Celeron B815 vs M 900
Primary details
Comparing Celeron M 900 and Celeron B815 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 | Laptop |
| Series | Intel Celeron M | Intel Celeron |
| Architecture codename | Penryn (2008−2011) | Sandy Bridge (2011−2013) |
| Release date | 1 April 2009 (15 years ago) | 1 January 2012 (12 years ago) |
| Launch price (MSRP) | $70 | $86 |
Detailed specifications
Celeron M 900 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 | 1 (Single-Core) | 2 (Dual-core) |
| Threads | 1 | 2 |
| Base clock speed | no data | 1.6 GHz |
| Boost clock speed | 2.2 GHz | 1.6 GHz |
| Bus type | no data | DMI 2.0 |
| Bus rate | 800 MHz | 4 × 5 GT/s |
| Multiplier | no data | 16 |
| L1 cache | no data | 128 KB |
| L2 cache | 1 MB | 512 KB |
| L3 cache | no data | 2 MB (shared) |
| Chip lithography | 45 nm | 32 nm |
| Die size | 107 mm2 | 131 mm2 |
| Maximum core temperature | 105 °C | 100 °C |
| Number of transistors | 410 Million | 504 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
Compatibility
Information on Celeron M 900 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 | no data | 1 (Uniprocessor) |
| Socket | PGA478 | FCPGA988,PGA988 |
| Power consumption (TDP) | 35 Watt | 35 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Celeron M 900 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 |
| FMA | - | + |
| Enhanced SpeedStep (EIST) | + | + |
| My WiFi | no data | - |
| Turbo Boost Technology | no data | - |
| Hyper-Threading Technology | no data | - |
| Idle States | no data | + |
| Thermal Monitoring | - | + |
| Flex Memory Access | no data | + |
| Demand Based Switching | no data | - |
| FDI | no data | + |
| Fast Memory Access | no data | + |
Security technologies
Celeron M 900 and Celeron B815 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | no data | - |
| EDB | no data | + |
| Anti-Theft | no data | - |
Virtualization technologies
Virtual machine speed-up technologies supported by Celeron M 900 and Celeron B815 are enumerated here.
| VT-d | no data | - |
| VT-x | no data | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Celeron M 900 and Celeron B815. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | no data | DDR3 |
| Maximum memory size | no data | 16 GB |
| Max memory channels | no data | 2 |
| Maximum memory bandwidth | no data | 21.335 GB/s |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | no data | Intel® HD Graphics for 2nd Generation Intel® Processors |
| Graphics max frequency | no data | 1.05 GHz |
Graphics interfaces
Available interfaces and connections of Celeron M 900 and Celeron B815 integrated GPUs.
| Number of displays supported | no data | 2 |
| eDP | no data | + |
| DisplayPort | - | + |
| HDMI | - | + |
| SDVO | no data | + |
| CRT | no data | + |
Peripherals
Specifications and connection of peripherals supported by Celeron M 900 and Celeron B815.
| PCIe version | no data | 2.0 |
| PCI Express lanes | no data | 16 |
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.
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.
3DMark06 CPU
3DMark06 is a discontinued DirectX 9 benchmark suite from Futuremark. Its CPU part contains two scenarios, one dedicated to artificial intelligence pathfinding, another to game physics using PhysX package.
Pros & cons summary
| Recency | 1 April 2009 | 1 January 2012 |
| Physical cores | 1 | 2 |
| Threads | 1 | 2 |
| Chip lithography | 45 nm | 32 nm |
Celeron B815 has an age advantage of 2 years, 100% more physical cores and 100% more threads, and a 40.6% more advanced lithography process.
We couldn't decide between Celeron M 900 and Celeron B815. We've got no test results to judge.
Should you still have questions on choice between Celeron M 900 and Celeron B815, ask them in Comments section, and we shall answer.
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