Celeron 2955U vs Phenom II X4 840T
Aggregate performance score
Phenom II X4 840T outperforms Celeron 2955U by a whopping 167% based on our aggregate benchmark results.
Primary details
Comparing Phenom II X4 840T and Celeron 2955U processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 2155 | 2825 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 2.28 | no data |
| Market segment | Desktop processor | Laptop |
| Series | no data | Intel Celeron |
| Power efficiency | 1.46 | 3.47 |
| Architecture codename | Zosma (2010−2011) | Haswell (2013−2015) |
| Release date | 1 September 2010 (14 years ago) | 1 September 2013 (11 years ago) |
| Launch price (MSRP) | $80 | no data |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Phenom II X4 840T and Celeron 2955U 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 | 2.9 GHz | 1.4 GHz |
| Boost clock speed | 3.2 GHz | 1.4 GHz |
| Bus rate | no data | 5 GT/s |
| L1 cache | 128 KB (per core) | 64K (per core) |
| L2 cache | 512 KB (per core) | 256K (per core) |
| L3 cache | 6 MB (shared) | 2 MB (shared) |
| Chip lithography | 45 nm | 22 nm |
| Die size | 346 mm2 | 118 mm2 |
| Maximum core temperature | no data | 100 °C |
| Maximum case temperature (TCase) | no data | 105 °C |
| Number of transistors | 904 million | 1,400 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
Compatibility
Information on Phenom II X4 840T and Celeron 2955U 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 | AM3 | FCBGA1168 |
| Power consumption (TDP) | 95 Watt | 15 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Phenom II X4 840T and Celeron 2955U. You'll probably need this information if you require some particular technology.
| Instruction set extensions | no data | Intel® SSE4.1, Intel® SSE4.2 |
| Enhanced SpeedStep (EIST) | no data | + |
| Turbo Boost Technology | no data | - |
| Hyper-Threading Technology | no data | - |
| Idle States | no data | + |
| Thermal Monitoring | - | + |
| Smart Response | no data | - |
| GPIO | no data | + |
| Smart Connect | no data | + |
| FDI | no data | - |
| AMT | no data | 9.5 |
| Matrix Storage | no data | - |
| HD Audio | no data | + |
| RST | no data | + |
Security technologies
Phenom II X4 840T and Celeron 2955U technologies aimed at improving security, for example, by protecting against hacks.
| TXT | no data | - |
| EDB | no data | + |
| Secure Key | no data | + |
| OS Guard | no data | - |
| Anti-Theft | no data | - |
Virtualization technologies
Virtual machine speed-up technologies supported by Phenom II X4 840T and Celeron 2955U are enumerated here.
| AMD-V | + | + |
| VT-d | no data | - |
| VT-x | no data | + |
| EPT | no data | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Phenom II X4 840T and Celeron 2955U. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | DDR3 |
| Maximum memory size | no data | 16 GB |
| Max memory channels | no data | 2 |
| Maximum memory bandwidth | no data | 25.6 GB/s |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | no data | Intel® HD Graphics for 4th Generation Intel® Processors |
| Clear Video | no data | + |
| Graphics max frequency | no data | 1 GHz |
Graphics interfaces
Available interfaces and connections of Phenom II X4 840T and Celeron 2955U integrated GPUs.
| Number of displays supported | no data | 3 |
| eDP | no data | + |
| DisplayPort | - | + |
| HDMI | - | + |
Peripherals
Specifications and connection of peripherals supported by Phenom II X4 840T and Celeron 2955U.
| PCIe version | 2.0 | 2.0 |
| PCI Express lanes | no data | 10 |
| PCI support | no data | - |
| USB revision | no data | 3.0 |
| Total number of SATA ports | no data | 2 |
| Max number of SATA 6 Gb/s Ports | no data | 2 |
| Integrated IDE | no data | - |
| Number of USB ports | no data | 4 |
| Integrated LAN | no data | - |
| UART | 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.
Combined synthetic benchmark score
This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.
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.
Pros & cons summary
| Performance score | 1.52 | 0.57 |
| Recency | 1 September 2010 | 1 September 2013 |
| Physical cores | 4 | 2 |
| Threads | 4 | 2 |
| Chip lithography | 45 nm | 22 nm |
| Power consumption (TDP) | 95 Watt | 15 Watt |
Phenom II X4 840T has a 166.7% higher aggregate performance score, and 100% more physical cores and 100% more threads.
Celeron 2955U, on the other hand, has an age advantage of 3 years, a 104.5% more advanced lithography process, and 533.3% lower power consumption.
The Phenom II X4 840T is our recommended choice as it beats the Celeron 2955U in performance tests.
Note that Phenom II X4 840T is a desktop processor while Celeron 2955U is a notebook one.
Should you still have questions on choice between Phenom II X4 840T and Celeron 2955U, ask them in Comments section, and we shall answer.
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