Core i7-9700K vs Ryzen 5 8640U

Core i7-9700K vs Ryzen 5 8640U Performance Spectrum

Core i7-9700K

8 / 8

14,397

0.0%

20,274

+40.8%

Ryzen Threadripper 3960X

Ryzen Threadripper PRO 5975WX

Ryzen Threadripper 9960X

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.

Core i7-9700K vs Ryzen 5 8640U 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 Ryzen 5 8640U: 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

Trade-offs

❌Lower PassMark (14,397 vs 20,274).
❌Smaller total L3 cache (12 MB vs 16 MB).
❌Launch MSRP is still $385 MSRP, while Ryzen 5 8640U mostly shows up through inconsistent older-market listings.
❌239.3% higher power demand at 95W vs 28W.
❌Older platform position on LGA1151 with DDR4, while Ryzen 5 8640U moves to FP8 and DDR5.

Ryzen 5 8640U

2023

Why buy it

✅+40.8% higher PassMark.
✅+33.3% larger total L3 cache (16 MB vs 12 MB).
✅Draws 28W instead of 95W, a 67W reduction.
✅Newer platform on FP8 with DDR5 support instead of LGA1151 and DDR4.
✅25% more PCIe lanes (20 vs 16) for storage and expansion-heavy builds.

Trade-offs

❌Fewer obvious downsides in this matchup outside of normal market pricing swings.

Quick Answers

So, is Ryzen 5 8640U better than Core i7-9700K?

Yes. Ryzen 5 8640U is the better all-around CPU here. It gives you a 2.9% average FPS lead across 50 shared CPU game tests in our data, 40.8% better PassMark, and the stronger long-term platform, which is enough to make it the stronger overall pick.

Which one is better for gaming?

For gaming, this matchup is basically a tie in the data we have.

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

For streaming, content creation, and heavier multitasking, Ryzen 5 8640U is the stronger fit. You are getting 40.8% better PassMark, backed by 6 cores and 12 threads. It also has the larger cache pool with 33.3% larger total L3 cache (16 MB vs 12 MB).

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

Ryzen 5 8640U is still the much better call for a fresh build. Ryzen 5 8640U comes in at an unclear MSRP at unclear MSRP versus $385 MSRP, and it still gives you a 2.9% average FPS lead across 50 shared CPU game tests in our data. Core i7-9700K only looks stronger on raw value math because it is extremely cheap, but that usually means used-market pricing on an obsolete 2018 platform. Even with 100.0% better value on paper (37.4 vs 0.0 PassMark/$), 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?

Ryzen 5 8640U makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2023 vs 2018), a healthier platform with FP8 and DDR5 instead of LGA1151, 33.3% larger total L3 cache (16 MB vs 12 MB), and more multi-core headroom with 6 cores / 12 threads instead of 8/8. That gives you a healthier platform runway for motherboard, RAM, and later CPU upgrades.

Core i7-9700K vs Ryzen 5 8640U 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.

Ryzen 5 8640U

The Ryzen 5 8640U is manufactured by AMD. It was released in 6 December 2023 (1 year ago). It is based on the Hawk Point-U (Zen 4) (2023−2025) architecture. It features 6 cores and 12 threads. Base frequency is 3.5 GHz, with boost up to 4.9 GHz. L3 cache: 16 MB (total). L2 cache: 1 MB (per core). Built on 4 nm process technology. Socket: FP8. Thermal design power (TDP): 28 Watt. Memory support: DDR5. Passmark benchmark score: 20,274 points. Launch price was $299.

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Processing Power

The Core i7-9700K packs 8 cores / 8 threads, while the Ryzen 5 8640U offers 6 cores / 12 threads — the Core i7-9700K has 2 more cores. Boost clocks reach 4.9 GHz on the Core i7-9700K versus 4.9 GHz on the Ryzen 5 8640U — identical boost frequencies (base: 3.6 GHz vs 3.5 GHz). The Core i7-9700K uses the Coffee Lake-R (2018−2019) architecture (14 nm), while the Ryzen 5 8640U uses Hawk Point-U (Zen 4) (2023−2025) (4 nm). In PassMark, the Core i7-9700K scores 14,397 against the Ryzen 5 8640U's 20,274 — a 33.9% lead for the Ryzen 5 8640U. L3 cache: 12 MB (total) on the Core i7-9700K vs 16 MB (total) on the Ryzen 5 8640U.

Feature	Core i7-9700K	Ryzen 5 8640U
Cores / Threads	8 / 8+33%	6 / 12
Boost Clock	4.9 GHz	4.9 GHz
Base Clock	3.6 GHz+3%	3.5 GHz
L3 Cache	12 MB (total)	16 MB (total)+33%
L2 Cache	256K (per core)+25500%	1 MB (per core)
Process	14 nm	4 nm-71%
Architecture	Coffee Lake-R (2018−2019)	Hawk Point-U (Zen 4) (2023−2025)
PassMark	14,397	20,274+41%
Cinebench R23 Multi	—	10,675
Geekbench 6 Single	—	2,519
Geekbench 6 Multi	—	10,308

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Memory & Platform

The Core i7-9700K uses the LGA1151 socket (PCIe 3.0), while the Ryzen 5 8640U uses FP8 (PCIe 4.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR4-2666 on the Core i7-9700K versus LPDDR5x-7500 on the Ryzen 5 8640U — the Ryzen 5 8640U supports 181.3% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Ryzen 5 8640U supports up to 256 GB of RAM compared to 128 GB — 100% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 16 (Core i7-9700K) vs 20 (Ryzen 5 8640U) — the Ryzen 5 8640U offers 4 more lanes for additional GPUs or NVMe drives. Chipset compatibility: Intel 300 series (Core i7-9700K) and SoC (Ryzen 5 8640U).

Feature	Core i7-9700K	Ryzen 5 8640U
Socket	LGA1151	FP8
PCIe Generation	PCIe 3.0	PCIe 4.0+33%
Max RAM Speed	DDR4-2666	LPDDR5x-7500+181%
Max RAM Capacity	128 GB	256 GB+100%
RAM Channels	2	2
ECC Support	No	Yes
PCIe Lanes	16	20+25%

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Advanced Features

Only the Core i7-9700K has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Only the Ryzen 5 8640U supports AVX-512 instructions — important for machine learning and scientific applications. Virtualization support: VT-x, VT-d (Core i7-9700K) vs AMD-V (SVM) (Ryzen 5 8640U). Both include integrated graphics — UHD Graphics 630 (Core i7-9700K) and Radeon 760M (Ryzen 5 8640U) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Primary use case: Core i7-9700K targets Desktop, Ryzen 5 8640U targets Productivity. Direct competitor: Ryzen 5 8640U rivals Core i5-1335U.