Intel Core Ultra 5 125U vs Intel Xeon Platinum 8156

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CPU comparison with benchmarks


Intel Core Ultra 5 125U CPU1 vs CPU2 Intel Xeon Platinum 8156
Intel Core Ultra 5 125U Intel Xeon Platinum 8156

CPU comparison

Intel Core Ultra 5 125U or Intel Xeon Platinum 8156 - 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 Core Ultra 5 125U has 12 cores with 14 threads and clocks with a maximum frequency of 4.30 GHz. Up to 96 GB of memory is supported in 2 memory channels. The Intel Core Ultra 5 125U was released in Q4/2023.

The Intel Xeon Platinum 8156 has 4 cores with 8 threads and clocks with a maximum frequency of 3.70 GHz. The CPU supports up to 768 GB of memory in 6 memory channels. The Intel Xeon Platinum 8156 was released in Q3/2017.
Intel Core Ultra 5 (10) Family Intel Xeon Platinum (89)
Intel Core Ultra 100U (7) CPU group Intel Xeon Platinum 8100 (16)
1 Generation 1
Meteor Lake U Architecture Skylake
Mobile Segment Desktop / Server
-- Predecessor --
-- Successor --

CPU Cores and Base Frequency

The Intel Core Ultra 5 125U has 12 CPU cores and can calculate 14 threads in parallel. The clock frequency of the Intel Core Ultra 5 125U is 1.30 GHz (4.30 GHz) while the Intel Xeon Platinum 8156 has 4 CPU cores and 8 threads can calculate simultaneously. The clock frequency of the Intel Xeon Platinum 8156 is at 3.60 GHz (3.70 GHz).

Intel Core Ultra 5 125U Characteristic Intel Xeon Platinum 8156
12 Cores 4
14 Threads 8
hybrid (big.LITTLE) Core architecture normal
Yes Hyperthreading Yes
No Overclocking ? No
1.30 GHz (4.30 GHz)
2x Redwood Cove
A-Core 3.60 GHz (3.70 GHz)
0.80 GHz (3.60 GHz)
8x Crestmont
B-Core --
0.70 GHz (2.10 GHz)
2x Crestmont
C-Core --

NPU AI performance

The 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.

Intel Core Ultra 5 125U Characteristic Intel Xeon Platinum 8156
Intel® AI Boost AI hardware --
Intel AI Boost @ 1.4 GHz (OpenVINO, WindowsML, DirectML, ONNX RT) AI specifications --
-- NPU + CPU + iGPU --

Integrated graphics (iGPU)

The Intel Core Ultra 5 125U or Intel Xeon Platinum 8156 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.

Intel Iris Xe 4 Core Graphics 64 EUs (Meteor Lake) GPU no iGPU
0.60 GHz GPU frequency --
1.85 GHz GPU (Turbo) --
-- GPU Generation --
5 nm Technology
4 Max. displays
64 Compute units --
512 Shader --
Yes Hardware Raytracing No
No Frame Generation No
32 GB Max. GPU Memory --
12.2 DirectX Version --

Hardware codec support

A 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.

Intel Iris Xe 4 Core Graphics 64 EUs (Meteor Lake) GPU no iGPU
Decode / Encode Codec h265 / HEVC (8 bit) No
Decode / Encode Codec h265 / HEVC (10 bit) No
Decode / Encode Codec h264 No
Decode Codec VP9 No
Decode Codec VP8 No
Decode / Encode Codec AV1 No
Decode / Encode Codec AVC No
Decode Codec VC-1 No
Decode / Encode Codec JPEG No

Memory & PCIe

The Intel Core Ultra 5 125U can use up to 96 GB of memory in 2 memory channels. The maximum memory bandwidth is 120.0 GB/s. The Intel Xeon Platinum 8156 supports up to 768 GB of memory in 6 memory channels and achieves a memory bandwidth of up to 128.1 GB/s.

Intel Core Ultra 5 125U Characteristic Intel Xeon Platinum 8156
LPDDR5X-7500, DDR5-5600 Memory DDR4-2666
96 GB Max. Memory 768 GB
2 (Dual Channel) Memory channels 6 (Hexa Channel)
120.0 GB/s Max. Bandwidth 128.1 GB/s
No ECC Yes
12.00 MB L2 Cache --
-- L3 Cache 17.00 MB
4.0 PCIe version 3.0
20 PCIe lanes 48
39.4 GB/s PCIe Bandwidth 47.3 GB/s

Thermal Management

The thermal design power (TDP for short) of the Intel Core Ultra 5 125U is 15 W, while the Intel Xeon Platinum 8156 has a TDP of 105 W. The TDP specifies the necessary cooling solution that is required to cool the processor sufficiently.

Intel Core Ultra 5 125U Characteristic Intel Xeon Platinum 8156
15 W TDP (PL1 / PBP) 105 W
57 W TDP (PL2) --
28 W TDP up --
12 W TDP down --
110 °C Tjunction max. --

Technical details

The Intel Core Ultra 5 125U is manufactured in 7 nm and has 12.00 MB cache. The Intel Xeon Platinum 8156 is manufactured in 14 nm and has a 17.00 MB cache.

Intel Core Ultra 5 125U Characteristic Intel Xeon Platinum 8156
7 nm Technology 14 nm
Chiplet Chip design Monolithic
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
SSE4.1, SSE4.2, AVX2 ISA extensions SSE4.1, SSE4.2, AVX2, AVX-512
BGA 2049 Socket LGA 3647
VT-x, VT-x EPT, VT-d Virtualization VT-x, VT-x EPT, VT-d
Yes AES-NI Yes
Windows 11, Linux Operating systems Windows 10, Linux
Q4/2023 Release date Q3/2017
-- Release price 7000 $
show more data show more data


Rate these processors

Here you can rate the Intel Core Ultra 5 125U to help other visitors make their purchasing decisions. The average rating is 4.2 stars (5 ratings). Rate now:
Here you can rate the Intel Xeon Platinum 8156 to help other visitors make their purchasing decisions. The average rating is 0 stars (0 ratings). Rate now:


iGPU - FP32 Performance (Single-precision GFLOPS)

The theoretical computing performance of the internal graphics unit of the processor with simple accuracy (32 bit) in GFLOPS. GFLOPS indicates how many billion floating point operations the iGPU can perform per second.
Intel Core Ultra 5 125U Intel Core Ultra 5 125U
Intel Iris Xe 4 Core Graphics 64 EUs (Meteor Lake) @ 1.85 GHz
1835 (100%)
Intel Xeon Platinum 8156 Intel Xeon Platinum 8156
@ 0.00 GHz
0 (0%)

Cinebench R15 (Single-Core)

Cinebench R15 is the successor of Cinebench 11.5 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
Intel Core Ultra 5 125U Intel Core Ultra 5 125U
12C 14T @ 4.30 GHz
0 (0%)
Intel Xeon Platinum 8156 Intel Xeon Platinum 8156
4C 8T @ 3.70 GHz
162 (100%)

Cinebench R15 (Multi-Core)

Cinebench R15 is the successor of Cinebench 11.5 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
Intel Core Ultra 5 125U Intel Core Ultra 5 125U
12C 14T @ 1.30 GHz
0 (0%)
Intel Xeon Platinum 8156 Intel Xeon Platinum 8156
4C 8T @ 3.70 GHz
827 (100%)

Devices using this processor

Intel Core Ultra 5 125U Intel Xeon Platinum 8156
Unknown Unknown

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