Core i7-9700K vs Pentium Gold 6405U

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 Pentium Gold 6405U 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 Pentium Gold 6405U: 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: +619.1% higher average FPS across 46 shared CPU benchmark tests.
✅+500% larger total L3 cache (12 MB vs 2 MB).
✅100+% more PCIe lanes (16 vs 0) for storage and expansion-heavy builds.
✅Integrated graphics onboard with UHD Graphics 630, while Pentium Gold 6405U needs a discrete GPU.

Trade-offs

❌Launch MSRP is still $385 MSRP, while Pentium Gold 6405U mostly shows up through inconsistent older-market listings.
❌9400% higher power demand at 95W vs 1W.

Pentium Gold 6405U

2019

Why buy it

✅Draws 1W instead of 95W, a 94W reduction.

Trade-offs

❌Worse for gaming: lower average FPS than Core i7-9700K across 46 shared CPU benchmark tests.
❌Lower PassMark (1,320 vs 14,397).
❌Smaller total L3 cache (2 MB vs 12 MB).
❌No integrated graphics, while Core i7-9700K can still boot and troubleshoot without a discrete GPU.

Quick Answers

So, is Core i7-9700K better than Pentium Gold 6405U?

Yes. Core i7-9700K is the better all-around CPU here. It gives you a 619.1% average FPS lead across 46 shared CPU game tests in our data and 990.7% better PassMark, which is enough to make it the stronger overall pick.

Which one is better for gaming?

If gaming is the priority, Core i7-9700K is the better pick. According to our tests, it delivers 619.1% more average FPS across 46 shared CPU game tests.

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

For streaming, content creation, and heavier multitasking, Core i7-9700K is the stronger fit. You are getting 990.7% better PassMark, backed by 8 cores and 8 threads. It also has the larger cache pool with 500% larger total L3 cache (12 MB vs 2 MB).

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

Core i7-9700K is the better buy right now. Core i7-9700K comes in at an unclear MSRP at $385 MSRP versus unclear MSRP, and it still gives you a 619.1% average FPS lead across 46 shared CPU game tests in our data. It is also 100.0% better value on MSRP (37.4 vs 0.0 PassMark/$), so you are getting the faster CPU without taking a value hit on paper.

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

Pentium Gold 6405U makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2019 vs 2018). That makes it the safer long-term bet.

Core i7-9700K vs Pentium Gold 6405U 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.

Pentium Gold 6405U

The Pentium Gold 6405U is manufactured by Intel. It was released in 31 October 2019 (6 years ago). It is based on the Comet Lake-U (2019−2020) architecture. It features 2 cores and 4 threads. Base frequency is 2.4 GHz, with boost up to 2.4 GHz. L3 cache: 2 MB. L2 cache: 1 MB. Built on 14 nm process technology. Socket: FCBGA1528. Thermal design power (TDP): 15 Watt. Memory support: DDR4. Passmark benchmark score: 1,320 points. Launch price was $161.

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Processing Power

The Core i7-9700K packs 8 cores / 8 threads, while the Pentium Gold 6405U offers 2 cores / 4 threads — the Core i7-9700K has 6 more cores. Boost clocks reach 4.9 GHz on the Core i7-9700K versus 2.4 GHz on the Pentium Gold 6405U — a 68.5% clock advantage for the Core i7-9700K (base: 3.6 GHz vs 2.4 GHz). The Core i7-9700K uses the Coffee Lake-R (2018−2019) architecture (14 nm), while the Pentium Gold 6405U uses Comet Lake-U (2019−2020) (14 nm). In PassMark, the Core i7-9700K scores 14,397 against the Pentium Gold 6405U's 1,320 — a 166.4% lead for the Core i7-9700K. L3 cache: 12 MB (total) on the Core i7-9700K vs 2 MB on the Pentium Gold 6405U.

Feature	Core i7-9700K	Pentium Gold 6405U
Cores / Threads	8 / 8+300%	2 / 4
Boost Clock	4.9 GHz+104%	2.4 GHz
Base Clock	3.6 GHz+50%	2.4 GHz
L3 Cache	12 MB (total)+500%	2 MB
L2 Cache	256K (per core)+25500%	1 MB
Process	14 nm	14 nm
Architecture	Coffee Lake-R (2018−2019)	Comet Lake-U (2019−2020)
PassMark	14,397+991%	1,320

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Memory & Platform

The Core i7-9700K uses the LGA1151 socket (PCIe 3.0), while the Pentium Gold 6405U uses FCBGA1528 (PCIe 3.0) — making them incompatible on the same motherboard.

Feature	Core i7-9700K	Pentium Gold 6405U
Socket	LGA1151	FCBGA1528
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 i7-9700K) / not specified (Pentium Gold 6405U). The Core i7-9700K includes integrated graphics (UHD Graphics 630), while the Pentium Gold 6405U requires a dedicated GPU. Primary use case: Core i7-9700K targets Desktop.