Intel Core i5-8400 vs i9-9900K
| 14 Nov19|PCGamer AMD Ryzen 9 3950X review |
14 % | Hitm2 17%, FarC5 20%, StrangeB 1%, TWarW2 20%, SotTR 26%, ACO 22%, MetroEx 2%, MESoW 8%, Divis2 12% | ||||
| 28 May20|Techpowerup Intel Core i5-10400F Review — Six … |
9 % | FarC5 16%, BFV 12%, SotTR 1%, Rage2 3%, Witcher3 1%, Civ6 17%, ACO 27%, Sekiro 12%, Wolf2 0% | MetroEx 3% | |||
| 30 Oct19|Gamers Nexus Intel i9-9900KS Review: Overclocki… |
25 % | Hitm2 40%, TWarW2 21%, F118 20%, GTAV 19%, SotTR 23% |
| Memory Avg. |
93.1 Pts | Slightly lower memory latency. +10% |
84.9 Pts | |||
| 1-Core Avg. Single Core Speed |
142 Pts | Faster single-core speed. +26% |
113 Pts | |||
| 2-Core Avg. Dual Core Speed |
281 Pts | Faster dual-core speed. +25% |
224 Pts | |||
| 4-Core Avg. Quad Core Speed |
551 Pts | Faster quad-core speed. +27% |
434 Pts | |||
| 8-Core Avg. Octa Core Speed |
981 Pts | Much faster octa-core speed. +74% |
564 Pts |
| Memory OC Memory Latency |
97. 2 Pts |
+3% | 94.2 Pts | |||
| 1-Core OC Single Core Speed |
153 Pts | Faster OC single-core speed. +28% |
120 Pts | |||
| 2-Core OC Dual Core Speed |
305 Pts | Faster OC dual-core speed. +29% |
237 Pts | |||
| 4-Core OC Quad Core Speed |
604 Pts | Faster OC quad-core speed. +28% |
471 Pts | |||
| 8-Core OC Octa Core Speed |
1116 Pts | Much faster OC octa-core speed. +70% |
657 Pts |
| Age Newest |
51 Months | More recent. +19% |
63 Months | |||
| TDP Thermal Design Power (TDP) |
95 Watts | 65 Watts | Much more energy efficient. +32% |
|||
| Cores CPU Processing Cores |
8 cores | Much higher core count. +33% |
6 cores | |||
| Threads CPU Processing Threads |
16 threads | Hugely higher thread count. +167% |
6 threads | |||
| Lithography Manufacturing process |
14 nm | 14 nm | ||||
| Base Clock Base Clock Speed |
3.6 GHz | Faster base frequency. +29% |
2. 8 GHz |
|||
| Turbo Clock Turbo Clock Speed |
5 GHz | Faster turbo frequency. +25% |
4 GHz | |||
| 64-Core OC Multi Core Speed |
1590 Pts | Hugely faster OC 64-core speed. +136% |
675 Pts | |||
| 64-Core Avg. Multi Core Speed |
1451 Pts | Hugely faster 64-core speed. +147% |
588 Pts |
| Series CPU Architecture |
Coffee Lake | Coffee Lake | ||||
| Socket Motherboard Socket |
FCLGA1151 | FCLGA1151 | ||||
| Graphics Integrated Graphics |
UHD 630 | UHD 630 | ||||
| Launch Date Launch Date |
Q4’18 | Q4’17 | ||||
| Cache Cache |
16 MB SmartCache | 9 MB | ||||
| Instruction Set Extensions Instruction Set Extensions |
Intel® SSE4. 1, Intel® SSE4.2, Intel® AVX2 |
SSE4.1/4.2, AVX2 | ||||
| Recommended Price Recommended Customer Price |
$488.00 — $499.00 | N/A | ||||
| Max Turbo Frequency Max Turbo Frequency |
5.00 GHz | 4.00 GHz | ||||
| Thermal Solution Specification Thermal Solution Specification |
PCG 2015D (130W) | PCG 2015C (65W) | ||||
| Graphics Max Dynamic Frequency Graphics Max Dynamic Frequency |
1.20 GHz | 1.05 GHz | ||||
| Hyper-Threading Tech Intel® Hyper-Threading Technology ‡ |
Yes | No | ||||
| TSX-NI Intel® TSX-NI |
Yes | No | ||||
| Stable Image Platform Program (SIPP) Intel® Stable Image Platform Program (SIPP) |
Yes | No | ||||
| Trusted Execution Tech Intel® Trusted Execution Technology ‡ |
Yes | No | ||||
| PCI Express Configurations PCI Express Configurations ‡ |
Up to 1×16, 2×8, 1×8+2×4 | Up to 1×16 or 2×8 or 1×8+2×4 | ||||
| More specs » | More specs » |
Intel Core i5+8400 vs Intel Core i9-9900K: What is the difference?
54points
Intel Core i5+8400
69points
Intel Core i9-9900K
Comparison winner
vs
66 facts in comparison
Intel Core i5+8400
Intel Core i9-9900K
Why is Intel Core i5+8400 better than Intel Core i9-9900K?
- 30W lower TDP?
65Wvs95W
Why is Intel Core i9-9900K better than Intel Core i5+8400?
- 1.
71x faster CPU speed?
8 x 3.6GHzvs6 x 2.8GHz - 10 more CPU threads?
16vs6 - 1GHz higher turbo clock speed?
5GHzvs4GHz - 0.5MB bigger L2 cache?
2MBvs1.5MB - 1.62x higher PassMark result?
18898vs11685 - 7MB bigger L3 cache?
16MBvs9MB - Has an unlocked multiplier?
- 128KB bigger L1 cache?
512KBvs384KB
Which are the most popular comparisons?
Intel Core i5+8400
vs
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Intel Core i9-9900K
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Intel Core i5+8400
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Intel Core i3-10100
Intel Core i9-9900K
vs
AMD Ryzen 9 3900X
Intel Core i5+8400
vs
Intel Core i5-10400
Intel Core i9-9900K
vs
Intel Core i7-9700K
Intel Core i5+8400
vs
Intel Core i7-6700
Intel Core i9-9900K
vs
Intel Core i5-12600K
Intel Core i5+8400
vs
AMD Ryzen 3 3200G
Intel Core i9-9900K
vs
AMD Ryzen 7 5800X
Intel Core i5+8400
vs
AMD Ryzen 5 5600G
Intel Core i9-9900K
vs
AMD Ryzen 5 3600
Intel Core i5+8400
vs
Intel Core i3-10105
Intel Core i9-9900K
vs
AMD Ryzen 5 5600X
Intel Core i5+8400
vs
AMD Ryzen 5 3600
Intel Core i9-9900K
vs
Intel Core i9-9900
Intel Core i5+8400
vs
AMD Ryzen 5 2600
Intel Core i9-9900K
vs
Intel Core i7-10700K
Intel Core i5+8400
vs
AMD Ryzen 5 5600X
Intel Core i9-9900K
vs
Intel Core i7-8700K
Price comparison
Cheap alternatives
User reviews
Overall Rating
Intel Core i5+8400
3 User reviews
Intel Core i5+8400
8.
3/10
3 User reviews
Intel Core i9-9900K
4 User reviews
Intel Core i9-9900K
8.8/10
4 User reviews
Features
Value for money
9.3/10
3 votes
8.5/10
4 votes
Gaming
7.7/10
3 votes
9.3/10
4 votes
Performance
8.7/10
3 votes
9.5/10
4 votes
Reliability
9.0/10
3 votes
9.0/10
4 votes
Energy efficiency
9.0/10
3 votes
8.8/10
4 votes
Performance
CPU speed
6 x 2.8GHz
8 x 3.6GHz
The CPU speed indicates how many processing cycles per second can be executed by a CPU, considering all of its cores (processing units). It is calculated by adding the clock rates of each core or, in the case of multi-core processors employing different microarchitectures, of each group of cores.
CPU threads
More threads result in faster performance and better multitasking.
turbo clock speed
When the CPU is running below its limitations, it can boost to a higher clock speed in order to give increased performance.
Has an unlocked multiplier
✖Intel Core i5+8400
✔Intel Core i9-9900K
Some processors come with an unlocked multiplier which makes them easy to overclock, allowing you to gain increased performance in games and other apps.
L2 cache
A larger L2 cache results in faster CPU and system-wide performance.
L3 cache
A larger L3 cache results in faster CPU and system-wide performance.
L1 cache
A larger L1 cache results in faster CPU and system-wide performance.
L2 core
0.25MB/core
0.25MB/core
More data can be stored in the L2 cache for access by each core of the CPU.
L3 core
1.
5MB/core
2MB/core
More data can be stored in the L3 cache for access by each core of the CPU.
Benchmarks
PassMark result
This benchmark measures the performance of the CPU using multiple threads.
PassMark result (single)
This benchmark measures the performance of the CPU using a single thread.
Geekbench 5 result (multi)
Unknown. Help us by suggesting a value. (Intel Core i5+8400)
Geekbench 5 is a cross-platform benchmark that measures a processor’s multi-core performance. (Source: Primate Labs, 2023)
Cinebench R20 (multi) result
Unknown. Help us by suggesting a value. (Intel Core i5+8400)
Cinebench R20 is a benchmark tool that measures a CPU’s multi-core performance by rendering a 3D scene.
Cinebench R20 (single) result
Unknown. Help us by suggesting a value.
(Intel Core i5+8400)
Cinebench R20 is a benchmark tool that measures a CPU’s single-core performance by rendering a 3D scene.
Geekbench 5 result (single)
Unknown. Help us by suggesting a value. (Intel Core i5+8400)
Geekbench 5 is a cross-platform benchmark that measures a processor’s single-core performance. (Source: Primate Labs, 2023)
Blender (bmw27) result
Unknown. Help us by suggesting a value. (Intel Core i5+8400)
164.2seconds
The Blender (bmw27) benchmark measures the performance of a processor by rendering a 3D scene. More powerful processors can render the scene in less time.
Blender (classroom) result
Unknown. Help us by suggesting a value. (Intel Core i5+8400)
544seconds
The Blender (classroom) benchmark measures the performance of a processor by rendering a 3D scene. More powerful processors can render the scene in less time.
performance per watt
Unknown. Help us by suggesting a value. (Intel Core i5+8400)
This means the CPU is more efficient, giving a greater amount of performance for each watt of power used.
Integrated graphics
GPU clock speed
350MHz
350MHz
The graphics processing unit (GPU) has a higher clock speed.
GPU turbo
1050MHz
1200MHz
When the GPU is running below its limitations, it can boost to a higher clock speed in order to give increased performance.
GPU execution units
Unknown. Help us by suggesting a value. (Intel Core i5+8400)
Unknown. Help us by suggesting a value. (Intel Core i9-9900K)
A graphics processing unit (GPU) with a greater number of execution units can deliver better graphics.
supported displays
Using multiple displays you can create a larger workspace, making it easier to work across multiple apps.
DirectX version
DirectX is used in games, with newer versions supporting better graphics.
OpenGL version
OpenGL is used in games, with newer versions supporting better graphics.
OpenCL version
Unknown. Help us by suggesting a value. (Intel Core i5+8400)
Unknown. Help us by suggesting a value. (Intel Core i9-9900K)
Some apps use OpenCL to apply the power of the graphics processing unit (GPU) for non-graphical computing. Newer versions introduce more functionality and better performance.
texture mapping units (TMUs)
Unknown. Help us by suggesting a value. (Intel Core i5+8400)
Unknown. Help us by suggesting a value. (Intel Core i9-9900K)
TMUs take textures and map them to the geometry of a 3D scene. More TMUs will typically mean that texture information is processed faster.
render output units (ROPs)
Unknown.
Help us by suggesting a value. (Intel Core i5+8400)
Unknown. Help us by suggesting a value. (Intel Core i9-9900K)
The ROPs are responsible for some of the final steps of the rendering process, writing the final pixel data to memory and carrying out other tasks such as anti-aliasing to improve the look of graphics.
Memory
RAM speed
2666MHz
2666MHz
It can support faster memory, which will give quicker system performance.
maximum memory bandwidth
41.6GB/s
41.6GB/s
This is the maximum rate that data can be read from or stored into memory.
DDR memory version
DDR (Double Data Rate) memory is the most common type of RAM. Newer versions of DDR memory support higher maximum speeds and are more energy-efficient.
memory channels
More memory channels increases the speed of data transfer between the memory and the CPU.
maximum memory amount
The maximum amount of memory (RAM) supported.
bus transfer rate
The bus is responsible for transferring data between different components of a computer or device.
Supports ECC memory
✖Intel Core i5+8400
✖Intel Core i9-9900K
Error-correcting code memory can detect and correct data corruption. It is used when is it essential to avoid corruption, such as scientific computing or when running a server.
eMMC version
Unknown. Help us by suggesting a value. (Intel Core i5+8400)
Unknown. Help us by suggesting a value. (Intel Core i9-9900K)
A higher version of eMMC allows faster memory interfaces, having a positive effect on the performance of a device. For example, when transferring files from your computer to the internal storage over USB.
bus speed
Unknown.
Help us by suggesting a value. (Intel Core i5+8400)
Unknown. Help us by suggesting a value. (Intel Core i9-9900K)
The bus is responsible for transferring data between different components of a computer or device.
Features
uses multithreading
✔Intel Core i5+8400
✔Intel Core i9-9900K
Multithreading technology (such as Intel’s Hyperthreading or AMD’s Simultaneous Multithreading) provides increased performance by splitting each of the processor’s physical cores into virtual cores, also known as threads. This way, each core can run two instruction streams at once.
Has AES
✔Intel Core i5+8400
✔Intel Core i9-9900K
AES is used to speed up encryption and decryption.
Has AVX
✔Intel Core i5+8400
✔Intel Core i9-9900K
AVX is used to help speed up calculations in multimedia, scientific and financial apps, as well as improving Linux RAID software performance.
SSE version
SSE is used to speed up multimedia tasks such as editing an image or adjusting audio volume. Each new version contains new instructions and improvements.
Has F16C
✔Intel Core i5+8400
✔Intel Core i9-9900K
F16C is used to speed up tasks such as adjusting the contrast of an image or adjusting volume.
bits executed at a time
Unknown. Help us by suggesting a value. (Intel Core i5+8400)
Unknown. Help us by suggesting a value. (Intel Core i9-9900K)
NEON provides acceleration for media processing, such as listening to MP3s.
Has MMX
✔Intel Core i5+8400
✔Intel Core i9-9900K
MMX is used to speed up tasks such as adjusting the contrast of an image or adjusting volume.
Has TrustZone
✖Intel Core i5+8400
✖Intel Core i9-9900K
A technology integrated into the processor to secure the device for use with features such as mobile payments and streaming video using digital rights management (DRM).
front-end width
Unknown. Help us by suggesting a value. (Intel Core i5+8400)
Unknown. Help us by suggesting a value. (Intel Core i9-9900K)
The CPU can decode more instructions per clock (IPC), meaning that the CPU performs better
Price comparison
Which are the best CPUs?
Intel Core i9 9900K vs i5 8400:
performance comparison
VS
Intel Core i9 9900K
Intel Core i5 8400
Which is better: 8-core Intel Core i9 9900K at 3.6 GHz or i5 8400 with 6 cores at 2.8 GHz? To find out, read our comparison test of these 14nm desktop processors in popular benchmarks, games and heavy applications.
- Overview
- Differences
- Performance
- Features
- Comments
Overview
Overview and comparison of the main metrics from NanoReview
Single -flow performance
Rating in tests using one nucleus
Core i9 9900k
60
Core i5 8400
48
Multi -flow performance
Tests in benchmarks where all nucleus
9 9,000 9,000 9,000 9,000 9,000 9,000 9,000 9,000
Core I9 9900K
45
Core i5 8400
23
Energy Equality
Energy Effect Consum CHIP
Core I9 9900K
47
Core
Core i9 9900K
51
Core i5 8400
38
Key differences
What are the main differences between 8400 and 9900K
Reasons to choose Intel Core i9 9900K
- Unlocked multiplier
- Has 7MB more L3 cache
- Launched 1 year and 1 month later than rival
- Has 2% more physical cores
- Turbo Boost frequency (5GHz vs 4GHz)
- 24% faster in single core Geekbench v5 — 1277 and 1034 points
Benchmark tests
Compare the results of processor tests in benchmarks
nine0003
Cinebench R23 (single core)
Core i9 9900K
+30%
1333
Core i5 8400
1026
Cinebench R23 (multi-core)
Core i9 9900K
+112%
12389
Core i5 8400
5842
Passmark CPU (single core)
Core i9 9900K
+23%
2921
Core i5 8400
2382
Passmark CPU (multi-core)
Core i9 9900K
+100%
18471
Core i5 8400
9220
Geekbench 5 (single core)
Core i9 9900K
+23%
1268
Core i5 8400
1027
Geekbench 5 (multi-core)
Core i9 9900K
+83%
8447
Core i5 8400
4607
Add your Cinebench R23 results
Specifications
List of full specifications of Intel Core i99900K and i5 8400
General information
| Manufacturer | Intel | Intel |
| Release date | October 8, 2018 | October 5, 2017 |
| Type | Desktop | Desktop |
| Instruction set architecture | x86-64 | |
| Codename | Coffee Lake | Coffee Lake |
| Model number | i9-9900K | i5-8400 |
| Integrated graphics | UHD Graphics 630 | UHD Graphics 630 |
Processor
| Core | 8 | 6 |
| threads | 16 | 6 |
| Frequency | 3. 6 GHz |
2.8 GHz |
| Max. frequency in Turbo Boost | 5 GHz | 4 GHz |
| Number of cores | 8 | 6 |
| Number of threads | 16 | 6 |
| Bus frequency | 100 MHz | 100 MHz |
| Multiplier | 36x | 28x |
| Tire speed | 8 GT/s | 8 GT/s |
| Level 1 cache | 64KB (per core) | |
| Level 2 cache | 256KB (per core) | 256KB (per core) |
| Level 3 cache | 16MB (shared) | 9MB (shared) |
| Unlocked multiplier | Yes | No |
| Process | 14 nanometers | |
| Socket | LGA-1151 | LGA-1151 |
| Power consumption (TDP) | 95W | 65 W |
| Critical temperature | 100°C | 100°C |
| Integrated graphics | Intel UHD Graphics 630 | Intel UHD Graphics 630 |
| GPU frequency | 350 MHz | 350 MHz |
| Boost GPU frequency | 1200 MHz | 1050 MHz |
| Shader blocks | 192 | 192 |
| TMUs | 24 | 24 |
| ROPs | 3 | |
| Computer units | 24 | 24 |
| TGP | 15W | 15W |
Max. resolution |
4096×2304 — 60Hz | 4096×2304 — 60Hz |
iGPU FLOPS
Core i9 9900K
0.38 teraflops
Core i5 8400
0.38 teraflops
Memory support
| Memory type | DDR4-2666 | DDR4-2666 |
| Max. size | 128 GB | 128 GB |
| Number of channels | 2 | 2 |
| Max. bandwidth | 41.6 GB/s | 41.6 GB/s |
| ECC support | No | No |
Other
| Official site | Site Intel Core i9 9900K | Site Intel Core i5 8400 |
| PCI Express Version | 3.0 | 3.0 |
| Max. PCI Express lanes | 16 | |
| Extended instructions | SSE4.
|