Celeron J3455 vs Athlon II X4 638
Aggregated performance score
Celeron J3455 outperforms Athlon II X4 638 by 1% based on our aggregated benchmark results.
Primary Details
Comparing Athlon II X4 638 and Celeron J3455 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in performance ranking | 2060 | 2059 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-Effectiveness Evaluation | 2.05 | no data |
| Market segment | Desktop processor | Laptop |
| Series | no data | Intel Celeron |
| Architecture codename | Llano (2011−2012) | Apollo Lake (2016) |
| Release date | 6 February 2012 (12 years ago) | 30 August 2016 (7 years ago) |
| Launch price (MSRP) | no data | $107 |
| Current price | $27 | $189 (1.8x MSRP) |
Cost-Effectiveness Evaluation
Performance per price, higher is better.
Detailed Specifications
Athlon II X4 638 and Celeron J3455 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) | 4 (Quad-Core) |
| Threads | 4 | 4 |
| Base clock speed | 2.7 GHz | 1.5 GHz |
| Boost clock speed | 2.7 GHz | 2.3 GHz |
| L1 cache | 128 KB (per core) | no data |
| L2 cache | 1 MB (per core) | 2 MB |
| L3 cache | 0 KB | 0 KB |
| Chip lithography | 32 nm | 14 nm |
| Die size | 228 mm2 | no data |
| Maximum core temperature | no data | 105 °C |
| Number of transistors | 1,178 million | no data |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
| Unlocked multiplier | No | No |
Compatibility
Information on Athlon II X4 638 and Celeron J3455 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 | FM1 | FCBGA1296 |
| Power consumption (TDP) | 65 Watt | 10 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Athlon II X4 638 and Celeron J3455. You'll probably need this information if you require some particular technology.
| AES-NI | no data | + |
| Enhanced SpeedStep (EIST) | no data | + |
| Turbo Boost Technology | no data | - |
| Hyper-Threading Technology | no data | - |
| Idle States | no data | + |
| Thermal Monitoring | no data | + |
| SIPP | no data | - |
| Smart Response | no data | - |
| GPIO | no data | + |
| Smart Connect | no data | - |
| Status | no data | Launched |
| HD Audio | no data | + |
| RST | no data | - |
Security technologies
Athlon II X4 638 and Celeron J3455 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | no data | + |
| EDB | no data | + |
| Secure Boot | no data | + |
| Secure Key | no data | + |
| Identity Protection | no data | + |
| OS Guard | no data | - |
| Anti-Theft | no data | - |
Virtualization technologies
Virtual machine speed-up technologies supported by Athlon II X4 638 and Celeron J3455 are enumerated here.
| AMD-V | + | no data |
| VT-d | no data | + |
| VT-x | no data | + |
| VT-i | no data | - |
| EPT | no data | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Athlon II X4 638 and Celeron J3455. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | DDR3L/LPDDR3 up to 1866 MT/s; LPDDR4 up to 2400 MT/s |
| Maximum memory size | no data | 8 GB |
| Max memory channels | no data | 2 |
| ECC memory support | no data | - |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | no data | Intel HD Graphics 500 |
| Max video memory | no data | 8 GB |
| Quick Sync Video | no data | + |
| Clear Video | no data | + |
| Clear Video HD | no data | + |
| Graphics max frequency | no data | 750 MHz |
| Execution Units | no data | 12 |
Graphics interfaces
Available interfaces and connections of Athlon II X4 638 and Celeron J3455 integrated GPUs.
| Number of displays supported | no data | 3 |
| eDP | no data | + |
| DisplayPort | no data | + |
| HDMI | no data | + |
| MIPI-DSI | no data | + |
Graphics API support
APIs supported by Athlon II X4 638 and Celeron J3455 integrated GPUs, sometimes API versions are included.
| DirectX | no data | + |
| OpenGL | no data | + |
Peripherals
Specifications and connection of peripherals supported by Athlon II X4 638 and Celeron J3455.
| PCIe version | no data | 2.0 |
| PCI Express lanes | no data | 6 |
| USB revision | no data | 2.0/3.0 |
| Total number of SATA ports | no data | 2 |
| Max number of SATA 6 Gb/s Ports | no data | 2 |
| Number of USB ports | no data | 8 |
| 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.
Celeron J3455 outperforms Athlon II X4 638 by 1% based on our aggregated benchmark results.
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%
Pros & Cons Summary
| Performance score | 1.45 | 1.46 |
| Recency | 6 February 2012 | 30 August 2016 |
| Chip lithography | 32 nm | 14 nm |
| Power consumption (TDP) | 65 Watt | 10 Watt |
Given the minimal performance differences, no clear winner can be declared between Athlon II X4 638 and Celeron J3455.
Note that Athlon II X4 638 is a desktop processor while Celeron J3455 is a notebook one.
Should you still have questions on choice between Athlon II X4 638 and Celeron J3455, ask them in Comments section, and we shall answer.
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