Intel Core i9-9900KF vs Intel Core i9-7940X

Compare Intel 9th Generation Core i9 8 core CPU vs Intel Core X-series 14 core processor, specs and benchmark score. Which is the better CPU for gaming?

CPU Comparison

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Price

The cheapest price from our partner retailers

$ 399.00
$ 300.00
$ 99.00 significantly less expensive

Benchmark Score

Overall Score

A combined score of all workloads

6827 points
30% slightly better overall score
5222 points

Gaming Score

The raw gaming performance with a fast GPU

8465 points
37% slightly better gaming score
6170 points

Multitasking Score

Performance in workloads using up to 8 cores

6279 points
27% slightly better multitasking score
4938 points

Heavy Workload Score

Performance in workloads using up to 16 cores

6130 points
25% slightly better heavy workload score
4896 points

Free CPU Benchmark

Want to compare your processor against the Core i9-9900KF and the Core i9-7940X? Download our free and quick PC Performance Test.

Other Benchmarks

Blender score

Blender score

Cycles Render (Samples per minute)

176.47 points
261.54 points
48% significantly higher Blender score
Geekbench 5 (multi) score

Geekbench 5 (multi) score

Multi threaded benchmark

8008 points
9233 points
15% slightly higher Geekbench 5 (multi) score
Geekbench 5 (single) score

Geekbench 5 (single) score

Single threaded benchmark

1647 points
26% slightly higher Geekbench 5 (single) score
1299 points
Geekbench 6 (multi) score

Geekbench 6 (multi) score

Multi threaded benchmark

8172 points
10511 points
28% slightly higher Geekbench 6 (multi) score
Geekbench 6 (single) score

Geekbench 6 (single) score

Single threaded benchmark

1723 points
19% slightly higher Geekbench 6 (single) score
1444 points

Specifications

Cores

Number of physical processing units

8
14
75% significantly more cores

Threads

Number of logical processing units

16
28
75% significantly more threads

Clock Speed

Base frequency at which the chip operates

3.6 GHz
16% slightly higher clock speed
3.1 GHz

Turbo Speed

Higher frequency used for heavy workloads

5 GHz
16% slightly higher turbo speed
4.3 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
896 KiB
75% significantly more L1 cache

L3 Cache

General memory pool for all cores

16 MiB
25 MiB
56% significantly more L3 cache

Other details

Rank

Ranking in the hardwareDB database

204th of 1,089
323rd of 1,089

Family

The product line

9th Generation Core i9
Core X-series

Release date

The official date of release of this chip

2019 February
2017 August

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 i9-9900KF vs Core i9-7940X benchmarks

According to the hardwareDB Benchmark tool, the Core i9-9900KF is faster than the Core i9-7940X. Furthermore, our gaming benchmark shows that it also outperforms the Core i9-7940X in all gaming tests too.

When comparing core counts for these CPUs, we notice that the Core i9-7940X has significantly more cores with 14 cores compared to the Core i9-9900KF that has 8 cores. It also has more threads than the Core i9-9900KF. With our hardware info, we find that the Core i9-9900KF has a slightly higher clock speed than the Core i9-7940X. Also, the Core i9-9900KF has a slightly higher turbo speed. A Core i9-9900KF CPU outputs less heat than a Core i9-7940X CPU because of its significantly lower TDP. This measures the amount of heat they output and can be used to estimate power consumption.

Most CPUs have more threads than cores. This technology, colloquially called hyperthreading, improves performance by splitting a core into multiple virtual ones. This provides more efficient utilisation of a core. Indeed, the Core i9-9900KF has more threads than cores. Each physical core is split into multiple threads.

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