AMD C-70 vs AMD Ryzen 5 8640U

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CPU comparison with benchmarks


AMD C-70 CPU1 vs CPU2 AMD Ryzen 5 8640U
AMD C-70 AMD Ryzen 5 8640U

CPU comparison

AMD C-70 or AMD Ryzen 5 8640U - 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 AMD C-70 has 2 cores with 2 threads and clocks with a maximum frequency of 1.33 GHz. Up to GB of memory is supported in 1 memory channels. The AMD C-70 was released in Q3/2012.

The AMD Ryzen 5 8640U has 6 cores with 12 threads and clocks with a maximum frequency of 4.90 GHz. The CPU supports up to 256 GB of memory in 2 memory channels. The AMD Ryzen 5 8640U was released in Q1/2024.
AMD C (6) Family AMD Ryzen 5 (85)
AMD C (6) CPU group AMD Ryzen 8040 (20)
1 Generation 7
Ontario (Bobcat) Architecture Hawk Point (Zen 4)
Mobile Segment Mobile
-- Predecessor AMD Ryzen 5 7640U
-- Successor --

CPU Cores and Base Frequency

The AMD C-70 has 2 CPU cores and can calculate 2 threads in parallel. The clock frequency of the AMD C-70 is 1.00 GHz (1.33 GHz) while the AMD Ryzen 5 8640U has 6 CPU cores and 12 threads can calculate simultaneously. The clock frequency of the AMD Ryzen 5 8640U is at 3.50 GHz (4.90 GHz).
AMD C-70 Characteristic AMD Ryzen 5 8640U
2 Cores 6
2 Threads 12
normal Core architecture normal
No Hyperthreading Yes
Yes Overclocking ? No
1.00 GHz Frequency 3.50 GHz
1.33 GHz Turbo Frequency (1 Core) 4.90 GHz
1.33 GHz 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 C-70 Characteristic AMD Ryzen 5 8640U
-- AI hardware --
-- AI specifications --

Internal Graphics

The AMD C-70 or AMD Ryzen 5 8640U 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.
AMD Radeon HD 6290 GPU AMD Radeon 760M
0.28 GHz GPU frequency 0.80 GHz
0.40 GHz GPU (Turbo) 2.60 GHz
3 GPU Generation 10
40 nm Technology 4 nm
2 Max. displays 4
1 Compute units 8
80 Shader 512
No Hardware Raytracing Yes
No Frame Generation AMD FSR
1 GB Max. GPU Memory 32 GB
11 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.
AMD Radeon HD 6290 GPU AMD Radeon 760M
No Codec h265 / HEVC (8 bit) Decode / Encode
No Codec h265 / HEVC (10 bit) Decode / Encode
Decode Codec h264 Decode / Encode
No Codec VP9 Decode
No Codec VP8 Decode
No Codec AV1 Decode / Encode
Decode Codec AVC Decode
Decode Codec VC-1 Decode
Decode / Encode Codec JPEG Decode / Encode

Memory & PCIe

The AMD C-70 can use up to GB of memory in 1 memory channels. The maximum memory bandwidth is 8.5 GB/s. The AMD Ryzen 5 8640U supports up to 256 GB of memory in 2 memory channels and achieves a memory bandwidth of up to 120.0 GB/s.
AMD C-70 Characteristic AMD Ryzen 5 8640U
DDR3-1066 Memory DDR5-4800, DDR5-5600, LPDDR5-6400, LPDDR5X-7500
Max. Memory 256 GB
1 (Single Channel) Memory channels 2 (Dual Channel)
8.5 GB/s Max. Bandwidth 120.0 GB/s
No ECC Yes
-- L2 Cache 6.00 MB
1.00 MB L3 Cache 16.00 MB
-- PCIe version 4.0
-- PCIe lanes 20
-- PCIe Bandwidth 39.4 GB/s

Thermal Management

The thermal design power (TDP for short) of the AMD C-70 is 9 W, while the AMD Ryzen 5 8640U has a TDP of 28 W. The TDP specifies the necessary cooling solution that is required to cool the processor sufficiently.
AMD C-70 Characteristic AMD Ryzen 5 8640U
9 W TDP (PL1 / PBP) 28 W
-- TDP (PL2) --
-- TDP up 30 W
-- TDP down 15 W
-- Tjunction max. 100 °C

Technical details

The AMD C-70 is manufactured in 40 nm and has 1.00 MB cache. The AMD Ryzen 5 8640U is manufactured in 4 nm and has a 22.00 MB cache.
AMD C-70 Characteristic AMD Ryzen 5 8640U
40 nm Technology 4 nm
Unknown Chip design Monolithic
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
SSE3, SSE4a ISA extensions SSE4a, SSE4.1, SSE4.2,FMA3, AVX2, AVX512
BGA 413 Socket FP8
AMD-V Virtualization AMD-V, SVM
No AES-NI Yes
Operating systems Windows 10, Windows 11, Linux
Q3/2012 Release date Q1/2024
-- Release price --
show more data show more data


Rate these processors

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Here you can rate the AMD Ryzen 5 8640U to help other visitors make their purchasing decisions. The average rating is 4.5 stars (2 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.
AMD C-70 AMD C-70
AMD Radeon HD 6290 @ 0.40 GHz
64 (2%)
AMD Ryzen 5 8640U AMD Ryzen 5 8640U
AMD Radeon 760M @ 2.60 GHz
2663 (100%)

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 C-70 AMD C-70
2C 2T @ 1.33 GHz
0 (0%)
AMD Ryzen 5 8640U AMD Ryzen 5 8640U
6C 12T @ 4.90 GHz
1552 (100%)

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 C-70 AMD C-70
2C 2T @ 1.33 GHz
0 (0%)
AMD Ryzen 5 8640U AMD Ryzen 5 8640U
6C 12T @ 3.50 GHz
10675 (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.
AMD C-70 AMD C-70
2C 2T @ 1.33 GHz
0 (0%)
AMD Ryzen 5 8640U AMD Ryzen 5 8640U
6C 12T @ 4.90 GHz
1869 (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 C-70 AMD C-70
2C 2T @ 1.33 GHz
0 (0%)
AMD Ryzen 5 8640U AMD Ryzen 5 8640U
6C 12T @ 3.50 GHz
8853 (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.
AMD C-70 AMD C-70
2C 2T @ 1.33 GHz
0 (0%)
AMD Ryzen 5 8640U AMD Ryzen 5 8640U
6C 12T @ 4.90 GHz
2340 (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 C-70 AMD C-70
2C 2T @ 1.33 GHz
0 (0%)
AMD Ryzen 5 8640U AMD Ryzen 5 8640U
6C 12T @ 3.50 GHz
9197 (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.
AMD C-70 AMD C-70
2C 2T @ 1.33 GHz
598 (100%)
AMD Ryzen 5 8640U AMD Ryzen 5 8640U
6C 12T @ 3.50 GHz
0 (0%)

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 C-70 AMD C-70
2C 2T @ 1.00 GHz
73 (100%)
AMD Ryzen 5 8640U AMD Ryzen 5 8640U
6C 12T @ 3.50 GHz
0 (0%)

CPU performance per watt (efficiency)

Efficiency of the processor under full load in the Cinebench R23 (multi-core) benchmark. The benchmark result is divided by the average energy required (CPU package power in watts). The higher the value, the more efficient the CPU is under full load.
AMD C-70 AMD C-70
1.00 GHz
0 (0%)
AMD Ryzen 5 8640U AMD Ryzen 5 8640U
10,675 CB R23 MC @ 24 W
445 (100%)

Devices using this processor
AMD C-70 AMD Ryzen 5 8640U
Unknown Unknown

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