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Intel Core i9-11900K vs Intel Core 2 Quad Q8400

Intel Core i9-11900K on Amazon USA
Intel Core 2 Quad Q8400 on Amazon USA

Comparison of the technical characteristics between the processors, with the Intel Core i9-11900K on one side and the Intel Core 2 Quad Q8400 on the other side. The first is dedicated to the desktop sector, It has 8 cores, 16 threads, a maximum frequency of 5.3GHz. The second is used on the desktop segment, it has a total of 4 cores, 4 threads, its turbo frequency is set to 2.7 GHz. The following table also compares the lithography, the number of transistors (if indicated), the amount of cache memory, the maximum RAM memory capacity, the type of memory accepted, the release date, the maximum number of PCIe lanes, the values ​​obtained in Geekbench 4 and Cinebench R15.


Processor Intel Core i9-11900K Intel Core 2 Quad Q8400
Market Desktop Desktop
Family Rocket Lake Yorkfield
Part number(s), S-Spec Core i9-11900K BX80580Q8400,
Release date Q1 2021 Q2 2009
Lithography 14 nm+++ 45 nm
Transistors - 456,000,000
Cores 8 4
Threads 16 4
Base frequency 3.4 GHz 2.7 GHz
Turbo frequency 5.3 GHz -
Cache memory 16 MB 6 MB
Max memory capacity 128 GB 16 GB
Memory types DDR4-3200 DDR3-1333
Max PCIe lanes 20 16
TDP 125 W 95 W
GPU integrated graphics Intel UHD Graphics 630 (Rocket Lake) None
GPU execution units 24 -
GPU shading units 192 -
GPU base clock rate 350 MHz -
GPU max clock rate 1200 MHz -
Socket LGA1200 LGA775
CPU-Z single thread 708 312
CPU-Z multi thread 6,443 1,267
Cinebench R15 single thread 245 64
Cinebench R15 multi-thread 2,140 231
Cinebench R20 single thread 604 134
Cinebench R20 multi-thread 5,748 490
PassMark single thread 3,754 1,160
PassMark CPU Mark 28,072 2,040
Geekbench 5 single core
1,808 374
Geekbench 5 multi-core
9,914 1,203

We can better compare what are the technical differences between the two processors. The processor Intel Core i9-11900K has more cores, the maximum frequency of Intel Core i9-11900K is greater, that the thermal dissipation power of Intel Core 2 Quad Q8400 is less. The Intel Core i9-11900K was designed earlier.

Performances :

Performance comparison between the two processors, for this we consider the results generated on benchmark software such as Geekbench 4.

CPU-Z - Multi-thread & single thread score
Intel Core i9-11900K#ad 708
Intel Core 2 Quad Q8400#ad 312

In single core, the difference is 127%. In multi-core, the differential gap is 409%.

CPU-Z is a system information software that provides the name of the processor, its model number, the codename, the cache levels, the package, the process. It can also gives data about the mainboard, the memory. It makes real time measurement, with finally a benchmark for the single thread, as well as for the multi thread.

Cinebench R15 - Multi-thread & single thread score
Intel Core i9-11900K#ad 245
Intel Core 2 Quad Q8400#ad 64

In single core, the difference is 283%. In multi-core, the differential gap is 826%.

Cinebench R15 evaluates the performance of CPU calculations by restoring a photorealistic 3D scene. The scene has 2,000 objects, 300,000 polygons, uses sharp and fuzzy reflections, bright areas, shadows, procedural shaders, antialiasing, and so on. The faster the rendering of the scene is created, the more powerful the PC is, with a high number of points.

Cinebench R20 - Multi-thread & single thread score
Intel Core i9-11900K#ad 604
Intel Core 2 Quad Q8400#ad 134

In single core, the difference is 351%. In multi-core, the differential gap is 1073%.

Cinebench R20 is a multi-platform test software which allows to evaluate the hardware capacities of a device such as a computer, a tablet, a server. This version of Cinebench takes into account recent developments in processors with multiple cores and the latest improvements in rendering techniques. The evaluation is ultimately even more relevant.

PassMark - CPU Mark & single thread
Intel Core i9-11900K#ad 3,754
Intel Core 2 Quad Q8400#ad 1,160

In single core, the difference is 224%. In multi-core, the differential gap is 1276%.

PassMark is a benchmarking software that performs several performance tests including prime numbers, integers, floating point, compression, physics, extended instructions, encoding, sorting. The higher the score is, the higher is the device capacity.

On Windows:

Geekbench 5 - Multi-core & single core score - Windows
Intel Core i9-11900K#ad 1,808
Intel Core 2 Quad Q8400#ad 374

In single core, the difference is 383%. In multi-core, the differential gap is 724%.

Geekbench 5 is a software for measuring the performance of a computer system, for fixed devices, mobile devices, servers. This platform makes it possible to better compare the power of the CPU, the computing power and to compare it with similar or totally different systems. Geekbench 5 includes new workloads that represent work tasks and applications that we can find in reality.


Intel Core i9-11900K AMD equivalentIntel Core 2 Quad Q8400 AMD equivalent

See also:

Intel Core i9-11900Intel Core i9-11900T © 2021 - Privacy policy - Advertising policy


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