Intel Xeon E5-1660 v4 vs Intel Pentium Gold 6405U

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CPU comparison with benchmarks


Intel Xeon E5-1660 v4 CPU1 vs CPU2 Intel Pentium Gold 6405U
Intel Xeon E5-1660 v4 Intel Pentium Gold 6405U

CPU comparison

Intel Xeon E5-1660 v4 or Intel Pentium Gold 6405U - 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 Xeon E5-1660 v4 has 8 cores with 16 threads and clocks with a maximum frequency of 3.80 GHz. Up to 1536 GB of memory is supported in 4 memory channels. The Intel Xeon E5-1660 v4 was released in Q2/2016.

The Intel Pentium Gold 6405U has 2 cores with 4 threads and clocks with a maximum frequency of 2.40 GHz. The CPU supports up to 64 GB of memory in 2 memory channels. The Intel Pentium Gold 6405U was released in Q4/2019.
Intel Xeon E5 (71) Family Intel Pentium (150)
Intel Xeon E5 v4 (24) CPU group Intel Pentium 6000 (1)
6 Generation 10
Broadwell E Architecture Comet Lake U
Desktop / Server Segment Mobile
Intel Xeon E5-1660 v3 Predecessor --
-- Successor --

CPU Cores and Base Frequency

The Intel Xeon E5-1660 v4 has 8 CPU cores and can calculate 16 threads in parallel. The clock frequency of the Intel Xeon E5-1660 v4 is 3.20 GHz (3.80 GHz) while the Intel Pentium Gold 6405U has 2 CPU cores and 4 threads can calculate simultaneously. The clock frequency of the Intel Pentium Gold 6405U is at 2.40 GHz.

Intel Xeon E5-1660 v4 Characteristic Intel Pentium Gold 6405U
8 Cores 2
16 Threads 4
normal Core architecture normal
Yes Hyperthreading Yes
No Overclocking ? No
3.20 GHz Frequency 2.40 GHz
3.80 GHz Turbo Frequency (1 Core) --
-- Turbo Frequency (All Cores) --

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 Xeon E5-1660 v4 Characteristic Intel Pentium Gold 6405U
-- AI hardware --
-- AI specifications --

Internal Graphics

The Intel Xeon E5-1660 v4 or Intel Pentium Gold 6405U 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.

no iGPU GPU Intel UHD Graphics 610
GPU frequency 0.30 GHz
-- GPU (Turbo) 0.95 GHz
-- GPU Generation 9.5
Technology 14 nm
Max. displays 3
-- Compute units 12
-- Shader 96
No Hardware Raytracing No
No Frame Generation No
-- Max. GPU Memory 32 GB
-- DirectX Version 12

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.

no iGPU GPU Intel UHD Graphics 610
No Codec h265 / HEVC (8 bit) Decode / Encode
No Codec h265 / HEVC (10 bit) Decode / Encode
No Codec h264 Decode / Encode
No Codec VP9 Decode / Encode
No Codec VP8 Decode / Encode
No Codec AV1 No
No Codec AVC Decode / Encode
No Codec VC-1 Decode
No Codec JPEG Decode / Encode

Memory & PCIe

The Intel Xeon E5-1660 v4 can use up to 1536 GB of memory in 4 memory channels. The maximum memory bandwidth is 76.8 GB/s. The Intel Pentium Gold 6405U supports up to 64 GB of memory in 2 memory channels and achieves a memory bandwidth of up to 38.4 GB/s.

Intel Xeon E5-1660 v4 Characteristic Intel Pentium Gold 6405U
DDR4-1866, DDR4-2133, DDR4-2400 Memory LPDDR3-2133, DDR4-2400
1536 GB Max. Memory 64 GB
4 (Quad Channel) Memory channels 2 (Dual Channel)
76.8 GB/s Max. Bandwidth 38.4 GB/s
Yes ECC No
-- L2 Cache --
20.00 MB L3 Cache 2.00 MB
3.0 PCIe version 2.0
40 PCIe lanes 12
39.4 GB/s PCIe Bandwidth 6.0 GB/s

Thermal Management

The thermal design power (TDP for short) of the Intel Xeon E5-1660 v4 is 140 W, while the Intel Pentium Gold 6405U has a TDP of 15 W. The TDP specifies the necessary cooling solution that is required to cool the processor sufficiently.

Intel Xeon E5-1660 v4 Characteristic Intel Pentium Gold 6405U
140 W TDP (PL1 / PBP) 15 W
-- TDP (PL2) --
-- TDP up --
-- TDP down 12.5 W
-- Tjunction max. 100 °C

Technical details

The Intel Xeon E5-1660 v4 is manufactured in 14 nm and has 20.00 MB cache. The Intel Pentium Gold 6405U is manufactured in 14 nm and has a 2.00 MB cache.

Intel Xeon E5-1660 v4 Characteristic Intel Pentium Gold 6405U
14 nm Technology 14 nm
Monolithic 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
LGA 2011-3 Socket BGA 1528
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, Windows 11, Linux
Q2/2016 Release date Q4/2019
1113 $ Release price 193 $
show more data show more data


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Average performance in benchmarks

⌀ Single core performance in 1 CPU benchmarks
⌀ Multi core performance in 2 CPU benchmarks

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 Xeon E5-1660 v4 Intel Xeon E5-1660 v4
8C 16T @ 3.80 GHz
946 (100%)
Intel Pentium Gold 6405U Intel Pentium Gold 6405U
2C 4T @ 2.40 GHz
592 (63%)

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 Xeon E5-1660 v4 Intel Xeon E5-1660 v4
8C 16T @ 3.20 GHz
7536 (100%)
Intel Pentium Gold 6405U Intel Pentium Gold 6405U
2C 4T @ 2.40 GHz
1340 (18%)

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 Xeon E5-1660 v4 Intel Xeon E5-1660 v4
8C 16T @ 3.20 GHz
13489 (100%)
Intel Pentium Gold 6405U Intel Pentium Gold 6405U
2C 4T @ 2.40 GHz
2329 (17%)

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 Xeon E5-1660 v4 Intel Xeon E5-1660 v4
8C 16T @ 3.80 GHz
1158 (100%)
Intel Pentium Gold 6405U Intel Pentium Gold 6405U
2C 4T @ 2.40 GHz
0 (0%)

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 Xeon E5-1660 v4 Intel Xeon E5-1660 v4
8C 16T @ 3.20 GHz
6859 (100%)
Intel Pentium Gold 6405U Intel Pentium Gold 6405U
2C 4T @ 2.40 GHz
0 (0%)

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 Xeon E5-1660 v4 Intel Xeon E5-1660 v4
@ 0.00 GHz
0 (0%)
Intel Pentium Gold 6405U Intel Pentium Gold 6405U
Intel UHD Graphics 610 @ 0.95 GHz
182 (100%)

Blender 2.81 (bmw27)

Blender is a free 3D graphics software for rendering (creating) 3D bodies, which can also be textured and animated in the software. The Blender benchmark creates predefined scenes and measures the time (s) required for the entire scene. The shorter the time required, the better. We selected bmw27 as the benchmark scene.
Intel Xeon E5-1660 v4 Intel Xeon E5-1660 v4
8C 16T @ 3.20 GHz
234.1 (100%)
Intel Pentium Gold 6405U Intel Pentium Gold 6405U
2C 4T @ 2.40 GHz
0 (0%)

Devices using this processor

Intel Xeon E5-1660 v4 Intel Pentium Gold 6405U
Unknown Lenovo Ideapad 3 17IML05

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