Core i7-9700K vs Core i9-10940X

Intel

Core i7-9700K

8 Cores8 Thrd95 WWMax: 4.9 GHz2018

Popular choices:

VS
Intel

Core i9-10940X

14 Cores28 Thrd165 WWMax: 4.8 GHz2019

Popular choices:

Performance Spectrum - CPU

About PassMark

PassMark CPU Mark evaluates processor speed through complex mathematical computations. It provides a reliable metric to compare multi-core performance, where higher scores indicate faster processing for multitasking, gaming, and heavy workloads.

Head-to-Head Verdict, Benchmarks, Value & Long-Term Outlook

This comparison brings together gaming FPS, productivity performance, platform differences, power efficiency, pricing context, and upgrade path so you can see which CPU actually makes more sense.

Core i7-9700K

2018

Why buy it

  • Costs $399 less on MSRP ($385 MSRP vs $784 MSRP).
  • Draws 95W instead of 165W, a 70W reduction.
  • Integrated graphics onboard with UHD Graphics 630, while Core i9-10940X needs a discrete GPU.

Trade-offs

  • Worse for gaming: lower average FPS than Core i9-10940X across 5 shared CPU benchmark tests.
  • Lower PassMark (14,397 vs 27,684).
  • Smaller total L3 cache (12 MB vs 19 MB).

Core i9-10940X

2019

Why buy it

  • Better for gaming: +56.5% higher average FPS across 5 shared CPU benchmark tests.
  • +60.4% larger total L3 cache (19 MB vs 12 MB).
  • 200% more PCIe lanes (48 vs 16) for storage and expansion-heavy builds.

Trade-offs

  • 103.6% HIGHER MSRP
    $784 MSRPvs$385 MSRP
  • 73.7% higher power demand at 165W vs 95W.
  • No integrated graphics, while Core i7-9700K can still boot and troubleshoot without a discrete GPU.

Quick Answers

So, is Core i9-10940X better than Core i7-9700K?
Yes. Core i9-10940X is the better overall CPU here. You are getting a 56.5% average FPS lead across 5 shared CPU game tests in our data, 92.3% better PassMark, and the stronger long-term platform, which makes it the stronger all-around choice.
Which one is better for gaming?
If gaming is the priority, Core i9-10940X is the better pick here. According to our tests, it delivers 56.5% more average FPS across 5 shared CPU game tests.
Which one is better for streaming, content creation, and heavy multitasking?
For streaming, content creation, and heavier multitasking, Core i9-10940X is the better fit. You are getting 92.3% better PassMark, backed by 14 cores and 28 threads. It also carries the larger cache pool with 60.4% larger total L3 cache (19 MB vs 12 MB).
Which one is the smarter buy today, not just the cheaper CPU?
Core i9-10940X is the smarter buy by a wide margin for a fresh build. Core i9-10940X is 103.6% more expensive on MSRP at $784 MSRP versus $385 MSRP, and it gives you a 56.5% average FPS lead across 5 shared CPU game tests in our data. Core i7-9700K only looks stronger on raw value math because it is extremely cheap, but that is mostly used-market pricing on an obsolete 2018 platform. Even with 5.9% better value on paper (37.4 vs 35.3 PassMark/$), it really only makes sense as a very cheap stopgap or a niche existing-platform option for someone already on LGA1151.
Which one is more future-proof for 2026 and beyond?
Core i9-10940X is the more future-proof choice for 2026 and beyond. You are getting a newer CPU generation (2019 vs 2018), 60.4% larger total L3 cache (19 MB vs 12 MB), and more multi-core headroom with 14 cores / 28 threads instead of 8/8. That extra compute headroom should age better as games, background tasks, and creator workloads get heavier.

Games Benchmarks

Paired with RTX 4090

To accurately isolate CPU performance, all benchmarks below use an NVIDIA RTX 4090 as the reference GPU. This eliminates GPU-side bottlenecks and highlights pure processing throughput differences between the CPUs.

Note: Real-world results may vary based on your actual GPU. CPU performance impact is more visible in processing-intensive titles and high-refresh-rate gaming scenarios.

Path of Exile 2

Path of Exile 2

PresetCore i7-9700KCore i9-10940X
1080p
low308 FPS279 FPS
medium278 FPS249 FPS
high231 FPS206 FPS
ultra182 FPS174 FPS
1440p
low270 FPS233 FPS
medium221 FPS189 FPS
high178 FPS154 FPS
ultra143 FPS134 FPS
4K
low170 FPS164 FPS
medium140 FPS134 FPS
high108 FPS105 FPS
ultra95 FPS90 FPS
Counter-Strike 2

Counter-Strike 2

PresetCore i7-9700KCore i9-10940X
1080p
low360 FPS550 FPS
medium321 FPS457 FPS
high291 FPS379 FPS
ultra259 FPS342 FPS
1440p
low324 FPS456 FPS
medium282 FPS394 FPS
high258 FPS332 FPS
ultra225 FPS287 FPS
4K
low249 FPS283 FPS
medium221 FPS246 FPS
high208 FPS226 FPS
ultra179 FPS197 FPS
League of Legends

League of Legends

PresetCore i7-9700KCore i9-10940X
1080p
low360 FPS692 FPS
medium360 FPS692 FPS
high360 FPS692 FPS
ultra360 FPS692 FPS
1440p
low360 FPS692 FPS
medium360 FPS692 FPS
high360 FPS692 FPS
ultra360 FPS656 FPS
4K
low360 FPS595 FPS
medium360 FPS500 FPS
high360 FPS444 FPS
ultra318 FPS373 FPS
Valorant

Valorant

PresetCore i7-9700KCore i9-10940X
1080p
low360 FPS692 FPS
medium360 FPS692 FPS
high360 FPS692 FPS
ultra360 FPS692 FPS
1440p
low360 FPS692 FPS
medium360 FPS692 FPS
high360 FPS639 FPS
ultra360 FPS560 FPS
4K
low360 FPS580 FPS
medium360 FPS516 FPS
high360 FPS464 FPS
ultra360 FPS408 FPS

Technical Specifications

Side-by-side comparison of Core i7-9700K and Core i9-10940X

Intel

Core i7-9700K

The Core i7-9700K is manufactured by Intel. It was released in 19 October 2018 (7 years ago). It is based on the Coffee Lake-R (2018−2019) architecture. It features 8 cores and 8 threads. Base frequency is 3.6 GHz, with boost up to 4.9 GHz. L3 cache: 12 MB (total). L2 cache: 256K (per core). Built on 14 nm process technology. Socket: LGA1151. Thermal design power (TDP): 95 Watt. Memory support: DDR4. Passmark benchmark score: 14,397 points. Launch price was $374.

Intel

Core i9-10940X

The Core i9-10940X is manufactured by Intel. It was released in 19 October 2019 (6 years ago). It is based on the Cascade Lake-X (2019) architecture. It features 14 cores and 28 threads. Base frequency is 3.3 GHz, with boost up to 4.8 GHz. L3 cache: 19.25 MB (total). L2 cache: 1 MB (per core). Built on 14 nm process technology. Socket: LGA2066. Thermal design power (TDP): 165 Watt. Memory support: DDR4-2933. Passmark benchmark score: 27,684 points. Launch price was $299.

Processing Power

The Core i7-9700K packs 8 cores / 8 threads, while the Core i9-10940X offers 14 cores / 28 threads — the Core i9-10940X has 6 more cores. Boost clocks reach 4.9 GHz on the Core i7-9700K versus 4.8 GHz on the Core i9-10940X — a 2.1% clock advantage for the Core i7-9700K (base: 3.6 GHz vs 3.3 GHz). The Core i7-9700K uses the Coffee Lake-R (2018−2019) architecture (14 nm), while the Core i9-10940X uses Cascade Lake-X (2019) (14 nm). In PassMark, the Core i7-9700K scores 14,397 against the Core i9-10940X's 27,684 — a 63.1% lead for the Core i9-10940X. L3 cache: 12 MB (total) on the Core i7-9700K vs 19.25 MB (total) on the Core i9-10940X.

FeatureCore i7-9700KCore i9-10940X
Cores / Threads
8 / 8
14 / 28+75%
Boost Clock
4.9 GHz+2%
4.8 GHz
Base Clock
3.6 GHz+9%
3.3 GHz
L3 Cache
12 MB (total)
19.25 MB (total)+60%
L2 Cache
256K (per core)
1 MB (per core)+300%
Process
14 nm
14 nm
Architecture
Coffee Lake-R (2018−2019)
Cascade Lake-X (2019)
PassMark
14,397
27,684+92%
Cinebench R23 Multi
19,000
Geekbench 6 Single
1,450
Geekbench 6 Multi
11,000
🧠

Memory & Platform

The Core i7-9700K uses the LGA1151 socket (PCIe 3.0), while the Core i9-10940X uses LGA2066 (PCIe 3.0) — making them incompatible on the same motherboard. Both support up to DDR4-2666 memory speed. The Core i9-10940X supports up to 256 GB of RAM compared to 128 GB 66.7% more capacity for professional workloads. Memory channels: 2 (Core i7-9700K) vs 4 (Core i9-10940X). PCIe lanes: 16 (Core i7-9700K) vs 48 (Core i9-10940X) — the Core i9-10940X offers 32 more lanes for additional GPUs or NVMe drives. Chipset compatibility: Intel 300 series (Core i7-9700K) and X299 (Core i9-10940X).

FeatureCore i7-9700KCore i9-10940X
Socket
LGA1151
LGA2066
PCIe Generation
PCIe 3.0
PCIe 3.0
Max RAM Speed
DDR4-2666
DDR4-2933
Max RAM Capacity
128 GB
256 GB+100%
RAM Channels
2
4+100%
ECC Support
No
No
PCIe Lanes
16
48+200%
🔧

Advanced Features

Both processors feature an unlocked multiplier for overclocking. Only the Core i9-10940X supports AVX-512 instructions — important for machine learning and scientific applications. Both support VT-x, VT-d virtualization. The Core i7-9700K includes integrated graphics (UHD Graphics 630), while the Core i9-10940X requires a dedicated GPU. Primary use case: Core i7-9700K targets Desktop, Core i9-10940X targets High-End Desktop.

FeatureCore i7-9700KCore i9-10940X
Integrated GPU
Yes
No
IGPU Model
UHD Graphics 630
None
Unlocked
Yes
Yes
AVX-512
No
Yes
Virtualization
VT-x, VT-d
VT-x, VT-d
Target Use
Desktop
High-End Desktop
💰

Value Analysis

The Core i7-9700K launched at $385 MSRP, while the Core i9-10940X debuted at $784. On MSRP ($385 vs $784), the Core i7-9700K is $399 cheaper. In terms of value on MSRP (PassMark points per dollar), the Core i7-9700K delivers 37.4 pts/$ vs 35.3 pts/$ for the Core i9-10940X — making the Core i7-9700K the 5.7% better value option.

FeatureCore i7-9700KCore i9-10940X
MSRP
$385-51%
$784
Performance per Dollar
37.4+6%
35.3
Release Date
2018
2019