Celeron B815 vs Core i7-2620M
Primary details
Comparing Core i7-2620M and Celeron B815 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in performance ranking | 2013 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Laptop |
| Series | Intel Core i7 | Intel Celeron |
| Architecture codename | Sandy Bridge (2011−2013) | Sandy Bridge (2011−2013) |
| Release date | 20 February 2011 (13 years ago) | 1 January 2012 (12 years ago) |
| Launch price (MSRP) | $346 | $86 |
| Current price | $224 (0.6x MSRP) | $34 (0.4x MSRP) |
Detailed specifications
Core i7-2620M 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 | 2 (Dual-core) | 2 (Dual-core) |
| Threads | 4 | 2 |
| Base clock speed | 2.7 GHz | 1.6 GHz |
| Boost clock speed | 3.4 GHz | 1.6 GHz |
| L1 cache | 128 KB | 64K (per core) |
| L2 cache | 512 KB | 256K (per core) |
| L3 cache | 4 MB | 2 MB (shared) |
| Chip lithography | 32 nm | 32 nm |
| Die size | 149 mm2 | 131 mm2 |
| Maximum core temperature | 100 °C | 100 °C |
| Number of transistors | 624 Million | 504 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
| Unlocked multiplier | No | No |
Compatibility
Information on Core i7-2620M 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 | 1 |
| Socket | FCBGA1023,PPGA988 | FCPGA988,PGA988 |
| Power consumption (TDP) | 35 Watt | 35 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core i7-2620M and Celeron B815. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® AVX | Intel® SSE4.1, Intel® SSE4.2 |
| AES-NI | + | - |
| FMA | + | + |
| AVX | + | no data |
| vPro | + | no data |
| Enhanced SpeedStep (EIST) | + | + |
| My WiFi | + | - |
| Turbo Boost Technology | 2.0 | - |
| Hyper-Threading Technology | + | - |
| Idle States | + | + |
| Thermal Monitoring | + | + |
| Flex Memory Access | + | + |
| Demand Based Switching | - | - |
| FDI | + | + |
| Fast Memory Access | + | + |
| Status | Discontinued | Discontinued |
Security technologies
Core i7-2620M and Celeron B815 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | - |
| EDB | + | + |
| Identity Protection | + | no data |
| Anti-Theft | + | - |
Virtualization technologies
Virtual machine speed-up technologies supported by Core i7-2620M and Celeron B815 are enumerated here.
| AMD-V | + | no data |
| VT-d | + | - |
| VT-x | + | + |
| EPT | + | no data |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Core i7-2620M and Celeron B815. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | DDR3 |
| Maximum memory size | 16 GB | 16 GB |
| Max memory channels | 2 | 2 |
| Maximum memory bandwidth | 21.3 GB/s | 21.3 GB/s |
| ECC memory support | - | - |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | Intel HD Graphics 3000 | Intel® HD Graphics for 2nd Generation Intel® Processors |
| Quick Sync Video | + | - |
| Clear Video HD | + | - |
| Graphics max frequency | 1.3 GHz | 1.05 GHz |
| InTru 3D | + | - |
Graphics interfaces
Available interfaces and connections of Core i7-2620M and Celeron B815 integrated GPUs.
| Number of displays supported | 2 | 2 |
| eDP | + | + |
| DisplayPort | + | + |
| HDMI | + | + |
| SDVO | + | + |
| CRT | + | + |
Peripherals
Specifications and connection of peripherals supported by Core i7-2620M and Celeron B815.
| PCIe version | 2.0 | 2.0 |
| PCI Express lanes | 16 | 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.
Benchmark coverage: 68%
Core i7-2620M outperforms Celeron B815 by 233% 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%
Core i7-2620M outperforms Celeron B815 by 108% 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%
Core i7-2620M outperforms Celeron B815 by 137% 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%
Core i7-2620M outperforms Celeron B815 by 107% 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%
Core i7-2620M outperforms Celeron B815 by 134% in Cinebench 10 32-bit multi-core.
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.
Benchmark coverage: 19%
Core i7-2620M outperforms Celeron B815 by 133% in 3DMark06 CPU.
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 Core i7-2620M by 174% in wPrime 32.
Pros & cons summary
| Recency | 20 February 2011 | 1 January 2012 |
| Threads | 4 | 2 |
| Cost | $346 | $86 |
We couldn't decide between Core i7-2620M and Celeron B815. We've got no test results to judge.
Should you still have questions on choice between Core i7-2620M and Celeron B815, ask them in Comments section, and we shall answer.
Similar processor comparisons
We picked several similar comparisons of processors in the same market segment and performance relatively close to those reviewed on this page.
