Intel Core 2 Quad Q8400 vs Intel Atom x6425E Benchmark, comparison and differences


Intel Core 2 Quad Q8400		Intel Atom x6425E
CPU comparison In this CPU comparison, we compare the Intel Core 2 Quad Q8400 and the Intel Atom x6425E and use benchmarks to check which processor is faster. We compare the Intel Core 2 Quad Q8400 4 core processor released in Q2/2009 with the Intel Atom x6425E which has 4 CPU cores and was introduced in Q1/2021.

Intel Core2 Quad (19)	Family	Intel Atom (108)
Intel Core 2 Quad Q8000/Q9000 (16)	CPU group	Intel Atom x6000 (10)
2	Generation	6
Yorkfield (Penryn)	Architecture	Elkhart Lake
Desktop / Server	Segment	Mobile
--	Predecessor	--
--	Successor	Intel Atom x7425E

CPU Cores and Base Frequency The Intel Core 2 Quad Q8400 is a 4 core processor with a clock frequency of 2.66 GHz. The processor can compute 4 threads at the same time. The Intel Atom x6425E clocks with 2.00 GHz (3.00 GHz), has 4 CPU cores and can calculate 4 threads in parallel.
Intel Core 2 Quad Q8400	Characteristic	Intel Atom x6425E
4	Cores	4
4	Threads	4
normal	Core architecture	normal
No	Hyperthreading	No
No	Overclocking ?	No
2.66 GHz	Frequency	2.00 GHz
--	Turbo Frequency (1 Core)	3.00 GHz
--	Turbo Frequency (All Cores)	2.70 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 Core 2 Quad Q8400	Characteristic	Intel Atom x6425E
--	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 UHD Graphics 10th Gen (32 EU)
	GPU frequency	0.50 GHz
--	GPU (Turbo)	0.75 GHz
--	GPU Generation	11
	Technology	14 nm
	Max. displays	3
--	Compute units	32
--	Shader	256
No	Hardware Raytracing	No
No	Frame Generation	No
--	Max. GPU Memory	64 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 10th Gen (32 EU)
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	Decode
No	Codec AVC	Decode / Encode
No	Codec VC-1	Decode
No	Codec JPEG	Decode / Encode

Memory & PCIe Up to 16 GB of memory in a maximum of 2 memory channels is supported by the Intel Core 2 Quad Q8400, while the Intel Atom x6425E supports a maximum of 32 GB of memory with a maximum memory bandwidth of 119.2 GB/s enabled.
Intel Core 2 Quad Q8400	Characteristic	Intel Atom x6425E
DDR3-1066, DDR2-800	Memory	LPDDR4X-3733, DDR4-3200
16 GB	Max. Memory	32 GB
2 (Dual Channel)	Memory channels	4 (Quad Channel)
17.1 GB/s	Max. Bandwidth	119.2 GB/s
No	ECC	Yes
4.00 MB	L2 Cache	1.50 MB
--	L3 Cache	--
--	PCIe version	3.0
--	PCIe lanes	8
--	PCIe Bandwidth	7.9 GB/s
Thermal Management The Intel Core 2 Quad Q8400 has a TDP of 95 W. The TDP of the Intel Atom x6425E is 12 W. System integrators use the TDP of the processor as a guide when dimensioning the cooling solution.
Intel Core 2 Quad Q8400	Characteristic	Intel Atom x6425E
95 W	TDP (PL1 / PBP)	12 W
--	TDP (PL2)	--
--	TDP up	--
--	TDP down	--
--	Tjunction max.	105 °C
Technical details The Intel Core 2 Quad Q8400 has 4.00 MB cache and is manufactured in 45 nm. The cache of Intel Atom x6425E is at 1.50 MB. The processor is manufactured in 10 nm.
Intel Core 2 Quad Q8400	Characteristic	Intel Atom x6425E
45 nm	Technology	10 nm
Monolithic	Chip design	Monolithic
x86-64 (64 bit)	Instruction set (ISA)	x86-64 (64 bit)
MMX, SSE2, SSE3, SSE4.1	ISA extensions	SSE4.1, SSE4.2
LGA 775	Socket	BGA 1493
VT-x, VT-d	Virtualization	VT-x, VT-x EPT, VT-d
No	AES-NI	Yes
Windows 10, Linux	Operating systems
Q2/2009	Release date	Q1/2021
--	Release price	56 $

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Intel Core 2 Quad Q8400 4C 4T @ 2.66 GHz buy now on Amazon and save! Intel Atom x6425E 4C 4T @ 2.00 GHz (3.00 GHz) buy now on Amazon and save!

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Average performance in benchmarks

⌀ Single core performance in 1 CPU benchmarks

Intel Core 2 Quad Q8400 (55%)

Intel Atom x6425E (100%)

⌀ Multi core performance in 2 CPU benchmarks

Intel Core 2 Quad Q8400 (54%)

Intel Atom x6425E (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 Core 2 Quad Q8400 4C 4T @ 2.66 GHz	369 (55%)
	Intel Atom x6425E 4C 4T @ 3.00 GHz	676 (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 Core 2 Quad Q8400 4C 4T @ 2.66 GHz	1155 (56%)
	Intel Atom x6425E 4C 4T @ 2.70 GHz	2055 (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 Core 2 Quad Q8400 4C 4T @ 2.66 GHz	2029 (52%)
	Intel Atom x6425E 4C 4T @ 2.70 GHz	3885 (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 Core 2 Quad Q8400 4C 4T @ 2.66 GHz	0 (0%)
	Intel Atom x6425E 4C 4T @ 3.00 GHz	539 (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 Core 2 Quad Q8400 4C 4T @ 2.66 GHz	0 (0%)
	Intel Atom x6425E 4C 4T @ 2.70 GHz	1434 (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 Core 2 Quad Q8400 @ 0.00 GHz	0 (0%)
	Intel Atom x6425E Intel UHD Graphics 10th Gen (32 EU) @ 0.75 GHz	400 (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.


	Intel Core 2 Quad Q8400 4C 4T @ 2.66 GHz	894 (100%)
	Intel Atom x6425E 4C 4T @ 2.00 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 Core 2 Quad Q8400 4C 4T @ 2.66 GHz	0 (0%)
	Intel Atom x6425E 4C 4T @ 3.00 GHz	114 (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 Core 2 Quad Q8400 4C 4T @ 2.66 GHz	0 (0%)
	Intel Atom x6425E 4C 4T @ 2.70 GHz	335 (100%)

Devices using this processor
Intel Core 2 Quad Q8400	Intel Atom x6425E
Unknown	Unknown


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Intel Core 2 Quad Q8400 vs Intel Atom x6425E

CPU comparison with benchmarks

CPU comparison

CPU Cores and Base Frequency

Artificial Intelligence and Machine Learning

Internal Graphics

Hardware codec support

Memory & PCIe

Thermal Management

Technical details