Celeron B815 vs Atom x7-Z8700
Primary details
Comparing Atom x7-Z8700 and Celeron B815 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in performance ranking | 2471 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Laptop |
| Series | 7x Intel Atom | Intel Celeron |
| Architecture codename | Cherry Trail (2016) | Sandy Bridge (2011−2013) |
| Release date | 2 March 2015 (9 years ago) | 1 January 2012 (12 years ago) |
| Launch price (MSRP) | no data | $86 |
| Current price | $377 | $34 (0.4x MSRP) |
Detailed specifications
Atom x7-Z8700 and Celeron B815 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) | 2 (Dual-core) |
| Threads | 4 | 2 |
| Base clock speed | 1.6 GHz | 1.6 GHz |
| Boost clock speed | 2.4 GHz | 1.6 GHz |
| Bus support | no data | 4 × 5 GT/s |
| L1 cache | no data | 128 KB |
| L2 cache | 2 MB | 512 KB |
| L3 cache | 0 KB | 2 MB (shared) |
| Chip lithography | 14 nm | 32 nm |
| Die size | no data | 131 mm2 |
| Maximum core temperature | 90 °C | 100 °C |
| Number of transistors | no data | 504 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
| Unlocked multiplier | No | No |
Compatibility
Information on Atom x7-Z8700 and Celeron B815 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) | 1 |
| Socket | UTFCBGA1380 | FCPGA988,PGA988 |
| Power consumption (TDP) | no data | 35 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Atom x7-Z8700 and Celeron B815. You'll probably need this information if you require some particular technology.
| Instruction set extensions | no data | Intel® SSE4.1, Intel® SSE4.2 |
| AES-NI | + | - |
| FMA | no data | + |
| Enhanced SpeedStep (EIST) | no data | + |
| My WiFi | no data | - |
| Turbo Boost Technology | no data | - |
| Hyper-Threading Technology | no data | - |
| Idle States | no data | + |
| Thermal Monitoring | no data | + |
| Flex Memory Access | no data | + |
| Demand Based Switching | no data | - |
| FDI | no data | + |
| Fast Memory Access | no data | + |
| Status | Discontinued | Discontinued |
Security technologies
Atom x7-Z8700 and Celeron B815 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | no data | - |
| EDB | no data | + |
| Secure Boot | + | no data |
| Identity Protection | + | no data |
| Anti-Theft | no data | - |
Virtualization technologies
Virtual machine speed-up technologies supported by Atom x7-Z8700 and Celeron B815 are enumerated here.
| VT-d | no data | - |
| VT-x | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Atom x7-Z8700 and Celeron B815. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | DDR3 |
| Maximum memory size | 8 GB | 16 GB |
| Max memory channels | 2 | 2 |
| Maximum memory bandwidth | 25.6 GB/s | 21.3 GB/s |
| ECC memory support | no data | - |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | Intel HD Graphics | Intel® HD Graphics for 2nd Generation Intel® Processors |
| Max video memory | 8 GB | no data |
| Graphics max frequency | 600 MHz | 1.05 GHz |
| Execution Units | 16 | no data |
Graphics interfaces
Available interfaces and connections of Atom x7-Z8700 and Celeron B815 integrated GPUs.
| Number of displays supported | 3 | 2 |
| eDP | no data | + |
| DisplayPort | no data | + |
| HDMI | no data | + |
| SDVO | no data | + |
| CRT | no data | + |
Graphics image quality
Maximum display resolutions supported by Atom x7-Z8700 and Celeron B815 integrated GPUs, including resolutions over different interfaces.
| Max resolution over HDMI 1.4 | 3840x2160 | no data |
| Max resolution over eDP | 2560x1600 | no data |
Peripherals
Specifications and connection of peripherals supported by Atom x7-Z8700 and Celeron B815.
| PCIe version | 2.0 | 2.0 |
| PCI Express lanes | 2 | 16 |
| USB revision | 3.0 | no data |
| Number of USB ports | 3 | no data |
Synthetic benchmark performance
Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.
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.
Benchmark coverage: 68%
Atom x7-Z8700 outperforms Celeron B815 by 82% in Passmark.
GeekBench 5 Single-Core
GeekBench 5 Single-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses only a single CPU core.
Benchmark coverage: 42%
Celeron B815 outperforms Atom x7-Z8700 by 37% in GeekBench 5 Single-Core.
GeekBench 5 Multi-Core
GeekBench 5 Multi-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses all available CPU cores.
Benchmark coverage: 42%
Atom x7-Z8700 outperforms Celeron B815 by 20% in GeekBench 5 Multi-Core.
Cinebench 10 32-bit single-core
Cinebench R10 is an ancient ray tracing benchmark for processors by Maxon, authors of Cinema 4D. Its single core version uses just one CPU thread to render a futuristic looking motorcycle.
Benchmark coverage: 20%
Celeron B815 outperforms Atom x7-Z8700 by 88% in Cinebench 10 32-bit single-core.
Cinebench 10 32-bit multi-core
Cinebench Release 10 Multi Core is a variant of Cinebench R10 using all the processor threads. Possible number of threads is limited by 16 in this version.
Benchmark coverage: 19%
Celeron B815 outperforms Atom x7-Z8700 by 29% in Cinebench 10 32-bit multi-core.
wPrime 32
wPrime 32M is a math multi-thread processor test, which calculates square roots of first 32 million integer numbers. Its result is measured in seconds, so that the less is benchmark result, the faster the processor.
Benchmark coverage: 18%
Celeron B815 outperforms Atom x7-Z8700 by 81% in wPrime 32.
Pros & cons summary
| Recency | 2 March 2015 | 1 January 2012 |
| Physical cores | 4 | 2 |
| Threads | 4 | 2 |
| Chip lithography | 14 nm | 32 nm |
We couldn't decide between Atom x7-Z8700 and Celeron B815. We've got no test results to judge.
Should you still have questions on choice between Atom x7-Z8700 and Celeron B815, ask them in Comments section, and we shall answer.
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