AMD Athlon II X4 640 vs Intel Pentium 3805U

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CPU comparison with benchmarks


AMD Athlon II X4 640 CPU1 vs CPU2 Intel Pentium 3805U
AMD Athlon II X4 640 Intel Pentium 3805U

CPU comparison

In this CPU comparison, we compare the AMD Athlon II X4 640 and the Intel Pentium 3805U and use benchmarks to check which processor is faster.

We compare the AMD Athlon II X4 640 4 core processor released in Q2/2010 with the Intel Pentium 3805U which has 2 CPU cores and was introduced in Q1/2015.
AMD Athlon II (52) Family Intel Pentium (150)
AMD Athlon II X4 (Propus) (10) CPU group Intel Pentium 3000 (8)
1 Generation 4
Propus Architecture Haswell U
Desktop / Server Segment Mobile
-- Predecessor --
AMD Athlon II X4 740 Successor --

CPU Cores and Base Frequency

The AMD Athlon II X4 640 is a 4 core processor with a clock frequency of 3.00 GHz. The processor can compute 4 threads at the same time. The Intel Pentium 3805U clocks with 1.90 GHz, has 2 CPU cores and can calculate 2 threads in parallel.

AMD Athlon II X4 640 Characteristic Intel Pentium 3805U
4 Cores 2
4 Threads 2
normal Core architecture normal
No Hyperthreading No
No Overclocking ? No
3.00 GHz Frequency 1.90 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.

AMD Athlon II X4 640 Characteristic Intel Pentium 3805U
-- AI hardware --
-- AI specifications --

Internal Graphics

Graphics (iGPU) integrated into the processor not only enable image output without having to rely on a dedicated graphics solution, but can also efficiently accelerate video playback.

no iGPU GPU Intel HD Graphics (Broadwell GT1)
GPU frequency 0.10 GHz
-- GPU (Turbo) 0.80 GHz
-- GPU Generation 8
Technology 14 nm
Max. displays 3
-- Compute units 12
-- Shader 96
No Hardware Raytracing No
No Frame Generation No
-- Max. GPU Memory 2 GB
-- DirectX Version 11.2

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 HD Graphics (Broadwell GT1)
No Codec h265 / HEVC (8 bit) No
No Codec h265 / HEVC (10 bit) No
No Codec h264 Decode / Encode
No Codec VP9 No
No Codec VP8 Decode
No Codec AV1 No
No Codec AVC Decode / Encode
No Codec VC-1 Decode
No Codec JPEG Decode

Memory & PCIe

Up to 16 GB of memory in a maximum of 2 memory channels is supported by the AMD Athlon II X4 640, while the Intel Pentium 3805U supports a maximum of 16 GB of memory with a maximum memory bandwidth of 25.6 GB/s enabled.

AMD Athlon II X4 640 Characteristic Intel Pentium 3805U
DDR3-1333 Memory DDR3-1600
16 GB Max. Memory 16 GB
2 (Dual Channel) Memory channels 2 (Dual Channel)
21.3 GB/s Max. Bandwidth 25.6 GB/s
No ECC No
2.00 MB L2 Cache --
-- L3 Cache 2.00 MB
2.0 PCIe version 2.0
-- PCIe lanes 12
-- PCIe Bandwidth 6.0 GB/s

Thermal Management

The AMD Athlon II X4 640 has a TDP of 95 W. The TDP of the Intel Pentium 3805U is 15 W. System integrators use the TDP of the processor as a guide when dimensioning the cooling solution.

AMD Athlon II X4 640 Characteristic Intel Pentium 3805U
95 W TDP (PL1 / PBP) 15 W
-- TDP (PL2) --
-- TDP up --
-- TDP down --
-- Tjunction max. --

Technical details

The AMD Athlon II X4 640 has 2.00 MB cache and is manufactured in 45 nm. The cache of Intel Pentium 3805U is at 2.00 MB. The processor is manufactured in 22 nm.

AMD Athlon II X4 640 Characteristic Intel Pentium 3805U
45 nm Technology 22 nm
Unknown Chip design Monolithic
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
MMX, 3DNow!, SSE3, SSE4a ISA extensions SSE4.1, SSE4.2
AM3 Socket BGA 1168
AMD-V Virtualization VT-x, VT-x EPT, VT-d
No AES-NI Yes
Windows 10, Linux Operating systems Windows 10, Linux
Q2/2010 Release date Q1/2015
-- Release price --
show more data show more data


Rate these processors

Here you can rate the AMD Athlon II X4 640 to help other visitors make their purchasing decisions. The average rating is 3.3 stars (6 ratings). Rate now:
Here you can rate the Intel Pentium 3805U to help other visitors make their purchasing decisions. The average rating is 0 stars (0 ratings). Rate now:


Average performance in benchmarks

⌀ Single core performance in 2 CPU benchmarks
AMD Athlon II X4 640 (89%)
Intel Pentium 3805U (100%)
⌀ Multi core performance in 3 CPU benchmarks
AMD Athlon II X4 640 (100%)
Intel Pentium 3805U (58%)

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.
AMD Athlon II X4 640 AMD Athlon II X4 640
4C 4T @ 3.00 GHz
386 (86%)
Intel Pentium 3805U Intel Pentium 3805U
2C 2T @ 1.90 GHz
451 (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.
AMD Athlon II X4 640 AMD Athlon II X4 640
4C 4T @ 3.00 GHz
1332 (100%)
Intel Pentium 3805U Intel Pentium 3805U
2C 2T @ 1.90 GHz
878 (66%)

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.
AMD Athlon II X4 640 AMD Athlon II X4 640
4C 4T @ 3.00 GHz
2161 (100%)
Intel Pentium 3805U Intel Pentium 3805U
2C 2T @ 1.90 GHz
1156 (53%)

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.
AMD Athlon II X4 640 AMD Athlon II X4 640
4C 4T @ 3.00 GHz
71 (92%)
Intel Pentium 3805U Intel Pentium 3805U
2C 2T @ 1.90 GHz
77 (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.
AMD Athlon II X4 640 AMD Athlon II X4 640
4C 4T @ 3.00 GHz
274 (100%)
Intel Pentium 3805U Intel Pentium 3805U
2C 2T @ 1.90 GHz
148 (54%)

Cinebench R23 (Single-Core)

Cinebench R23 is the successor of Cinebench R20 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.
AMD Athlon II X4 640 AMD Athlon II X4 640
4C 4T @ 3.00 GHz
389 (100%)
Intel Pentium 3805U Intel Pentium 3805U
2C 2T @ 1.90 GHz
0 (0%)

Cinebench R23 (Multi-Core)

Cinebench R23 is the successor of Cinebench R20 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.
AMD Athlon II X4 640 AMD Athlon II X4 640
4C 4T @ 3.00 GHz
1471 (100%)
Intel Pentium 3805U Intel Pentium 3805U
2C 2T @ 1.90 GHz
0 (0%)

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.
AMD Athlon II X4 640 AMD Athlon II X4 640
4C 4T @ 3.00 GHz
0 (0%)
Intel Pentium 3805U Intel Pentium 3805U
2C 2T @ 1.90 GHz
379 (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.
AMD Athlon II X4 640 AMD Athlon II X4 640
4C 4T @ 3.00 GHz
0 (0%)
Intel Pentium 3805U Intel Pentium 3805U
2C 2T @ 1.90 GHz
655 (100%)

Cinebench R20 (Single-Core)

Cinebench R20 is the successor of Cinebench R15 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.
AMD Athlon II X4 640 AMD Athlon II X4 640
4C 4T @ 3.00 GHz
152 (100%)
Intel Pentium 3805U Intel Pentium 3805U
2C 2T @ 1.90 GHz
0 (0%)

Cinebench R20 (Multi-Core)

Cinebench R20 is the successor of Cinebench R15 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.
AMD Athlon II X4 640 AMD Athlon II X4 640
4C 4T @ 3.00 GHz
582 (100%)
Intel Pentium 3805U Intel Pentium 3805U
2C 2T @ 1.90 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.
AMD Athlon II X4 640 AMD Athlon II X4 640
@ 0.00 GHz
0 (0%)
Intel Pentium 3805U Intel Pentium 3805U
Intel HD Graphics (Broadwell GT1) @ 0.80 GHz
154 (100%)

CPU-Z Benchmark 17 (Multi-Core)

The CPU-Z benchmark measures a processor's performance by measuring the time it takes the system to complete all benchmark calculations. The faster the benchmark is completed, the higher the score.
AMD Athlon II X4 640 AMD Athlon II X4 640
4C 4T @ 3.00 GHz
557 (100%)
Intel Pentium 3805U Intel Pentium 3805U
2C 2T @ 1.90 GHz
0 (0%)

Devices using this processor

AMD Athlon II X4 640 Intel Pentium 3805U
Unknown Unknown

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