Celeron G5905 vs Atom E645CT
Primary details
Comparing Atom E645CT and Celeron G5905 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | not rated | 2020 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Desktop processor |
| Power efficiency | no data | 2.86 |
| Architecture codename | Stellarton (2010) | no data |
| Release date | 22 November 2010 (14 years ago) | 1 July 2020 (4 years ago) |
Detailed specifications
Atom E645CT and Celeron G5905 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) | no data |
| Threads | 2 | 2 |
| Base clock speed | no data | 3.5 GHz |
| Boost clock speed | 1 GHz | no data |
| Bus rate | no data | 8 GT/s |
| L1 cache | 64 KB (per core) | no data |
| L2 cache | 512 KB (per core) | no data |
| L3 cache | 0 KB | 4 MB Intel® Smart Cache |
| Chip lithography | 45 nm | 14 nm |
| Die size | 26 mm2 | no data |
| Maximum core temperature | no data | 100 °C |
| Number of transistors | 47 million | no data |
| 64 bit support | - | + |
| Windows 11 compatibility | - | + |
Compatibility
Information on Atom E645CT and Celeron G5905 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 | Intel BGA1466 | FCLGA1200 |
| Power consumption (TDP) | 4 Watt | 58 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Atom E645CT and Celeron G5905. 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 | - | + |
| Enhanced SpeedStep (EIST) | + | + |
| Turbo Boost Technology | no data | - |
| Hyper-Threading Technology | + | - |
| Idle States | no data | + |
| Thermal Monitoring | - | + |
| Turbo Boost Max 3.0 | no data | - |
Security technologies
Atom E645CT and Celeron G5905 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | no data | - |
| EDB | no data | + |
| Secure Key | no data | + |
| Identity Protection | - | + |
| SGX | no data | Yes with Intel® ME |
| OS Guard | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Atom E645CT and Celeron G5905 are enumerated here.
| VT-d | no data | + |
| VT-x | no data | + |
| EPT | no data | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Atom E645CT and Celeron G5905. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR2 | DDR4-2666 |
| Maximum memory size | no data | 128 GB |
| Max memory channels | no data | 2 |
| Maximum memory bandwidth | no data | 41.6 GB/s |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card Compare | Intel GMA 600 | Intel UHD Graphics 610 |
| Max video memory | no data | 64 GB |
| Quick Sync Video | - | + |
| Clear Video | no data | + |
| Clear Video HD | no data | + |
| Graphics max frequency | no data | 1.05 GHz |
| InTru 3D | no data | + |
Graphics interfaces
Available interfaces and connections of Atom E645CT and Celeron G5905 integrated GPUs.
| Number of displays supported | no data | 3 |
Graphics image quality
Maximum display resolutions supported by Atom E645CT and Celeron G5905 integrated GPUs, including resolutions over different interfaces.
| 4K resolution support | no data | + |
| Max resolution over HDMI 1.4 | no data | 4096x2160@30Hz |
| Max resolution over eDP | no data | 4096x2304@60Hz |
| Max resolution over DisplayPort | no data | 4096x2304@60Hz |
Graphics API support
APIs supported by Atom E645CT and Celeron G5905 integrated GPUs, sometimes API versions are included.
| DirectX | no data | 12 |
| OpenGL | no data | 4.5 |
Peripherals
Specifications and connection of peripherals supported by Atom E645CT and Celeron G5905.
| PCIe version | no data | 3.0 |
| PCI Express lanes | no data | 16 |
Pros & cons summary
| Recency | 22 November 2010 | 1 July 2020 |
| Chip lithography | 45 nm | 14 nm |
| Power consumption (TDP) | 4 Watt | 58 Watt |
Atom E645CT has 1350% lower power consumption.
Celeron G5905, on the other hand, has an age advantage of 9 years, and a 221.4% more advanced lithography process.
We couldn't decide between Atom E645CT and Celeron G5905. We've got no test results to judge.
Be aware that Atom E645CT is a notebook processor while Celeron G5905 is a desktop one.
Should you still have questions on choice between Atom E645CT and Celeron G5905, 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.
