Intel Core i9-9900K vs Intel Core i9-9820X

Compare Intel 9th Generation Core i9 8 core CPU vs Intel Core X-series 10 core processor, specs and benchmark score. Which is the better CPU for gaming?

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Benchmark Score

Overall Score

A combined score of all workloads

6719 points
6987 points
3% slightly better overall score

Gaming Score

The raw gaming performance with a fast GPU

8223 points
7% slightly better gaming score
7678 points

Multitasking Score

Performance in workloads using up to 8 cores

6214 points
6735 points
8% slightly better multitasking score

Heavy Workload Score

Performance in workloads using up to 16 cores

6073 points
6649 points
9% slightly better heavy workload score

Free CPU Benchmark

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Other Benchmarks

Blender score

Blender score

Cycles Render (Samples per minute)

175.64 points
204.52 points
16% slightly higher Blender score

Specifications

Cores

Number of physical processing units

8
10
25% slightly more cores

Threads

Number of logical processing units

16
20
25% slightly more threads

Clock Speed

Base frequency at which the chip operates

3.6 GHz
9% slightly higher clock speed
3.3 GHz

Turbo Speed

Higher frequency used for heavy workloads

5 GHz
21% slightly higher turbo speed
4.1 GHz

TDP

Thermal Design Power: Measure of heat generated by the CPU

95 W
73% significantly lower TDP
165 W

PCIe Lanes

Number of physical connections between the CPU and expansion slots

16
44
175% significantly more pcie lanes

Memory Channels

Lanes for simultaneous memory access

2
4
100% significantly more memory channels

Supported Memory

Maximum amount of RAM supported by this CPU

128 GiB
Identical
128 GiB

L1 Cache

Smallest embedded memory, but the fastest

512 KiB
640 KiB
25% slightly more L1 cache

L3 Cache

General memory pool for all cores

16 MiB
220% significantly more L3 cache
5 MiB

Other details

Rank

Ranking in the hardwareDB database

209th of 1,089
195th of 1,089

Family

The product line

9th Generation Core i9
Core X-series

Release date

The official date of release of this chip

2018 November
2018 November

Memory Type

The type of memory used by this chip

DDR4-2666
DDR4-2666

Is Unlocked

Can this CPU can be overclocked

Yes
Yes

Supports ECC memory

Does this CPU support error correcting memory

No
No

Core i9-9900K vs Core i9-9820X specs and performance

According to the hardwareDB Benchmark tool, the Core i9-9900K is faster than the Core i9-9820X. Furthermore, our gaming benchmark shows that it also outperforms the Core i9-9820X in all gaming tests too.

When comparing core counts for these CPUs, we notice that the Core i9-9820X has slightly more cores with 10 cores compared to the Core i9-9900K that has 8 cores. It also has more threads than the Core i9-9900K. These CPUs have different clock speeds. Indeed, the Core i9-9900K has a slightly higher clock speed compared to the Core i9-9820X. Also, the Core i9-9900K has a slightly higher turbo speed. A Core i9-9900K CPU outputs less heat than a Core i9-9820X CPU because of its significantly lower TDP. This measures the amount of heat they output and can be used to estimate power consumption.

The more cores a CPU has, the better the overall performance will be in parallel workloads such as multitasking. Many CPUs have more threads than cores, this means that each physical core is split into multiple logical cores, making them more efficient. Indeed, the Core i9-9900K has more threads than cores. Each physical core is split into multiple threads.

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