Intel Pentium 977 vs Intel Xeon W-2155

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CPU comparison with benchmarks


Intel Pentium 977 CPU1 vs CPU2 Intel Xeon W-2155
Intel Pentium 977 Intel Xeon W-2155

CPU comparison

Intel Pentium 977 or Intel Xeon W-2155 - 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 Pentium 977 has 2 cores with 2 threads and clocks with a maximum frequency of 1.40 GHz. Up to 16 GB of memory is supported in 2 memory channels. The Intel Pentium 977 was released in Q1/2012.

The Intel Xeon W-2155 has 10 cores with 20 threads and clocks with a maximum frequency of 4.50 GHz. The CPU supports up to 512 GB of memory in 4 memory channels. The Intel Xeon W-2155 was released in Q3/2017.
Intel Pentium (150) Family Intel Xeon W (83)
Intel Pentium 900 (10) CPU group Intel Xeon W-2100/3100 (15)
3 Generation 6
Sandy Bridge U Architecture Skylake W
Mobile Segment Desktop / Server
-- Predecessor --
-- Successor Intel Xeon W-2255

CPU Cores and Base Frequency

The Intel Pentium 977 is a 2 core processor with a clock frequency of 1.40 GHz. The Intel Xeon W-2155 has 10 CPU cores with a clock frequency of 3.30 GHz (4.50 GHz).

Intel Pentium 977 Characteristic Intel Xeon W-2155
2 Cores 10
2 Threads 20
normal Core architecture normal
No Hyperthreading Yes
No Overclocking ? No
1.40 GHz Frequency 3.30 GHz
-- Turbo Frequency (1 Core) 4.50 GHz
-- Turbo Frequency (All Cores) 4.00 GHz

Artificial Intelligence and Machine Learning

Processors with the support of artificial intelligence (AI) and machine learning (ML) can process many calculations, especially audio, image and video processing, much faster than classic processors. Algorithms for ML improve their performance the more data they have collected via software. ML tasks can be processed up to 10,000 times faster than with a classic processor.

Intel Pentium 977 Characteristic Intel Xeon W-2155
-- AI hardware --
-- AI specifications --

Internal Graphics

The integrated graphics unit of a processor is not only responsible for the pure image output on the system, but can also significantly increase the efficiency of the system with the support of modern video codecs.

Intel HD Graphics (Sandy Bridge GT1) GPU no iGPU
0.35 GHz GPU frequency --
1.00 GHz GPU (Turbo) --
6 GPU Generation --
32 nm Technology
2 Max. displays
6 Compute units --
48 Shader --
No Hardware Raytracing No
No Frame Generation No
2 GB Max. GPU Memory --
10.1 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 HD Graphics (Sandy Bridge GT1) GPU no iGPU
No Codec h265 / HEVC (8 bit) No
No Codec h265 / HEVC (10 bit) No
Decode / Encode Codec h264 No
No Codec VP9 No
No Codec VP8 No
No Codec AV1 No
Decode / Encode Codec AVC No
Decode Codec VC-1 No
No Codec JPEG No

Memory & PCIe

The Intel Pentium 977 supports a maximum of 16 GB of memory in 2 memory channels. The Intel Xeon W-2155 can connect up to 512 GB of memory in 4 memory channels.

Intel Pentium 977 Characteristic Intel Xeon W-2155
DDR3-1066, DDR3-1333 Memory DDR4-2666
16 GB Max. Memory 512 GB
2 (Dual Channel) Memory channels 4 (Quad Channel)
21.3 GB/s Max. Bandwidth 85.4 GB/s
No ECC Yes
-- L2 Cache --
2.00 MB L3 Cache 13.75 MB
2.0 PCIe version 3.0
16 PCIe lanes 48
8.0 GB/s PCIe Bandwidth 47.3 GB/s

Thermal Management

The TDP (Thermal Design Power) of a processor specifies the required cooling solution. The Intel Pentium 977 has a TDP of 17 W, that of the Intel Xeon W-2155 is 140 W.

Intel Pentium 977 Characteristic Intel Xeon W-2155
17 W TDP (PL1 / PBP) 140 W
-- TDP (PL2) --
-- TDP up --
-- TDP down --
100 °C Tjunction max. --

Technical details

The Intel Pentium 977 has a 2.00 MB cache, while the Intel Xeon W-2155 cache has a total of 13.75 MB.

Intel Pentium 977 Characteristic Intel Xeon W-2155
32 nm Technology 14 nm
Monolithic Chip design Monolithic
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
SSE4.1, SSE4.2 ISA extensions SSE4.1, SSE4.2, AVX2, AVX-512
BGA 1023 Socket LGA 2066
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 10, Linux
Q1/2012 Release date Q3/2017
-- Release price 1440 $
show more data show more data


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Average performance in benchmarks

⌀ Single core performance in 1 CPU benchmarks
Intel Pentium 977 (23%)
Intel Xeon W-2155 (100%)
⌀ Multi core performance in 2 CPU benchmarks
Intel Pentium 977 (4%)
Intel Xeon W-2155 (100%)

Geekbench 5, 64bit (Single-Core)

Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
Intel Pentium 977 Intel Pentium 977
2C 2T @ 1.40 GHz
278 (23%)
Intel Xeon W-2155 Intel Xeon W-2155
10C 20T @ 4.50 GHz
1230 (100%)

Geekbench 5, 64bit (Multi-Core)

Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
Intel Pentium 977 Intel Pentium 977
2C 2T @ 1.40 GHz
535 (5%)
Intel Xeon W-2155 Intel Xeon W-2155
10C 20T @ 4.00 GHz
11208 (100%)

Estimated results for PassMark CPU Mark

Some of the CPUs listed below have been benchmarked by CPU-monkey. However the majority of CPUs have not been tested and the results have been estimated by a CPU-monkey’s secret proprietary formula. As such they do not accurately reflect the actual Passmark CPU mark values and are not endorsed by PassMark Software Pty Ltd.
Intel Pentium 977 Intel Pentium 977
2C 2T @ 1.40 GHz
666 (3%)
Intel Xeon W-2155 Intel Xeon W-2155
10C 20T @ 4.00 GHz
20917 (100%)

Geekbench 6 (Single-Core)

Geekbench 6 is a benchmark for modern computers, notebooks and smartphones. What is new is an optimized utilization of newer CPU architectures, e.g. based on the big.LITTLE concept and combining CPU cores of different sizes. The single-core benchmark only evaluates the performance of the fastest CPU core, the number of CPU cores in a processor is irrelevant here.
Intel Pentium 977 Intel Pentium 977
2C 2T @ 1.40 GHz
0 (0%)
Intel Xeon W-2155 Intel Xeon W-2155
10C 20T @ 4.50 GHz
1452 (100%)

Geekbench 6 (Multi-Core)

Geekbench 6 is a benchmark for modern computers, notebooks and smartphones. What is new is an optimized utilization of newer CPU architectures, e.g. based on the big.LITTLE concept and combining CPU cores of different sizes. The multi-core benchmark evaluates the performance of all of the processor's CPU cores. Virtual thread improvements such as AMD SMT or Intel's Hyper-Threading have a positive impact on the benchmark result.
Intel Pentium 977 Intel Pentium 977
2C 2T @ 1.40 GHz
0 (0%)
Intel Xeon W-2155 Intel Xeon W-2155
10C 20T @ 4.00 GHz
9108 (100%)

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 Pentium 977 Intel Pentium 977
Intel HD Graphics (Sandy Bridge GT1) @ 1.00 GHz
96 (100%)
Intel Xeon W-2155 Intel Xeon W-2155
@ 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 Pentium 977 Intel Pentium 977
2C 2T @ 1.40 GHz
0 (0%)
Intel Xeon W-2155 Intel Xeon W-2155
10C 20T @ 4.50 GHz
193 (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 Pentium 977 Intel Pentium 977
2C 2T @ 1.40 GHz
0 (0%)
Intel Xeon W-2155 Intel Xeon W-2155
10C 20T @ 4.00 GHz
2021 (100%)

Devices using this processor

Intel Pentium 977 Intel Xeon W-2155
Unknown Unknown

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