Intel Core i9-11900K vs Intel Celeron 4305U

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CPU comparison with benchmarks


Intel Core i9-11900K CPU1 vs CPU2 Intel Celeron 4305U
Intel Core i9-11900K Intel Celeron 4305U

CPU comparison

In this CPU comparison, we compare the Intel Core i9-11900K and the Intel Celeron 4305U and use benchmarks to check which processor is faster.

We compare the Intel Core i9-11900K 8 core processor released in Q1/2021 with the Intel Celeron 4305U which has 2 CPU cores and was introduced in Q2/2019.
Intel Core i9 (78) Family Intel Celeron (165)
Intel Core i 11000 (22) CPU group Intel Celeron 4000 (3)
11 Generation 8
Rocket Lake S Architecture Whiskey Lake U
Desktop / Server Segment Mobile
Intel Core i9-10900K Predecessor --
Intel Core i9-12900K Successor Intel Celeron 5305U

CPU Cores and Base Frequency

The Intel Core i9-11900K is a 8 core processor with a clock frequency of 3.50 GHz (5.30 GHz). The processor can compute 16 threads at the same time. The Intel Celeron 4305U clocks with 2.20 GHz, has 2 CPU cores and can calculate 2 threads in parallel.

Intel Core i9-11900K Characteristic Intel Celeron 4305U
8 Cores 2
16 Threads 2
normal Core architecture normal
Yes Hyperthreading No
Yes Overclocking ? No
3.50 GHz Frequency 2.20 GHz
5.30 GHz Turbo Frequency (1 Core) --
4.80 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.

Intel Core i9-11900K Characteristic Intel Celeron 4305U
-- 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.

Intel UHD Graphics 750 GPU Intel UHD Graphics 610
0.35 GHz GPU frequency 0.30 GHz
1.30 GHz GPU (Turbo) 0.90 GHz
12 GPU Generation 9.5
14 nm Technology 14 nm
3 Max. displays 3
32 Compute units 12
256 Shader 96
No Hardware Raytracing No
No Frame Generation No
64 GB Max. GPU Memory 32 GB
12 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.

Intel UHD Graphics 750 GPU Intel UHD Graphics 610
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 / Encode Codec VP9 Decode / Encode
Decode Codec VP8 Decode / Encode
Decode Codec AV1 No
Decode / Encode Codec AVC Decode / Encode
Decode Codec VC-1 Decode
Decode / Encode Codec JPEG Decode / Encode

Memory & PCIe

Up to 128 GB of memory in a maximum of 2 memory channels is supported by the Intel Core i9-11900K, while the Intel Celeron 4305U supports a maximum of 64 GB of memory with a maximum memory bandwidth of 34.1 GB/s enabled.

Intel Core i9-11900K Characteristic Intel Celeron 4305U
DDR4-3200 Memory LPDDR3-1866, DDR4-2133
128 GB Max. Memory 64 GB
2 (Dual Channel) Memory channels 2 (Dual Channel)
51.2 GB/s Max. Bandwidth 34.1 GB/s
No ECC No
4.00 MB L2 Cache --
16.00 MB L3 Cache 2.00 MB
4.0 PCIe version 3.0
20 PCIe lanes 16
39.4 GB/s PCIe Bandwidth 15.8 GB/s

Thermal Management

The Intel Core i9-11900K has a TDP of 125 W. The TDP of the Intel Celeron 4305U is 15 W. System integrators use the TDP of the processor as a guide when dimensioning the cooling solution.

Intel Core i9-11900K Characteristic Intel Celeron 4305U
125 W TDP (PL1 / PBP) 15 W
251 W @ 56 s TDP (PL2) --
-- TDP up --
95 W TDP down 12.5 W
100 °C Tjunction max. 100 °C

Technical details

The Intel Core i9-11900K has 20.00 MB cache and is manufactured in 14 nm. The cache of Intel Celeron 4305U is at 2.00 MB. The processor is manufactured in 14 nm.

Intel Core i9-11900K Characteristic Intel Celeron 4305U
14 nm Technology 14 nm
Monolithic Chip design Monolithic
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
SSE4.1, SSE4.2, AVX2, AVX-512 ISA extensions SSE4.1, SSE4.2, AVX2
LGA 1200 Socket BGA 1528
VT-x, VT-x EPT, VT-d Virtualization VT-x, VT-x EPT, VT-d
Yes AES-NI Yes
Windows 10, Windows 11, Linux Operating systems Windows 10, Windows 11, Linux
Q1/2021 Release date Q2/2019
539 $ Release price 107 $
show more data show more data


Rate these processors

Here you can rate the Intel Core i9-11900K to help other visitors make their purchasing decisions. The average rating is 4.3 stars (10 ratings). Rate now:
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Average performance in benchmarks

⌀ Single core performance in 1 CPU benchmarks
Intel Core i9-11900K (100%)
Intel Celeron 4305U (30%)
⌀ Multi core performance in 2 CPU benchmarks
Intel Core i9-11900K (100%)
Intel Celeron 4305U (8%)

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 i9-11900K Intel Core i9-11900K
8C 16T @ 5.30 GHz
1878 (100%)
Intel Celeron 4305U Intel Celeron 4305U
2C 2T @ 2.20 GHz
570 (30%)

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 i9-11900K Intel Core i9-11900K
8C 16T @ 4.80 GHz
11645 (100%)
Intel Celeron 4305U Intel Celeron 4305U
2C 2T @ 2.20 GHz
1076 (9%)

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 i9-11900K Intel Core i9-11900K
Intel UHD Graphics 750 @ 1.30 GHz
666 (100%)
Intel Celeron 4305U Intel Celeron 4305U
Intel UHD Graphics 610 @ 0.90 GHz
173 (26%)

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 i9-11900K Intel Core i9-11900K
8C 16T @ 4.80 GHz
25385 (100%)
Intel Celeron 4305U Intel Celeron 4305U
2C 2T @ 2.20 GHz
1746 (7%)

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.
Intel Core i9-11900K Intel Core i9-11900K
8C 16T @ 5.30 GHz
1686 (100%)
Intel Celeron 4305U Intel Celeron 4305U
2C 2T @ 2.20 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.
Intel Core i9-11900K Intel Core i9-11900K
8C 16T @ 4.80 GHz
16211 (100%)
Intel Celeron 4305U Intel Celeron 4305U
2C 2T @ 2.20 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.
Intel Core i9-11900K Intel Core i9-11900K
8C 16T @ 5.30 GHz
2491 (100%)
Intel Celeron 4305U Intel Celeron 4305U
2C 2T @ 2.20 GHz
0 (0%)

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 i9-11900K Intel Core i9-11900K
8C 16T @ 4.80 GHz
12679 (100%)
Intel Celeron 4305U Intel Celeron 4305U
2C 2T @ 2.20 GHz
0 (0%)

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.
Intel Core i9-11900K Intel Core i9-11900K
8C 16T @ 5.30 GHz
650 (100%)
Intel Celeron 4305U Intel Celeron 4305U
2C 2T @ 2.20 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.
Intel Core i9-11900K Intel Core i9-11900K
8C 16T @ 4.80 GHz
6187 (100%)
Intel Celeron 4305U Intel Celeron 4305U
2C 2T @ 2.20 GHz
0 (0%)

Blender 3.1 Benchmark

In the Blender Benchmark 3.1, the scenes "monster", "junkshop" and "classroom" are rendered and the time required by the system is measured. In our benchmark we test the CPU and not the graphics card. Blender 3.1 was presented as a standalone version in March 2022.
Intel Core i9-11900K Intel Core i9-11900K
8C 16T @ 4.80 GHz
243 (100%)
Intel Celeron 4305U Intel Celeron 4305U
2C 2T @ 2.20 GHz
0 (0%)

CPU-Z Benchmark 17 (Single-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 i9-11900K Intel Core i9-11900K
8C 16T @ 4.80 GHz
676 (100%)
Intel Celeron 4305U Intel Celeron 4305U
2C 2T @ 2.20 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.
Intel Core i9-11900K Intel Core i9-11900K
8C 16T @ 3.50 GHz
6539 (100%)
Intel Celeron 4305U Intel Celeron 4305U
2C 2T @ 2.20 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 i9-11900K Intel Core i9-11900K
8C 16T @ 5.30 GHz
262 (100%)
Intel Celeron 4305U Intel Celeron 4305U
2C 2T @ 2.20 GHz
0 (0%)

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 i9-11900K Intel Core i9-11900K
8C 16T @ 4.80 GHz
2515 (100%)
Intel Celeron 4305U Intel Celeron 4305U
2C 2T @ 2.20 GHz
0 (0%)

Devices using this processor

Intel Core i9-11900K Intel Celeron 4305U
Unknown Unknown

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