - |
| PCI support | no data | - |
| USB revision | no data | 2.0 |
| Integrated IDE | no data | - |
| Number of USB ports | no data | 4 |
| Integrated LAN | no data | - |
| UART | no data | + |
Pros & cons summary
| Recency | 30 March 2009 | 4 May 2010 |
| Physical cores | 4 | 1 |
| Threads | 8 | 2 |
| Power consumption (TDP) | 130 Watt | 2 Watt |
Xeon W3520 has 300% more physical cores and 300% more threads.
Atom Z625, on the other hand, has an age advantage of 1 year, and 6400% lower power consumption.
We couldn't decide between Xeon W3520 and Atom Z625. We've got no test results to judge.
Be aware that Xeon W3520 is a server/workstation processor while Atom Z625 is a notebook one.
Should you still have questions on choice between Xeon W3520 and Atom Z625, ask them in Comments section, and we shall answer.
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