AMD Ryzen 5 8640U vs Intel Core i3-1305U

Last updated: 2024-04-18

CPU comparison with benchmarks


AMD Ryzen 5 8640U		Intel Core i3-1305U
CPU comparison AMD Ryzen 5 8640U or Intel Core i3-1305U - 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 Ryzen 5 8640U has 6 cores with 12 threads and clocks with a maximum frequency of 4.90 GHz. Up to 256 GB of memory is supported in 2 memory channels. The AMD Ryzen 5 8640U was released in Q1/2024. The Intel Core i3-1305U has 5 cores with 6 threads and clocks with a maximum frequency of 4.50 GHz. The CPU supports up to 96 GB of memory in 2 memory channels. The Intel Core i3-1305U was released in Q1/2023.

AMD Ryzen 5 (85)	Family	Intel Core i3 (205)
AMD Ryzen 8040 (20)	CPU group	Intel Core i 1300P/1300U (29)
7	Generation	13
Hawk Point (Zen 4)	Architecture	Raptor Lake U
Mobile	Segment	Mobile
AMD Ryzen 5 7640U	Predecessor	--
--	Successor	--

CPU Cores and Base Frequency The AMD Ryzen 5 8640U has 6 CPU cores and can calculate 12 threads in parallel. The clock frequency of the AMD Ryzen 5 8640U is 3.50 GHz (4.90 GHz) while the Intel Core i3-1305U has 5 CPU cores and 6 threads can calculate simultaneously. The clock frequency of the Intel Core i3-1305U is at 1.60 GHz (4.50 GHz).
AMD Ryzen 5 8640U	Characteristic	Intel Core i3-1305U
6	Cores	5
12	Threads	6
normal	Core architecture	hybrid (big.LITTLE)
Yes	Hyperthreading	Yes
No	Overclocking ?	No
3.50 GHz (4.90 GHz) 6x Zen 4	A-Core	1.60 GHz (4.50 GHz) 1x Raptor Cove
--	B-Core	1.20 GHz (3.30 GHz) 4x Gracemont
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 Ryzen 5 8640U	Characteristic	Intel Core i3-1305U
--	AI hardware	--
--	AI specifications	--

Internal Graphics The AMD Ryzen 5 8640U or Intel Core i3-1305U 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 760M	GPU	Intel Iris Xe Graphics 64 (Alder Lake)
0.80 GHz	GPU frequency	0.35 GHz
2.60 GHz	GPU (Turbo)	1.25 GHz
10	GPU Generation	13
4 nm	Technology	10 nm
4	Max. displays	4
8	Compute units	64
512	Shader	512
Yes	Hardware Raytracing	No
AMD FSR	Frame Generation	No
32 GB	Max. GPU Memory	32 GB
12	DirectX Version	12.1

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 760M	GPU	Intel Iris Xe Graphics 64 (Alder Lake)
Decode / Encode	Codec h265 / HEVC (8 bit)	Decode / Encode
Decode / Encode	Codec h265 / HEVC (10 bit)	Decode / Encode
Decode / Encode	Codec h264	Decode / Encode
Decode	Codec VP9	Decode / Encode
Decode	Codec VP8	Decode
Decode / Encode	Codec AV1	Decode
Decode	Codec AVC	Decode / Encode
Decode	Codec VC-1	Decode
Decode / Encode	Codec JPEG	Decode / Encode

Memory & PCIe The AMD Ryzen 5 8640U can use up to 256 GB of memory in 2 memory channels. The maximum memory bandwidth is 120.0 GB/s. The Intel Core i3-1305U supports up to 96 GB of memory in 2 memory channels and achieves a memory bandwidth of up to 83.2 GB/s.
AMD Ryzen 5 8640U	Characteristic	Intel Core i3-1305U
DDR5-4800, DDR5-5600, LPDDR5-6400, LPDDR5X-7500	Memory	LPDDR5-5200, LPDDR4X-4266, DDR5-5200, DDR4-3200
256 GB	Max. Memory	96 GB
2 (Dual Channel)	Memory channels	2 (Dual Channel)
120.0 GB/s	Max. Bandwidth	83.2 GB/s
Yes	ECC	No
6.00 MB	L2 Cache	--
16.00 MB	L3 Cache	10.00 MB
4.0	PCIe version	4.0
20	PCIe lanes	20
39.4 GB/s	PCIe Bandwidth	39.4 GB/s
Thermal Management The thermal design power (TDP for short) of the AMD Ryzen 5 8640U is 28 W, while the Intel Core i3-1305U has a TDP of 15 W. The TDP specifies the necessary cooling solution that is required to cool the processor sufficiently.
AMD Ryzen 5 8640U	Characteristic	Intel Core i3-1305U
28 W	TDP (PL1 / PBP)	15 W
--	TDP (PL2)	55 W
30 W	TDP up	--
15 W	TDP down	12 W
100 °C	Tjunction max.	100 °C
Technical details The AMD Ryzen 5 8640U is manufactured in 4 nm and has 22.00 MB cache. The Intel Core i3-1305U is manufactured in 10 nm and has a 10.00 MB cache.
AMD Ryzen 5 8640U	Characteristic	Intel Core i3-1305U
4 nm	Technology	10 nm
Monolithic	Chip design	Monolithic
x86-64 (64 bit)	Instruction set (ISA)	x86-64 (64 bit)
SSE4a, SSE4.1, SSE4.2,FMA3, AVX2, AVX512	ISA extensions	SSE4.1, SSE4.2, AVX2
FP8	Socket	BGA 1744
AMD-V, SVM	Virtualization	VT-x, VT-x EPT, VT-d
Yes	AES-NI	Yes
Windows 10, Windows 11, Linux	Operating systems	Windows 10, Windows 11, Linux
Q1/2024	Release date	Q1/2023
--	Release price	--

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AMD Ryzen 5 8640U 6C 12T @ 3.50 GHz (4.90 GHz) buy now on Amazon and save! Intel Core i3-1305U 5C 6T @ 1.60 GHz (4.50 GHz) buy now on Amazon and save!

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Average performance in benchmarks

⌀ Single core performance in 2 CPU benchmarks

AMD Ryzen 5 8640U (100%)

Intel Core i3-1305U (86%)

⌀ Multi core performance in 2 CPU benchmarks

AMD Ryzen 5 8640U (100%)

Intel Core i3-1305U (42%)

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 Ryzen 5 8640U 6C 12T @ 4.90 GHz	1869 (100%)
	Intel Core i3-1305U 5C 6T @ 4.50 GHz	1488 (80%)

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 Ryzen 5 8640U 6C 12T @ 3.50 GHz	8853 (100%)
	Intel Core i3-1305U 5C 6T @ 1.60 GHz	3481 (39%)

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 Ryzen 5 8640U 6C 12T @ 4.90 GHz	2340 (100%)
	Intel Core i3-1305U 5C 6T @ 4.50 GHz	2124 (91%)

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 Ryzen 5 8640U 6C 12T @ 3.50 GHz	9197 (100%)
	Intel Core i3-1305U 5C 6T @ 1.60 GHz	4029 (44%)

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 Ryzen 5 8640U AMD Radeon 760M @ 2.60 GHz	2663 (100%)
	Intel Core i3-1305U Intel Iris Xe Graphics 64 (Alder Lake) @ 1.25 GHz	1240 (47%)

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 Ryzen 5 8640U 6C 12T @ 4.90 GHz	1552 (100%)
	Intel Core i3-1305U 5C 6T @ 4.50 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 Ryzen 5 8640U 6C 12T @ 3.50 GHz	10675 (100%)
	Intel Core i3-1305U 5C 6T @ 1.60 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 Ryzen 5 8640U 10,675 CB R23 MC @ 24 W	445 (100%)
	Intel Core i3-1305U 1.60 GHz	0 (0%)

Devices using this processor
AMD Ryzen 5 8640U	Intel Core i3-1305U
Unknown	Unknown

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