Core i5-9400F vs Core i7-7700K

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 i5-9400F vs Core i7-7700K 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 i5-9400F vs Core i7-7700K: Pros, Cons & Final Verdict

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

Core i5-9400F

2019

Why buy it

✅Costs $123 less on MSRP ($182 MSRP vs $305 MSRP).
✅Delivers 64.7% more PassMark for each dollar spent, at 52.0 vs 31.6 PassMark/$ ($182 MSRP vs $305 MSRP).
✅Draws 65W instead of 100W, a 35W reduction.
✅100+% more PCIe lanes (16 vs 0) for storage and expansion-heavy builds.

Trade-offs

❌Worse for gaming: lower average FPS than Core i7-7700K across 50 shared CPU benchmark tests.
❌Lower PassMark (9,462 vs 9,625).

Core i7-7700K

2017

Why buy it

✅Better for gaming: +28.9% higher average FPS across 50 shared CPU benchmark tests.

Trade-offs

❌Lower PassMark per dollar, at 31.6 vs 52.0 PassMark/$ ($305 MSRP vs $182 MSRP).
❌53.8% higher power demand at 100W vs 65W.

Quick Answers

So, is Core i7-7700K better than Core i5-9400F?

Yes. Core i7-7700K is the better all-around CPU here. It gives you a 28.9% average FPS lead across 50 shared CPU game tests in our data and 1.7% better PassMark, which is enough to make it the stronger overall pick.

Which one is better for gaming?

If gaming is the priority, Core i7-7700K is the better pick. According to our tests, it delivers 28.9% more average FPS across 50 shared CPU game tests.

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

For streaming, content creation, and heavier multitasking, Core i7-7700K is the stronger fit. You are getting 1.7% better PassMark, backed by 4 cores and 8 threads.

Which one is the smarter buy today, not just the cheaper CPU?

Core i7-7700K is still the faster CPU overall, but Core i5-9400F is easier to justify if budget matters more than peak performance. Core i7-7700K comes in 67.6% more expensive on MSRP at $305 MSRP versus $182 MSRP, and it still gives you a 28.9% average FPS lead across 50 shared CPU game tests in our data. Core i5-9400F is also 64.7% better value on MSRP (52.0 vs 31.6 PassMark/$), which is why it can still make sense for tighter-budget builds on paper.

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

Core i5-9400F makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2019 vs 2017). That makes it the safer long-term bet.

Core i5-9400F vs Core i7-7700K Technical Specifications

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

Core i5-9400F

The Core i5-9400F is manufactured by Intel. It was released in 8 January 2019 (6 years ago). It is based on the Coffee Lake-R (2018−2019) architecture. It features 6 cores and 6 threads. Base frequency is 2.9 GHz, with boost up to 4.1 GHz. L3 cache: 9 MB (total). L2 cache: 256K (per core). Built on 14 nm process technology. Socket: LGA1151. Thermal design power (TDP): 65 Watt. Memory support: DDR4-2666. Passmark benchmark score: 9,462 points. Launch price was $182.

Core i7-7700K

The Core i7-7700K is manufactured by Intel. It was released in 3 January 2017 (8 years ago). It is based on the Kaby Lake (2016−2019) architecture. It features 4 cores and 8 threads. Base frequency is 4.2 GHz, with boost up to 4.5 GHz. L3 cache: 8 MB (total). L2 cache: 256K (per core). Built on 14 nm process technology. Socket: LGA1151. Thermal design power (TDP): 91 Watt. Memory support: DDR3, DDR4. Passmark benchmark score: 9,625 points. Launch price was $339.

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Processing Power

The Core i5-9400F packs 6 cores / 6 threads, while the Core i7-7700K offers 4 cores / 8 threads — the Core i5-9400F has 2 more cores. Boost clocks reach 4.1 GHz on the Core i5-9400F versus 4.5 GHz on the Core i7-7700K — a 9.3% clock advantage for the Core i7-7700K (base: 2.9 GHz vs 4.2 GHz). The Core i5-9400F uses the Coffee Lake-R (2018−2019) architecture (14 nm), while the Core i7-7700K uses Kaby Lake (2016−2019) (14 nm). In PassMark, the Core i5-9400F scores 9,462 against the Core i7-7700K's 9,625 — a 1.7% lead for the Core i7-7700K. L3 cache: 9 MB (total) on the Core i5-9400F vs 8 MB (total) on the Core i7-7700K.

Feature	Core i5-9400F	Core i7-7700K
Cores / Threads	6 / 6+50%	4 / 8
Boost Clock	4.1 GHz	4.5 GHz+10%
Base Clock	2.9 GHz	4.2 GHz+45%
L3 Cache	9 MB (total)+13%	8 MB (total)
L2 Cache	256K (per core)	256K (per core)
Process	14 nm	14 nm
Architecture	Coffee Lake-R (2018−2019)	Kaby Lake (2016−2019)
PassMark	9,462	9,625+2%

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Memory & Platform

Both processors use the LGA1151 socket with PCIe 3.0.

Feature	Core i5-9400F	Core i7-7700K
Socket	LGA1151	LGA1151
PCIe Generation	PCIe 3.0	PCIe 3.0
Max RAM Speed	DDR4-2666	—
Max RAM Capacity	128 GB	—
RAM Channels	2	—
ECC Support	No	—
PCIe Lanes	16	—

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Advanced Features

Virtualization: VT-x, VT-d (Core i5-9400F) / not specified (Core i7-7700K). Primary use case: Core i5-9400F targets Desktop.

Feature	Core i5-9400F	Core i7-7700K
Integrated GPU	No	—
Unlocked	No	—
AVX-512	No	—
Virtualization	VT-x, VT-d	—
Target Use	Desktop	—

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Value Analysis

At launch, the Core i5-9400F was priced at $182, while the Core i7-7700K came in at $305. On launch pricing ($182 vs $305), Core i5-9400F was $123 cheaper. In terms of value on MSRP (PassMark points per dollar), the Core i5-9400F delivers 52.0 pts/$ vs 31.6 pts/$ for the Core i7-7700K — making the Core i5-9400F the 48.9% better value option.

Feature	Core i5-9400F	Core i7-7700K
MSRP	$182-40%	$305
Performance per Dollar	52.0+65%	31.6
Release Date	2019	2017

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