Intel Celeron 3855U | Intel Core Ultra 7 155H | |
CPU comparisonIntel Celeron 3855U or Intel Core Ultra 7 155H - which processor is faster? In this comparison we look at the differences and analyze which of these two CPUs is better. We compare the technical data and benchmark results.
The Intel Celeron 3855U has 2 cores with 2 threads and clocks with a maximum frequency of 1.60 GHz. Up to 32 GB of memory is supported in 2 memory channels. The Intel Celeron 3855U was released in Q4/2015. The Intel Core Ultra 7 155H has 16 cores with 22 threads and clocks with a maximum frequency of 4.80 GHz. The CPU supports up to 96 GB of memory in 2 memory channels. The Intel Core Ultra 7 155H was released in Q4/2023. |
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Intel Celeron (165) | Family | Intel Core Ultra 7 (10) |
Intel Celeron 3000 (10) | CPU group | Intel Core Ultra 100H (5) |
7 | Generation | 1 |
Kaby Lake U | Architecture | Meteor Lake H |
Mobile | Segment | Mobile |
-- | Predecessor | -- |
-- | Successor | -- |
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CPU Cores and Base FrequencyThe Intel Celeron 3855U has 2 CPU cores and can calculate 2 threads in parallel. The clock frequency of the Intel Celeron 3855U is 1.60 GHz while the Intel Core Ultra 7 155H has 16 CPU cores and 22 threads can calculate simultaneously. The clock frequency of the Intel Core Ultra 7 155H is at 1.40 GHz (4.80 GHz). |
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Intel Celeron 3855U | Characteristic | Intel Core Ultra 7 155H |
2 | Cores | 16 |
2 | Threads | 22 |
normal | Core architecture | hybrid (big.LITTLE) |
No | Hyperthreading | Yes |
No | Overclocking ? | No |
1.60 GHz | A-Core | 1.40 GHz (4.80 GHz) 6x Redwood Cove |
-- | B-Core | 0.90 GHz (3.80 GHz) 8x Crestmont |
-- | C-Core | 0.70 GHz (2.50 GHz) 2x Crestmont |
NPU AI performanceThe performance values of the processor's AI unit. The isolated NPU performance is specified here, the total AI performance (NPU+CPU+iGPU) can be higher. Processors with support for artificial intelligence (AI) and machine learning (ML) can process many calculations, especially audio, image and video processing, much faster than classic processors. |
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Intel Celeron 3855U | Characteristic | Intel Core Ultra 7 155H |
-- | AI hardware | Intel® AI Boost |
-- | AI specifications | Intel AI Boost @ 1.4 GHz (OpenVINO, WindowsML, DirectML, ONNX RT) |
-- | NPU + CPU + iGPU | -- |
Integrated graphics (iGPU)The Intel Celeron 3855U or Intel Core Ultra 7 155H has integrated graphics, called iGPU for short. The iGPU uses the system's main memory as graphics memory and sits on the processor's die. |
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Intel HD Graphics 510 | GPU | Intel Iris Xe 8 Core Graphics 128 EUs (Meteor Lake) |
0.30 GHz | GPU frequency | 0.60 GHz |
0.90 GHz | GPU (Turbo) | 2.25 GHz |
9 | GPU Generation | -- |
14 nm | Technology | 5 nm |
3 | Max. displays | 4 |
12 | Compute units | 128 |
96 | Shader | 1024 |
No | Hardware Raytracing | Yes |
No | Frame Generation | No |
32 GB | Max. GPU Memory | 32 GB |
12.0 | DirectX Version | 12.2 |
Hardware codec supportA photo or video codec that is accelerated in hardware can greatly accelerate the working speed of a processor and extend the battery life of notebooks or smartphones when playing videos. |
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Intel HD Graphics 510 | GPU | Intel Iris Xe 8 Core Graphics 128 EUs (Meteor Lake) |
Decode / Encode | Codec h265 / HEVC (8 bit) | Decode / Encode |
Decode | Codec h265 / HEVC (10 bit) | Decode / Encode |
Decode / Encode | Codec h264 | Decode / Encode |
Decode | Codec VP9 | Decode |
Decode / Encode | Codec VP8 | Decode |
No | Codec AV1 | Decode / Encode |
Decode / Encode | Codec AVC | Decode / Encode |
Decode | Codec VC-1 | Decode |
Decode | Codec JPEG | Decode / Encode |
Memory & PCIeThe Intel Celeron 3855U can use up to 32 GB of memory in 2 memory channels. The maximum memory bandwidth is 34.1 GB/s. The Intel Core Ultra 7 155H supports up to 96 GB of memory in 2 memory channels and achieves a memory bandwidth of up to 120.0 GB/s. |
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Intel Celeron 3855U | Characteristic | Intel Core Ultra 7 155H |
LPDDR3-1866, DDR4-2133, DDR3L-1600 | Memory | LPDDR5X-7500, DDR5-5600 |
32 GB | Max. Memory | 96 GB |
2 (Dual Channel) | Memory channels | 2 (Dual Channel) |
34.1 GB/s | Max. Bandwidth | 120.0 GB/s |
No | ECC | No |
-- | L2 Cache | 18.00 MB |
2.00 MB | L3 Cache | 24.00 MB |
2.0 | PCIe version | 5.0 |
10 | PCIe lanes | 20 |
5.0 GB/s | PCIe Bandwidth | 78.8 GB/s |
Thermal ManagementThe thermal design power (TDP for short) of the Intel Celeron 3855U is 15 W, while the Intel Core Ultra 7 155H has a TDP of 28 W. The TDP specifies the necessary cooling solution that is required to cool the processor sufficiently. |
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Intel Celeron 3855U | Characteristic | Intel Core Ultra 7 155H |
15 W | TDP (PL1 / PBP) | 28 W |
-- | TDP (PL2) | 115 W |
-- | TDP up | 65 W |
10 W | TDP down | 20 W |
100 °C | Tjunction max. | 110 °C |
Technical detailsThe Intel Celeron 3855U is manufactured in 14 nm and has 2.00 MB cache. The Intel Core Ultra 7 155H is manufactured in 7 nm and has a 42.00 MB cache. |
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Intel Celeron 3855U | Characteristic | Intel Core Ultra 7 155H |
14 nm | Technology | 7 nm |
Monolithic | Chip design | Chiplet |
x86-64 (64 bit) | Instruction set (ISA) | x86-64 (64 bit) |
SSE4.1, SSE4.2 | ISA extensions | SSE4.1, SSE4.2, AVX2 |
-- | Socket | BGA 2049 |
VT-x, VT-x EPT, VT-d | Virtualization | VT-x, VT-x EPT, VT-d |
Yes | AES-NI | Yes |
Windows 10, Linux | Operating systems | Windows 11, Linux |
Q4/2015 | Release date | Q4/2023 |
107 $ | Release price | -- |
show more data | show more data | |
Intel Celeron 3855U
2C 2T @ 1.60 GHz |
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Intel Core Ultra 7 155H
16C 22T @ 4.80 GHz |
Intel Celeron 3855U
2C 2T @ 1.60 GHz |
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Intel Core Ultra 7 155H
16C 22T @ 4.20 GHz |
Intel Celeron 3855U
2C 2T @ 1.60 GHz |
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Intel Core Ultra 7 155H
16C 22T @ 4.80 GHz |
Intel Celeron 3855U
2C 2T @ 1.60 GHz |
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Intel Core Ultra 7 155H
16C 22T @ 4.20 GHz |
Intel Celeron 3855U
Intel HD Graphics 510 @ 0.90 GHz |
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Intel Core Ultra 7 155H
Intel Iris Xe 8 Core Graphics 128 EUs (Meteor Lake) @ 2.25 GHz |
Intel Celeron 3855U
2C 2T @ 1.60 GHz |
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Intel Core Ultra 7 155H
16C 22T @ 4.20 GHz |
Intel Celeron 3855U
2C 2T @ 1.60 GHz |
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Intel Core Ultra 7 155H
16C 22T @ 4.80 GHz |
Intel Celeron 3855U
2C 2T @ 1.60 GHz |
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Intel Core Ultra 7 155H
16C 22T @ 4.20 GHz |
Intel Celeron 3855U
2C 2T @ 1.60 GHz |
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Intel Core Ultra 7 155H
16C 22T @ 4.80 GHz |
Intel Celeron 3855U
2C 2T @ 1.60 GHz |
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Intel Core Ultra 7 155H
16C 22T @ 4.20 GHz |
Intel Celeron 3855U
1.60 GHz |
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Intel Core Ultra 7 155H
16,825 CB R23 MC @ 75 W |
Devices using this processor |
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Intel Celeron 3855U | Intel Core Ultra 7 155H |
Unknown | ASUS Zenbook Duo (2024) UX8406 |