Celeron J3455 vs Ultra 7 356H
Aggregate performance score
Core Ultra 7 356H outperforms Celeron J3455 by a whopping 1456% based on our aggregate benchmark results.
Contents
Primary details
Comparing processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 353 | 2525 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | no data | 0.22 |
| Market segment | Laptop | Desktop processor |
| Series | no data | Intel Celeron |
| Power efficiency | 33.65 | 5.41 |
| Designer | Intel | Intel |
| Manufacturer | Intel | no data |
| Architecture codename | Panther Lake (2026) | Apollo Lake (2014−2016) |
| Release date | 5 January 2026 (recently) | 30 August 2016 (9 years ago) |
| Launch price (MSRP) | no data | $107 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Performance to price scatter graph
Detailed specifications
Core Ultra 7 356H 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 | 16 (Hexadeca-Core) | 4 (Quad-Core) |
| Performance-cores | 4 | no data |
| Efficient-cores | 8 | no data |
| Low Power Efficient-cores | 4 | no data |
| Threads | 16 | 4 |
| Base clock speed | 1.9 GHz | 1.5 GHz |
| Boost clock speed | 4.7 GHz | 2.3 GHz |
| Multiplier | no data | 15 |
| L1 cache | 192 KB (per core) | no data |
| L2 cache | 2.5 MB (per core) | 2 MB |
| L3 cache | 18 MB (shared) | 0 KB |
| Chip lithography | 3 nm | 14 nm |
| Maximum core temperature | no data | 105 °C |
| 64 bit support | + | + |
| Windows 11 compatibility | no data | - |
Compatibility
Information on Core Ultra 7 356H 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 (Uniprocessor) |
| Socket | FCBGA2540 | FCBGA1296 |
| Power consumption (TDP) | 25 Watt | 10 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core Ultra 7 356H and Celeron J3455. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2 | no data |
| AES-NI | + | + |
| AVX | + | - |
| Enhanced SpeedStep (EIST) | + | + |
| Speed Shift | + | no data |
| Turbo Boost Technology | 2.0 | - |
| Hyper-Threading Technology | no data | - |
| Idle States | no data | + |
| Thermal Monitoring | + | + |
| Smart Response | no data | - |
| GPIO | no data | + |
| Smart Connect | no data | - |
| Turbo Boost Max 3.0 | + | no data |
| HD Audio | no data | + |
| RST | no data | - |
| Deep Learning Boost | + | - |
| Supported AI Software Frameworks | OpenVINO™, WindowsML, DirectML, ONNX RT, WebNN | - |
Security technologies
Core Ultra 7 356H and Celeron J3455 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | + |
| EDB | + | + |
| Secure Boot | no data | + |
| Identity Protection | - | + |
| OS Guard | + | - |
| Anti-Theft | no data | - |
Virtualization technologies
Virtual machine speed-up technologies supported by Core Ultra 7 356H and Celeron J3455 are enumerated here.
| VT-d | + | + |
| VT-x | + | + |
| VT-i | no data | - |
| EPT | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Core Ultra 7 356H and Celeron J3455. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | LPDDR5X-8533, DDR5-7200 | DDR3L/LPDDR3 up to 1866 MT/s; LPDDR4 up to 2400 MT/s |
| Maximum memory size | 128 GB | 8 GB |
| Max memory channels | 2 | 2 |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | Intel® Graphics | Intel HD Graphics 500 |
| Max video memory | no data | 8 GB |
| Quick Sync Video | + | + |
| Clear Video | no data | + |
| Clear Video HD | no data | + |
| Graphics max frequency | 2.45 GHz | 750 MHz |
| Execution Units | no data | 12 |
Graphics interfaces
Available interfaces and connections of Core Ultra 7 356H and Celeron J3455 integrated GPUs.
| Number of displays supported | 4 | 3 |
| eDP | no data | + |
| DisplayPort | - | + |
| HDMI | - | + |
| MIPI-DSI | no data | + |
Graphics image quality
Maximum display resolutions supported by Core Ultra 7 356H and Celeron J3455 integrated GPUs, including resolutions over different interfaces.
| Max resolution over eDP | 3840 x 2400 @ 120Hz | no data |
| Max resolution over DisplayPort | 7680 x 4320 @ 60Hz | no data |
Graphics API support
APIs supported by Core Ultra 7 356H and Celeron J3455 integrated GPUs, sometimes API versions are included.
| DirectX | DirectX 12 Ultimate | + |
| OpenGL | 4.6 | + |
Peripherals
Specifications and connection of peripherals supported by Core Ultra 7 356H and Celeron J3455.
| PCIe version | 5.0 and 4.0 | 2.0 |
| PCI Express lanes | 20 | 6 |
| USB revision | no data | 2.0/3.0 |
| Total number of SATA ports | no data | 2 |
| Number of USB ports | no data | 8 |
| Integrated LAN | no data | - |
| UART | no data | + |
Synthetic benchmarks
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.
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. Other than that, Passmark measures multi-core performance.
Pros & cons summary
| Performance score | 19.92 | 1.28 |
| Recency | 5 January 2026 | 30 August 2016 |
| Physical cores | 16 | 4 |
| Threads | 16 | 4 |
| Chip lithography | 3 nm | 14 nm |
| Power consumption (TDP) | 25 Watt | 10 Watt |
Ultra 7 356H has a 1456.3% higher aggregate performance score, an age advantage of 9 years, 300% more physical cores and 300% more threads, and a 366.7% more advanced lithography process.
Celeron J3455, on the other hand, has 150% lower power consumption.
The Intel Core Ultra 7 356H is our recommended choice as it beats the Intel Celeron J3455 in performance tests.
Be aware that Core Ultra 7 356H is a notebook processor while Celeron J3455 is a desktop one.
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