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Differences
Top features of Intel Core i5-8400
-
Performance per watt65 W
165 W
About 2.54 0.97 times less performance per watt
Top features of Intel Core i9-9820X
-
Higher clock speed3.30 GHz
2.80 GHz
Around 15% better clock speed
-
More number of cores10
6
2 times more cores
-
Higher turbo clock speed4.20 GHz
4.00 GHz
Around 5 % better overclocked clock speed
Specifications
Complete list of technical specificationsCPU generation and family
Let's find out which one of Intel Core i5-8400 and Intel Core i9-9820X is of a more recent generation, and what segment it belongs to.
| Specification | Value |
|---|---|
| Name |
Intel Core i5-8400
Intel Core i9-9820X
|
| Segment |
Desktop / Server
Desktop / Server
|
| Family |
Intel Core i5
Intel Core i9
|
| Generation |
8
9
|
| CPU group |
Intel Core i 8000
Intel Core i 9000X
|
| Predecessor |
Intel Core i5-7400
--
|
| Successor |
Intel Core i5-9400
--
|
CPU Cores and Base Frequency
In this block we are going to compare Intel Core i5-8400 vs Intel Core i9-9820X by main technical specifications: number of cores and threads, base and maximum frequencies, process technology and cache size. The higher these specifications are, the more powerful your CPU will be.
| Specification | Value |
|---|---|
| Frequency |
2.80 GHz
3.30 GHz
|
| CPU Cores |
6
10
|
| Turbo (1 Core) |
4.00 GHz
4.20 GHz
|
| CPU Threads |
6
20
|
| Hyperthreading |
No
Yes
|
| Overclocking |
No
Yes
|
| Core architecture |
normal
normal
|
Internal Graphics
Common specifications for integrated graphics cards in Intel Core i5-8400 and Intel Core i9-9820X along with supported interfaces and connection options. This block has no effect on the final efficiency of the CPU.
| Specification | Value |
|---|---|
| GPU name |
Intel UHD Graphics 630
no iGPU
|
| GPU frequency |
0.35 GHz
|
| GPU (Turbo) |
1.15 GHz
No turbo
|
| Execution units |
24
|
| Shader |
192
|
| Max. GPU Memory |
64 GB
--
|
| Max. displays |
3
|
| Generation |
9.5
|
| DirectX Version |
12
|
| Technology |
14 nm
|
| Release date |
Q4/2017
|
Hardware codec support
Let's compare the support of video codecs between Intel Core i5-8400 and Intel Core i9-9820X. Hardware support of video decoding by embedded graphics cards directly affects the speed and quality of rendering videos.
| Specification | Value |
|---|---|
| h265 / HEVC (8 bit) |
Decode / Encode
No
|
| h265 / HEVC (10 bit) |
Decode / Encode
No
|
| h264 |
Decode / Encode
No
|
| VP9 |
Decode / Encode
No
|
| VP8 |
Decode / Encode
No
|
| AV1 |
No
No
|
| AVC |
Decode / Encode
No
|
| VC-1 |
Decode
No
|
| JPEG |
Decode / Encode
No
|
Memory & PCIe
To choose the best model between Intel Core i5-8400 and Intel Core i9-9820X you need to pay special attention to memory type, clock frequency, multi-channel features, and PCIe version. The higher these numbers are, the better your CPU will be. Keep in mind that the maximum memory and frequency may also depend on the model of the motherboard.
| Specification | Value |
|---|---|
| Memory type |
DDR4-2666
DDR4-2666
|
| Max. Memory |
128 GB
128 GB
|
| ECC |
No
No
|
| Memory channels |
2
4
|
| PCIe version |
3.0
3.0
|
| PCIe lanes |
16
44
|
Encryption
AES-NI encryption support for CPUs Intel Core i5-8400 and Intel Core i9-9820X.
| Specification | Value |
|---|---|
| AES-NI |
Yes
Yes
|
Thermal Management
Let's find out what TDP value would be better for Intel Core i5-8400 or Intel Core i9-9820X? The Thermal Design Power (TDP) indicates the maximum amount of heat that should be dissipated by the chip cooling system. However, the value of TDP gives only a rough indication of the real power consumption of the CPU.
| Specification | Value |
|---|---|
| TDP (PL1) |
65 W
165 W
|
| Tjunction max. |
--
95 °C
|
Technical details
Here you can find a comparison of 2nd and 3rd level cache sizes for Intel Core i5-8400 and Intel Core i9-9820X CPUs along with a list of ISA extensions.
| Specification | Value |
|---|---|
| Instruction set (ISA) |
x86-64 (64 bit)
x86-64 (64 bit)
|
| Virtualization |
VT-x, VT-x EPT, VT-d
VT-x, VT-x EPT, VT-d
|
| ISA extensions |
SSE4.1, SSE4.2, AVX2
SSE4.1, SSE4.2, AVX2, AVX-512
|
| L3-Cache |
9.00 MB
17.00 MB
|
| Architecture |
Coffee Lake S
Skylake X Refresh
|
| Technology |
14 nm
14 nm
|
| Socket |
LGA 1151-2
LGA 2066
|
| Release date |
Q4/2017
Q4/2018
|
Devices using this processor
List of devices based on Intel Core i5-8400 and Intel Core i9-9820X.
| Specification | Value |
|---|---|
| Used in |
Unknown
Unknown
|
