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.

Core i7-9700K vs Core i9-9940X FPS Benchmarks

Predicted gaming performance across popular games. Tested paired with GeForce RTX 5090 to isolate CPU performance.

Search any supported game below to compare 1080p FPS for both components.

Core i7-9700K vs Core i9-9940X: Pros, Cons & Final Verdict

See where each CPU makes more sense in practice: gaming, heavier work, platform cost, power draw, and upgrade path.

Core i7-9700K

2018

Why buy it

✅Better for gaming: +6.6% higher average FPS across 50 shared CPU benchmark tests.
✅Costs $1,002 less on MSRP ($385 MSRP vs $1,387 MSRP).
✅Delivers 84.7% more PassMark for each dollar spent, at 37.4 vs 20.3 PassMark/$ ($385 MSRP vs $1,387 MSRP).
✅Draws 95W instead of 165W, a 70W reduction.
✅Integrated graphics onboard with UHD Graphics 630, while Core i9-9940X needs a discrete GPU.

Trade-offs

❌Lower PassMark (14,397 vs 28,088).
❌Smaller total L3 cache (12 MB vs 19 MB).

Core i9-9940X

2018

Why buy it

✅+95.1% higher PassMark.
✅+60.4% larger total L3 cache (19 MB vs 12 MB).
✅175% more PCIe lanes (44 vs 16) for storage and expansion-heavy builds.

Trade-offs

❌Worse for gaming: lower average FPS than Core i7-9700K across 50 shared CPU benchmark tests.
❌Lower PassMark per dollar, at 20.3 vs 37.4 PassMark/$ ($1,387 MSRP vs $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 i9-9940X better than Core i7-9700K?

It depends on what you want from the system. For gaming, Core i7-9700K is ahead with a 6.6% average FPS lead across 50 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, Core i9-9940X pulls ahead with 95.1% better PassMark. Core i9-9940X also has the bigger cache pool with 60.4% larger total L3 cache (19 MB vs 12 MB).

Which one is better for streaming, content creation, and heavy multitasking?

For streaming, content creation, and heavier multitasking, Core i9-9940X is the stronger fit. You are getting 95.1% better PassMark, backed by 14 cores and 28 threads. It also has 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 i9-9940X is still the much better call for a fresh build. Core i9-9940X comes in 260.3% more expensive on MSRP at $1,387 MSRP versus $385 MSRP, and it still gives you 95.1% better PassMark. Core i7-9700K only looks stronger on raw value math because it is extremely cheap, but that usually means used-market pricing on an obsolete 2018 platform. Even with 84.7% better value on paper (37.4 vs 20.3 PassMark/$), it really only makes sense as a cheap stopgap or a niche existing-platform option for someone already on LGA1151.

Which one is more future-proof for 2026 and beyond?

Core i9-9940X makes more sense long term for 2026 and beyond. You are getting 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 is more likely to matter as games, background tasks, and creator workloads get heavier.

Core i7-9700K vs Core i9-9940X Technical Specifications

Side-by-side specs, architecture details, clocks, memory, power, and platform differences.

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.

Core i9-9940X

The Core i9-9940X is manufactured by Intel. It was released in 19 October 2018 (7 years ago). It is based on the Skylake (server) (2017−2018) architecture. It features 14 cores and 28 threads. Base frequency is 3.3 GHz, with boost up to 4.5 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: DDR4-2666. Passmark benchmark score: 28,088 points. Launch price was $1,387.

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Processing Power

The Core i7-9700K packs 8 cores / 8 threads, while the Core i9-9940X offers 14 cores / 28 threads — the Core i9-9940X has 6 more cores. Boost clocks reach 4.9 GHz on the Core i7-9700K versus 4.5 GHz on the Core i9-9940X — a 8.5% 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 i9-9940X uses Skylake (server) (2017−2018) (14 nm). In PassMark, the Core i7-9700K scores 14,397 against the Core i9-9940X's 28,088 — a 64.5% lead for the Core i9-9940X. L3 cache: 12 MB (total) on the Core i7-9700K vs 19.25 MB (total) on the Core i9-9940X.

Feature	Core i7-9700K	Core i9-9940X
Cores / Threads	8 / 8	14 / 28+75%
Boost Clock	4.9 GHz+9%	4.5 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)+25500%	1 MB (per core)
Process	14 nm	14 nm
Architecture	Coffee Lake-R (2018−2019)	Skylake (server) (2017−2018)
PassMark	14,397	28,088+95%

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Memory & Platform

The Core i7-9700K uses the LGA1151 socket (PCIe 3.0), while the Core i9-9940X uses LGA2066 (PCIe 3.0) — making them incompatible on the same motherboard. Both support up to DDR4-2666 memory speed. Both support up to 128 GB of RAM. Memory channels: 2 (Core i7-9700K) vs 4 (Core i9-9940X). PCIe lanes: 16 (Core i7-9700K) vs 44 (Core i9-9940X) — the Core i9-9940X offers 28 more lanes for additional GPUs or NVMe drives.

Feature	Core i7-9700K	Core i9-9940X
Socket	LGA1151	LGA2066
PCIe Generation	PCIe 3.0	PCIe 3.0
Max RAM Speed	DDR4-2666	DDR4-2666
Max RAM Capacity	128 GB	128 GB
RAM Channels	2	4+100%
ECC Support	No	No
PCIe Lanes	16	44+175%

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Advanced Features

Both processors feature an unlocked multiplier for overclocking. Only the Core i9-9940X 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 i9-9940X requires a dedicated GPU. Primary use case: Core i7-9700K targets Desktop, Core i9-9940X targets Workstation.

Feature	Core i7-9700K	Core i9-9940X
Integrated GPU	Yes	No
IGPU Model	UHD Graphics 630	—
Unlocked	Yes	Yes
AVX-512	No	Yes
Virtualization	VT-x, VT-d	VT-x, VT-d
Target Use	Desktop	Workstation

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Value Analysis

At launch, the Core i7-9700K was priced at $385, while the Core i9-9940X came in at $1387. On launch pricing ($385 vs $1387), Core i7-9700K was $1002 cheaper. In terms of value on MSRP (PassMark points per dollar), the Core i7-9700K delivers 37.4 pts/$ vs 20.3 pts/$ for the Core i9-9940X — making the Core i7-9700K the 59.5% better value option.

Feature	Core i7-9700K	Core i9-9940X
MSRP	$385-72%	$1387
Performance per Dollar	37.4+84%	20.3
Release Date	2018	2018

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